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Ye L, He X, Shi Y, Xiao Z, Wang W, Cheng L, Fan X, Zhang B, Ou X. Strengthening the interfacial stability of single-crystal LiNi 0.88Co 0.09Mn 0.03O 2 cathode with multiple-function surface modification. J Colloid Interface Sci 2024; 672:486-496. [PMID: 38852351 DOI: 10.1016/j.jcis.2024.06.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 06/03/2024] [Accepted: 06/04/2024] [Indexed: 06/11/2024]
Abstract
The instability in the structural integrity caused by interfacial issues is commonly regarded as the primary drawback of Ni-rich layered cathode materials (LiNixCoyMn1-x-yO2, where x ≥ 0.8), which must be addressed before their commercial application. Herein, a novel multiple-function surface modification strategy is proposed based on the single crystal structure to in-situ achieve the construction of a coating layer and surface doping with Ce element to enhance the structural stability of the LiNi0.88Co0.09Mn0.03O2 (NCM). Notably, the introduction of Ce-O bonding adjusts the local oxygen coordination to achieve a more stabilized structure of the oxygen framework, which inhibits the evolution of lattice oxygen and enhances conductivity. Additionally, by benefiting from the in-situ synthesized coating layer of LixCeO2, the occurrence of side reactions on the surface is effectively alleviated, resulting in a reduction in electrode polarization. Combined with comprehensive electrochemical tests, it is confirmed that the improved electrochemical performance originates from the reduction of the detrimental H2-H3 phase transition and enhanced conductivity. As expected, the modified material with 1 wt% content of Ce (NCM@Ce) exhibits a high initial discharge capacity of 196.3 mAh g-1 with a capacity retention of 79.7 % after 200 cycles, and its energy density reaches 574.3 Wh kg-1 after 200 cycles.
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Affiliation(s)
- Long Ye
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Xinyou He
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Yao Shi
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Zhiming Xiao
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Wei Wang
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Lei Cheng
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, School of Metallurgy and Environment, Central South University, Changsha 410083, China; Zhejiang Power New Energy Co. Ltd., Zhuji 311899, China.
| | - Xinming Fan
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, School of Metallurgy and Environment, Central South University, Changsha 410083, China; National & Regional Joint Engineering Research Center of Nonferrous Metal Resource Recycling, Changsha, 410083, China.
| | - Bao Zhang
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, School of Metallurgy and Environment, Central South University, Changsha 410083, China; Zhejiang Power New Energy Co. Ltd., Zhuji 311899, China
| | - Xing Ou
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, School of Metallurgy and Environment, Central South University, Changsha 410083, China.
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2
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Hou Z, Liu Y, Yao S, Wang S, Ji Y, Fu W, Xie J, Yan YM, Yang Z. Inducing weak and negative Jahn-Teller distortions to alleviate structural deformations for stable sodium storage. MATERIALS HORIZONS 2024. [PMID: 39224063 DOI: 10.1039/d4mh01006j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
In the quest for efficient supercapacitor materials, manganese-based layered oxide cathodes stand out for their cost-effectiveness and high theoretical capacity. However, their progress is hindered by the Jahn-Teller (J-T) distortion due to the unavoidable Mn4+ to Mn3+ reduction during ion storage processes. Our study addresses this challenge by stabilizing the K0.5MnO2 cathode through strategic Mg2+ substitution. This substitution leads to an altered Mn3+ electronic configuration, effectively mitigating the strong J-T distortion during ion storage processes. We provide a comprehensive analysis combining experimental evidence and theoretical insights, highlighting the emergence of the weak and negative J-T effects with reduced structural deformation during electrochemical cycling. Our findings reveal that the K0.5Mn0.85Mg0.15O2 cathode exhibits remarkable durability, retaining 96.0% of initial capacitance after 8000 cycles. This improvement is attributed to the specific electronic configurations of Mn3+ ions, which play a crucial role in minimizing volumetric changes and counteracting structural deformation typically induced by the strong J-T distortion. Our study not only advances the understanding of managing J-T distortion in manganese-based cathodes but also opens new avenues for designing high-stability supercapacitors and other energy storage devices by tailoring electrode materials based on their electronic configurations.
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Affiliation(s)
- Zishan Hou
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
| | - Yuanming Liu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
| | - Shuyun Yao
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
| | - Shiyu Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
| | - Yingjie Ji
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
| | - Weijie Fu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
| | - Jiangzhou Xie
- School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Yi-Ming Yan
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
| | - Zhiyu Yang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
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3
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Cui Z, Liu C, Manthiram A. Enabling Stable Operation of Lithium-Ion Batteries under Fast-Operating Conditions by Tuning the Electrolyte Chemistry. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2409272. [PMID: 39148170 DOI: 10.1002/adma.202409272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Revised: 07/27/2024] [Indexed: 08/17/2024]
Abstract
Inferior fast-charging and low-temperature performances remain a hurdle for lithium-ion batteries. Overcoming this hurdle is extremely challenging primarily due to the low conductivity of commercial ethylene carbonate (EC)-based electrolytes and the formation of undesirable solid electrolyte interphases with poor Li+-ion diffusion kinetics. Here, a series of EC-free fast-charging electrolytes (FCEs) by incorporating a fluorinated ester, methyl trifluoroacetate (MTFA), as a special cosolvent into a practically viable LiPF6-dimethyl carbonate-fluoroethylene carbonate system, is reported. With a solvent-dominated solvation structure, MTFA facilitates the formation of thin, yet robust, interphases on both the cathode and anode. Commercial 1 Ah graphite|LiNi0.8Mn0.1Co0.1O2 pouch cells filled with the FCE exhibit ≈80% capacity retention over 3000 cycles at 3 C and 4 C (15 min) charging rates in the full range of 0-100% state-of-charge. Moreover, even at a low operating temperature of -20 °C, the 1 Ah cell retains a high capacity of 0.65 Ah at a 2 C discharge rate and displays virtually no capacity fade on cycling at a C/5 rate. The work highlights the power of electrolyte design in achieving extra-fast-charging and low-temperature performances.
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Affiliation(s)
- Zehao Cui
- Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Chen Liu
- Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Arumugam Manthiram
- Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
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4
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Eum D, Park SO, Jang HY, Jeon Y, Song JH, Han S, Kim K, Kang K. Electrochemomechanical failure in layered oxide cathodes caused by rotational stacking faults. NATURE MATERIALS 2024; 23:1093-1099. [PMID: 38702413 DOI: 10.1038/s41563-024-01899-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 04/12/2024] [Indexed: 05/06/2024]
Abstract
Electrochemomechanical degradation is one of the most common causes of capacity deterioration in high-energy-density cathodes, particularly intercalation-based layered oxides. Here we reveal the presence of rotational stacking faults (RSFs) in layered lithium transition-metal oxides, arising from specific stacking sequences at different angles, and demonstrate their critical role in determining structural/electrochemical stability. Our combined experiments and calculations show that RSFs facilitate oxygen dimerization and transition-metal migration in layered oxides, fostering microcrack nucleation/propagation concurrently with cumulative electrochemomechanical degradation on cycling. We further show that thermal defect annihilation as a potential solution can suppress RSFs, reducing microcracks and enhancing cyclability in lithium-rich layered cathodes. The common but previously overlooked occurrence of RSFs suggests a new synthesis guideline of high-energy-density layered oxide cathodes.
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Affiliation(s)
- Donggun Eum
- Department of Materials Science and Engineering, Institute for Rechargeable Battery Innovations, Research Institute of Advanced Materials, Seoul National University, Seoul, Republic of Korea
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul National University, Seoul, Republic of Korea
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | - Sung-O Park
- Department of Materials Science and Engineering, Institute for Rechargeable Battery Innovations, Research Institute of Advanced Materials, Seoul National University, Seoul, Republic of Korea
| | - Ho-Young Jang
- Department of Materials Science and Engineering, Institute for Rechargeable Battery Innovations, Research Institute of Advanced Materials, Seoul National University, Seoul, Republic of Korea
| | - Youngjun Jeon
- Department of Materials Science and Engineering, Institute for Rechargeable Battery Innovations, Research Institute of Advanced Materials, Seoul National University, Seoul, Republic of Korea
| | - Jun-Hyuk Song
- Department of Materials Science and Engineering, Institute for Rechargeable Battery Innovations, Research Institute of Advanced Materials, Seoul National University, Seoul, Republic of Korea
| | - Sangwook Han
- Department of Materials Science and Engineering, Institute for Rechargeable Battery Innovations, Research Institute of Advanced Materials, Seoul National University, Seoul, Republic of Korea
| | - Kyoungoh Kim
- Department of Materials Science and Engineering, Institute for Rechargeable Battery Innovations, Research Institute of Advanced Materials, Seoul National University, Seoul, Republic of Korea
| | - Kisuk Kang
- Department of Materials Science and Engineering, Institute for Rechargeable Battery Innovations, Research Institute of Advanced Materials, Seoul National University, Seoul, Republic of Korea.
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul National University, Seoul, Republic of Korea.
- Institute of Engineering Research, College of Engineering, Seoul National University, Seoul, Republic of Korea.
- School of Chemical and Biological Engineering, College of Engineering, Seoul National University, Seoul, Republic of Korea.
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5
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Fan M, Meng XH, Guo H, Xin S, Chang X, Jiang KC, Chen JC, Meng Q, Guo YG. Reviving Fatigue Surface for Solid-State Upcycling of Highly Degraded Polycrystalline LiNi 1-x-yCo xMn yO 2 Cathodes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2405238. [PMID: 38923661 DOI: 10.1002/adma.202405238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 06/13/2024] [Indexed: 06/28/2024]
Abstract
The ongoing tide of spent lithium-ion batteries (LIBs) urgently calls for high-value output in efficient recycling. Recently, direct regeneration has emerged as a novel recycling strategy but fails to repair the irreversible morphology and structure damage of the highly degraded polycrystalline layered oxide materials. Here, this work carries out a solid-state upcycling study for the severely cracked LiNi1-x-yCoxMnyO2 cathodes. The specific single-crystallization process during calcination is investigated and the surface rock salt phase is recognized as the intrinsic obstacle to the crystal growth of the degraded cathodes due to sluggish diffusion in the heterogeneous grain boundary. Accordingly, this work revives the fatigue rock salt phase by restoring a layered surface and successfully reshapes severely broken cathodes into the high-performance single-crystalline particles. Benefiting from morphological and structural integrity, the upcycled single-crystalline cathode materials exhibit an enhanced capacity retention rate of 93.5% after 150 cycles at 1C compared with 61.7% of the regenerated polycrystalline materials. The performance is also beyond that of the commercial cathodes even under a high cut-off voltage (4.5 V) or high operating temperature (45 °C). This work provides scientific insights for the upcycling of the highly degraded cathodes in spent LIBs.
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Affiliation(s)
- Min Fan
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Xin-Hai Meng
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Hua Guo
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Sen Xin
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xin Chang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Ke-Cheng Jiang
- Jiangsu Zenergy Battery Technologies Co., Ltd, Suzhou, 215558, P. R. China
| | - Ji-Cheng Chen
- Jiangsu Zenergy Battery Technologies Co., Ltd, Suzhou, 215558, P. R. China
| | - Qinghai Meng
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yu-Guo Guo
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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6
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Hua W, Chen J, Ferreira Sanchez D, Schwarz B, Yang Y, Senyshyn A, Wu Z, Shen CH, Knapp M, Ehrenberg H, Indris S, Guo X, Ouyang X. Probing Particle-Carbon/Binder Degradation Behavior in Fatigued Layered Cathode Materials through Machine Learning Aided Diffraction Tomography. Angew Chem Int Ed Engl 2024; 63:e202403189. [PMID: 38701048 DOI: 10.1002/anie.202403189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 05/03/2024] [Accepted: 05/03/2024] [Indexed: 05/05/2024]
Abstract
Understanding how reaction heterogeneity impacts cathode materials during Li-ion battery (LIB) electrochemical cycling is pivotal for unraveling their electrochemical performance. Yet, experimentally verifying these reactions has proven to be a challenge. To address this, we employed scanning μ-XRD computed tomography to scrutinize Ni-rich layered LiNi0.6Co0.2Mn0.2O2 (NCM622) and Li-rich layered Li[Li0.2Ni0.2Mn0.6]O2 (LLNMO). By harnessing machine learning (ML) techniques, we scrutinized an extensive dataset of μ-XRD patterns, about 100,000 patterns per slice, to unveil the spatial distribution of crystalline structure and microstrain. Our experimental findings unequivocally reveal the distinct behavior of these materials. NCM622 exhibits structural degradation and lattice strain intricately linked to the size of secondary particles. Smaller particles and the surface of larger particles in contact with the carbon/binder matrix experience intensified structural fatigue after long-term cycling. Conversely, both the surface and bulk of LLNMO particles endure severe strain-induced structural degradation during high-voltage cycling, resulting in significant voltage decay and capacity fade. This work holds the potential to fine-tune the microstructure of advanced layered materials and manipulate composite electrode construction in order to enhance the performance of LIBs and beyond.
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Affiliation(s)
- Weibo Hua
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, Shaanxi, 710049, China
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, 610065, Chengdu, China
- Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344, Eggenstein-Leopoldshafen, Germany
| | - Jinniu Chen
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, Shaanxi, 710049, China
| | - Dario Ferreira Sanchez
- Swiss Light Source, Paul Scherrer Institut (PSI), Forschungsstrasse 111, Villigen, 5232, Switzerland
| | - Björn Schwarz
- Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344, Eggenstein-Leopoldshafen, Germany
| | - Yang Yang
- National Synchrotron Light Source II (NSLS-II), Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Anatoliy Senyshyn
- Heinz Maier-Leibnitz Zentrum, Technische Universität München, Lichtenbergstrasse 1, D-85747, Garching, Germany
| | - Zhenguo Wu
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, 610065, Chengdu, China
| | | | - Michael Knapp
- Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344, Eggenstein-Leopoldshafen, Germany
| | - Helmut Ehrenberg
- Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344, Eggenstein-Leopoldshafen, Germany
| | - Sylvio Indris
- Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344, Eggenstein-Leopoldshafen, Germany
| | - Xiaodong Guo
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, 610065, Chengdu, China
| | - Xiaoping Ouyang
- School of Materials Science and Engineering, Xiangtan University, Xiangtan, 411105, China
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7
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Wang C, Jing Y, Zhu D, Xin HL. Atomic Origin of Chemomechanical Failure of Layered Cathodes in All-Solid-State Batteries. J Am Chem Soc 2024; 146:17712-17718. [PMID: 38874441 DOI: 10.1021/jacs.4c02198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
The ever-increasing demand for safety has thrust all-solid-state batteries (ASSBs) into the forefront of next-generation energy storage technologies. However, the atomic mechanisms underlying the failure of layered cathodes in ASSBs, as opposed to their counterparts in liquid electrolyte-based lithium-ion batteries (LIBs), have remained elusive. Here, leveraging artificial intelligence-enhanced super-resolution electron microscopy, we unravel the atomic origins dictating the chemomechanical degradation of technologically crucial high-Ni layered oxide cathodes in ASSBs. We reveal that the coupling of surface frustration and interlayer-shear-induced phase transformation exacerbates the chemomechanical breakdown of layered cathodes. Surface frustration, a phenomenon previously unobserved in liquid electrolyte-based LIBs, emerges through electrochemical processes involving surface nanocrystallization coupled with rock salt transformation. Simultaneously, delithiation-induced interlayer shear yields the formation of chunky O1 phases and intricate interfaces/transition motifs, distinct from scenarios observed in liquid electrolyte-based LIBs. Bridging the knowledge gap between the failure mechanisms of layered cathodes in solid-state electrolytes and conventional liquid electrolytes, our study provides unprecedented atomic-scale insights into the degradation pathways of layered cathodes in ASSBs.
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Affiliation(s)
- Chunyang Wang
- Department of Physics and Astronomy, University of California Irvine, Irvine, California 92697, United States
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Yaqi Jing
- Department of Physics and Astronomy, University of California Irvine, Irvine, California 92697, United States
| | - Dong Zhu
- Department of Physics and Astronomy, University of California Irvine, Irvine, California 92697, United States
| | - Huolin L Xin
- Department of Physics and Astronomy, University of California Irvine, Irvine, California 92697, United States
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8
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Liang L, Su M, Sun Z, Wang L, Hou L, Liu H, Zhang Q, Yuan C. High-entropy doping promising ultrahigh-Ni Co-free single-crystalline cathode toward commercializable high-energy lithium-ion batteries. SCIENCE ADVANCES 2024; 10:eado4472. [PMID: 38905349 PMCID: PMC11192087 DOI: 10.1126/sciadv.ado4472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 05/16/2024] [Indexed: 06/23/2024]
Abstract
The development of advanced layered Ni-rich cathodes is essential for high-energy lithium-ion batteries (LIBs). However, the prevalent Ni-rich cathodes are still plagued by inherent issues of chemomechanical and thermal instabilities and limited cycle life. For this, here, we introduce an efficient approach combining single-crystalline (SC) design with in situ high-entropy (HE) doping to engineer an ultrahigh-Ni cobalt-free layered cathode of LiNi0.88Mn0.03Mg0.02Fe0.02Ti0.02Mo0.02Nb0.01O2 (denoted as HE-SC-N88). Thanks to the SC- and HE-doping merits, HE-SC-N88 is featured with a grain-boundary-free and stabilized structure with minimal lattice strain, preventing mechanical degradation, reducing surface parasitic reactions, and mitigating oxygen loss. Accordingly, our HE-SC-N88 cathode demonstrates exceptional electrochemical properties particularly with prolonged cycling stability under strenuous conditions in both half and full cells, and the delayed O loss-induced phase transitions upon heating. More meaningfully, our design of HE doping in redefining the ultrahigh-Ni Co-free SC cathodes will make a tremendous progress toward industrial application of next-generation LIBs.
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Affiliation(s)
- Longwei Liang
- School of Material Science and Engineering, University of Jinan, Jinan 250022, People’s Republic of China
| | - Maoshui Su
- School of Material Science and Engineering, University of Jinan, Jinan 250022, People’s Republic of China
| | - Zhefei Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Materials, Xiamen University, Xiamen, Fujian 361005, China
| | - Lixian Wang
- School of Material Science and Engineering, University of Jinan, Jinan 250022, People’s Republic of China
| | - Linrui Hou
- School of Material Science and Engineering, University of Jinan, Jinan 250022, People’s Republic of China
| | - Haodong Liu
- Center for Memory and Recording Research Building, UC San Diego, La Jolla, CA 92093, USA
| | - Qiaobao Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Materials, Xiamen University, Xiamen, Fujian 361005, China
| | - Changzhou Yuan
- School of Material Science and Engineering, University of Jinan, Jinan 250022, People’s Republic of China
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9
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Meng XH, Xiao D, Zhou ZY, Liu WZ, Shi JL, Wan LJ, Guo YG. Self-Limiting Phase Transition Enabling Reversible Overstoichiometric Li Storage in Ni-Rich Cathodes. J Am Chem Soc 2024; 146:14889-14897. [PMID: 38747066 DOI: 10.1021/jacs.4c04756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
Ni-rich cathodes are some of the most promising candidates for advanced lithium-ion batteries, but their available capacities have been stagnant due to the intrinsic Li+ storage sites. Extending the voltage window down can induce the phase transition from O3 to 1T of LiNiO2-derived cathodes to accommodate excess Li+ and dramatically increase the capacity. By setting the discharge cutoff voltage of LiNi0.6Co0.2Mn0.2O2 to 1.4 V, we can reach an extremely high capacity of 393 mAh g-1 and an energy density of 1070 Wh kg-1 here. However, the phase transition causes fast capacity decay and related structural evolution is rarely understood, hindering the utilization of this feature. We find that the overlithiated phase transition is self-limiting, which will transform into solid-solution reaction with cycling and make the cathode degradation slow down. This is attributed to the migration of abundant transition metal ions into lithium layers induced by the overlithiation, allowing the intercalation of overstoichiometric Li+ into the crystal without the O3 framework change. Based on this, the wide-potential cycling stability is further improved via a facile charge-discharge protocol. This work provides deep insight into the overstoichiometric Li+ storage behaviors in conventional layered cathodes and opens a new avenue toward high-energy batteries.
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Affiliation(s)
- Xin-Hai Meng
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Dongdong Xiao
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Zi-Yi Zhou
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Wen-Zhe Liu
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Ji-Lei Shi
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Li-Jun Wan
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yu-Guo Guo
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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10
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Huang W, Liu T, Yu L, Wang J, Zhou T, Liu J, Li T, Amine R, Xiao X, Ge M, Ma L, Ehrlich SN, Holt MV, Wen J, Amine K. Unrecoverable lattice rotation governs structural degradation of single-crystalline cathodes. Science 2024; 384:912-919. [PMID: 38781394 DOI: 10.1126/science.ado1675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 04/16/2024] [Indexed: 05/25/2024]
Abstract
Transitioning from polycrystalline to single-crystalline nickel-rich cathodes has garnered considerable attention in both academia and industry, driven by advantages of high tap density and enhanced mechanical properties. However, cathodes with high nickel content (>70%) suffer from substantial capacity degradation, which poses a challenge to their commercial viability. Leveraging multiscale spatial resolution diffraction and imaging techniques, we observe that lattice rotations occur universally in single-crystalline cathodes and play a pivotal role in the structure degradation. These lattice rotations prove unrecoverable and govern the accumulation of adverse lattice distortions over repeated cycles, contributing to structural and mechanical degradation and fast capacity fade. These findings bridge the previous knowledge gap that exists in the mechanistic link between fast performance failure and atomic-scale structure degradation.
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Affiliation(s)
- Weiyuan Huang
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Tongchao Liu
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Lei Yu
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Jing Wang
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Tao Zhou
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Junxiang Liu
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Tianyi Li
- X-ray Science Division, Advanced Photon Sources, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Rachid Amine
- Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Xianghui Xiao
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Mingyuan Ge
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Lu Ma
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Steven N Ehrlich
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Martin V Holt
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Jianguo Wen
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Khalil Amine
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA
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11
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Hou Y, Song D, Zhang P, Zhang B, Dai D, Tan H. Stabilization of NCM811 cathode interface through macromolecular compound protective film formed by 2,5-bis(2,2,2-trifluoroethoxy)-benzoic acid additive in lithium metal batteries. RSC Adv 2024; 14:15804-15811. [PMID: 38752163 PMCID: PMC11095362 DOI: 10.1039/d4ra00737a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 04/06/2024] [Indexed: 05/18/2024] Open
Abstract
Lithium metal batteries (LMBs) offer substantial promise for next-generation energy storage owing to lithium metal's low reduction potential (-3.045 V vs. the standard hydrogen electrode) and its high specific capacity of 3860 mA h g-1. Among various cathode materials in LMBs, LiNi0.8Co0.1Mn0.1O2 (NCM811) is extensively employed because of its notably high specific capacity (over 200 mA h g-1) and comparatively lower cost. However, structural stress, nickel ions migration, and uneven Li+ deposition in NCM811 particles lead to cracking, irreversible decomposition of active substances, and the growth of mossy Li dendrites, causing severe capacity decline and low Coulomb efficiency in LMBs. In this study, we introduce an effective ethoxyl additive, 2,5-bis(2,2,2-trifluoroethoxy)-benzoic acid (2,5BTBA), directly into the carbonate electrolyte. This additive forms a dense and conductive macromolecular protective film on the NCM811 cathode and lithium metal anode during initial cycles, preventing electrode contact with the electrolyte. Consequently, it safeguards the cathode's structural integrity and enables dense lithium deposition. Adding 3 wt% 2,5BTBA, the Li/NCM811 battery retains a high capacity of 150.60 mA h g-1 and 89.41% retention after 700 cycles at 0.5C, maintaining an average Coulomb efficiency of 99.13%. This study presents an efficient and straightforward strategy to enhance the capacity retention of LMBs.
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Affiliation(s)
- Yixin Hou
- Center for Composite Materials, Harbin Institute of Technology Harbin 150001 China
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology Harbin 150080 China
| | - Daiheng Song
- Center for Composite Materials, Harbin Institute of Technology Harbin 150001 China
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology Harbin 150080 China
| | - Peiyao Zhang
- Center for Composite Materials, Harbin Institute of Technology Harbin 150001 China
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology Harbin 150080 China
| | - Bowen Zhang
- Center for Composite Materials, Harbin Institute of Technology Harbin 150001 China
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology Harbin 150080 China
| | - Ding Dai
- Key Laboratory of Forest Plant Ecology, Ministry of Education, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University Harbin 150001 P. R. China
| | - Huifeng Tan
- Center for Composite Materials, Harbin Institute of Technology Harbin 150001 China
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology Harbin 150080 China
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12
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Lu J, Xu C, Dose W, Dey S, Wang X, Wu Y, Li D, Ci L. Microstructures of layered Ni-rich cathodes for lithium-ion batteries. Chem Soc Rev 2024; 53:4707-4740. [PMID: 38536022 DOI: 10.1039/d3cs00741c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Millions of electric vehicles (EVs) on the road are powered by lithium-ion batteries (LIBs) based on nickel-rich layered oxide (NRLO) cathodes, and they suffer from a limited driving range and safety concerns. Increasing the Ni content is a key way to boost the energy densities of LIBs and alleviate the EV range anxiety, which are, however, compromised by the rapid performance fading. One unique challenge lies in the worsening of the microstructural stability with a rising Ni-content in the cathode. In this review, we focus on the latest advances in the understanding of NLRO microstructures, particularly the microstructural degradation mechanisms, state-of-the-art stabilization strategies, and advanced characterization methods. We first elaborate on the fundamental mechanisms underlying the microstructural failures of NRLOs, including anisotropic lattice evolution, microcracking, and surface degradation, as a result of which other degradation processes, such as electrolyte decomposition and transition metal dissolution, can be severely aggravated. Afterwards, we discuss representative stabilization strategies, including the surface treatment and construction of radial concentration gradients in polycrystalline secondary particles, the fabrication of rod-shaped primary particles, and the development of single-crystal NRLO cathodes. We then introduce emerging microstructural characterization techniques, especially for identification of the particle orientation, dynamic changes, and elemental distributions in NRLO microstructures. Finally, we provide perspectives on the remaining challenges and opportunities for the development of stable NRLO cathodes for the zero-carbon future.
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Affiliation(s)
- Jingyu Lu
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
| | - Chao Xu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Wesley Dose
- School of Chemistry, University of New South Wales, Sydney 2052, Australia
| | - Sunita Dey
- School of Natural and Computing Sciences, University of Aberdeen, Aberdeen AB24 3FX, UK
| | - Xihao Wang
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
| | - Yehui Wu
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
| | - Deping Li
- State Key Laboratory of Advanced Welding and Joining, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
| | - Lijie Ci
- State Key Laboratory of Advanced Welding and Joining, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
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13
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Zhao L, Liu X, Li H, Zhang X, Li J, Quan W, Wang S, Tang Z, Diao X, Wang R, Zhang J. Niobium Oxide Anode with Lattice Structure Self-Optimization for High-Power and Nearly Zero-Degeneration Battery Operation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2308305. [PMID: 38059736 DOI: 10.1002/smll.202308305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/05/2023] [Indexed: 12/08/2023]
Abstract
Li+ insertion-induced structure transformation in crystalline electrodes vitally influence the energy density and cycle life of secondary lithium-ion battery. However, the influence mechanism of structure transformation-induced Li+ migration on the electrochemical performance of micro-crystal materials is still unclear and the strategy to profit from such structure transformation remains exploited. Here, an interesting self-optimization of structure evolution during electrochemical cycling in Nb2O5 micro-crystal with rich domain boundaries is demonstrated, which greatly improves the charge transfer property and mechanical strength. The lattice rearrangement activates the Li+ diffusion kinetics and hinders the particle crack, thus enabling a nearly zero-degeneration operation after 8000 cycles. Full cell paired with lithium cobalt oxides displays an exceptionally high capacity of 176 mA h g-1 at 8000 mA g-1 and excellent long-term durability at 6000 mA g-1 with 63% capacity retention over 2000 cycles. Interestingly, a unique fingerprint based on the intensity ratio of two X-ray diffraction peaks is successfully extracted as a measure of Nb2O5 electrochemical performance. The structure self-optimization for fast charge transfer and high mechanical strength exemplifies a new battery electrode design concept and opens up a vast space of strategy to develop high-performance lithium-ion batteries with high energy density and ultra-long cycle life.
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Affiliation(s)
- Lijiang Zhao
- School of Physics, Beihang University, Beijing, 100191, China
- School of Energy and Power Engineering, Beihang University, Beijing, 100191, China
| | - Xinghua Liu
- School of Physics, Beihang University, Beijing, 100191, China
| | - Hao Li
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, State Key Laboratory for Advanced Metals and Materials, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
| | - Xiaofang Zhang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, State Key Laboratory for Advanced Metals and Materials, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
| | - Jinsong Li
- School of Physics, Beihang University, Beijing, 100191, China
| | - Wei Quan
- China Automotive Battery Research Institute Co., Ltd, Beijing, 101407, China
- General Research Institute for Nonferrous Metals, Beijing, 100088, China
| | - Shitong Wang
- State Key Laboratoty of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - Zilong Tang
- State Key Laboratoty of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - Xungang Diao
- School of Energy and Power Engineering, Beihang University, Beijing, 100191, China
| | - Rongming Wang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, State Key Laboratory for Advanced Metals and Materials, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
| | - Junying Zhang
- School of Physics, Beihang University, Beijing, 100191, China
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14
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Zhang YH, Zhang S, Hu N, Liu Y, Ma J, Han P, Hu Z, Wang X, Cui G. Oxygen vacancy chemistry in oxide cathodes. Chem Soc Rev 2024; 53:3302-3326. [PMID: 38354058 DOI: 10.1039/d3cs00872j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Secondary batteries are a core technology for clean energy storage and conversion systems, to reduce environmental pollution and alleviate the energy crisis. Oxide cathodes play a vital role in revolutionizing battery technology due to their high capacity and voltage for oxide-based batteries. However, oxygen vacancies (OVs) are an essential type of defect that exist predominantly in both the bulk and surface regions of transition metal (TM) oxide batteries, and have a crucial impact on battery performance. This paper reviews previous studies from the past few decades that have investigated the intrinsic and anionic redox-mediated OVs in the field of secondary batteries. We focus on discussing the formation and evolution of these OVs from both thermodynamic and kinetic perspectives, as well as their impact on the thermodynamic and kinetic properties of oxide cathodes. Finally, we offer insights into the utilization of OVs to enhance the energy density and lifespan of batteries. We expect that this review will advance our understanding of the role of OVs and subsequently boost the development of high-performance electrode materials for next-generation energy storage devices.
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Affiliation(s)
- Yu-Han Zhang
- Qingdao Industrial Energy Storage Research Institute, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P. R. China.
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- Shandong Energy Institute, Qingdao 266101, P. R. China
- Qingdao New Energy Shandong Laboratory, Qingdao 266101, P. R. China
| | - Shu Zhang
- Qingdao Industrial Energy Storage Research Institute, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P. R. China.
- Shandong Energy Institute, Qingdao 266101, P. R. China
- Qingdao New Energy Shandong Laboratory, Qingdao 266101, P. R. China
| | - Naifang Hu
- Qingdao Industrial Energy Storage Research Institute, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P. R. China.
- Shandong Energy Institute, Qingdao 266101, P. R. China
- Qingdao New Energy Shandong Laboratory, Qingdao 266101, P. R. China
| | - Yuehui Liu
- Qingdao Industrial Energy Storage Research Institute, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P. R. China.
- Shandong Energy Institute, Qingdao 266101, P. R. China
- Qingdao New Energy Shandong Laboratory, Qingdao 266101, P. R. China
| | - Jun Ma
- Qingdao Industrial Energy Storage Research Institute, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P. R. China.
- Shandong Energy Institute, Qingdao 266101, P. R. China
- Qingdao New Energy Shandong Laboratory, Qingdao 266101, P. R. China
| | - Pengxian Han
- Qingdao Industrial Energy Storage Research Institute, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P. R. China.
- Shandong Energy Institute, Qingdao 266101, P. R. China
- Qingdao New Energy Shandong Laboratory, Qingdao 266101, P. R. China
| | - Zhiwei Hu
- Max Plank Institute for Chemical Physics of Solids, Nothnitzer Strasse 40, D-01187 Dresden, Germany.
| | - Xiaogang Wang
- Qingdao Industrial Energy Storage Research Institute, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P. R. China.
- Shandong Energy Institute, Qingdao 266101, P. R. China
- Qingdao New Energy Shandong Laboratory, Qingdao 266101, P. R. China
| | - Guanglei Cui
- Qingdao Industrial Energy Storage Research Institute, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P. R. China.
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- Shandong Energy Institute, Qingdao 266101, P. R. China
- Qingdao New Energy Shandong Laboratory, Qingdao 266101, P. R. China
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15
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Wang W, Zhou Y, Zhang B, Huang W, Cheng L, Wang J, He X, Yu L, Xiao Z, Wen J, Liu T, Amine K, Ou X. Optimized In Situ Doping Strategy Stabling Single-Crystal Ultrahigh-Nickel Layered Cathode Materials. ACS NANO 2024; 18:8002-8016. [PMID: 38451853 DOI: 10.1021/acsnano.3c10986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
Single-crystal Ni-rich cathodes offer promising prospects in mitigating intergranular microcracks and side reaction issues commonly encountered in conventional polycrystalline cathodes. However, the utilization of micrometer-sized single-crystal particles has raised concerns about sluggish Li+ diffusion kinetics and unfavorable structural degradation, particularly in high Ni content cathodes. Herein, we present an innovative in situ doping strategy to regulate the dominant growth of characteristic planes in the single-crystal precursor, leading to enhanced mechanical properties and effectively tackling the challenges posed by ultrahigh-nickel layered cathodes. Compared with the traditional dry-doping method, our in situ doping approach possesses a more homogeneous and consistent modifying effect from the inside out, ensuring the uniform distribution of doping ions with large radius (Nb, Zr, W, etc). This mitigates the generally unsatisfactory substitution effect, thereby minimizing undesirable coating layers induced by different solubilities during the calcination process. Additionally, the uniformly dispersed ions from this in situ doping are beneficial for alleviating the two-phase coexistence of H2/H3 and optimizing the Li+ concentration gradient during cycling, thus inhibiting the formation of intragranular cracks and interfacial deterioration. Consequently, the in situ doped cathodes demonstrate exceptional cycle retention and rate performance under various harsh testing conditions. Our optimized in situ doping strategy not only expands the application prospects of elemental doping but also offers a promising research direction for developing high-energy-density single-crystal cathodes with extended lifetime.
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Affiliation(s)
- Wei Wang
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, School of Metallurgy and Environment, Central South University, Changsha 410083, P. R. China
| | - Yanan Zhou
- Zhejiang Power New Energy Co. Ltd., Zhuji 311899, P.R. China
| | - Bao Zhang
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, School of Metallurgy and Environment, Central South University, Changsha 410083, P. R. China
- Zhejiang Power New Energy Co. Ltd., Zhuji 311899, P.R. China
| | - Weiyuan Huang
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Lei Cheng
- Zhejiang Power New Energy Co. Ltd., Zhuji 311899, P.R. China
| | - Jing Wang
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Xinyou He
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, School of Metallurgy and Environment, Central South University, Changsha 410083, P. R. China
| | - Lei Yu
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Zhiming Xiao
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, School of Metallurgy and Environment, Central South University, Changsha 410083, P. R. China
| | - Jianguo Wen
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Tongchao Liu
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Khalil Amine
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Xing Ou
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, School of Metallurgy and Environment, Central South University, Changsha 410083, P. R. China
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16
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Han Q, Yu H, Cai L, Chen L, Li C, Jiang H. Unique insights into the design of low-strain single-crystalline Ni-rich cathodes with superior cycling stability. Proc Natl Acad Sci U S A 2024; 121:e2317282121. [PMID: 38416683 PMCID: PMC10927491 DOI: 10.1073/pnas.2317282121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 01/06/2024] [Indexed: 03/01/2024] Open
Abstract
Micro-sized single-crystalline Ni-rich cathodes are emerging as prominent candidates owing to their larger compact density and higher safety compared with poly-crystalline counterparts, yet the uneven stress distribution and lattice oxygen loss result in the intragranular crack generation and planar gliding. Herein, taking LiNi0.83Co0.12Mn0.05O2 as an example, an optimal particle size of 3.7 µm is predicted by simulating the stress distributions at various states of charge and their relationship with fracture free-energy, and then, the fitted curves of particle size with calcination temperature and time are further built, which guides the successful synthesis of target-sized particles (m-NCM83) with highly ordered layered structure by a unique high-temperature short-duration pulse lithiation strategy. The m-NCM83 significantly reduces strain energy, Li/O loss, and cationic mixing, thereby inhibiting crack formation, planar gliding, and surface degradation. Accordingly, the m-NCM83 exhibits superior cycling stability with highly structural integrity and dual-doped m-NCM83 further shows excellent 88.1% capacity retention.
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Affiliation(s)
- Qiang Han
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai200237, China
| | - Haifeng Yu
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai200237, China
| | - Lele Cai
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai200237, China
| | - Ling Chen
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai200237, China
| | - Chunzhong Li
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai200237, China
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai200237, China
| | - Hao Jiang
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai200237, China
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17
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Li J, Yang H, Deng Q, Li W, Zhang Q, Zhang Z, Chu Y, Yang C. Stabilizing Ni-rich Single-crystalline LiNi 0.83 Co 0.07 Mn 0.10 O 2 Cathodes using Ce/Gd Co-doped High-entropy Composite Surfaces. Angew Chem Int Ed Engl 2024; 63:e202318042. [PMID: 38225208 DOI: 10.1002/anie.202318042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/12/2024] [Accepted: 01/15/2024] [Indexed: 01/17/2024]
Abstract
Ni-rich layered oxides are promising lithium-ion batteries (LIBs) cathode materials for their high reversible capacity, but they suffer from fast structural degradation during cycling. Here, we report the Ce/Gd incorporated single-crystalline LiNi0.83 Co0.07 Mn0.10 O2 (SC-NCM) cathode materials with significantly enhanced cycling stability. The Gd ions are adequately incorporated in SC-NCM while Ce ions are prone to aggregate in the outer surface, resulting in the formation of a high-entropy zone in the near-surface of SC-NCM, including a Gd doped LiCeO2 (LCGO) shell and Ce/Gd dopant-concentrated layer. The high-entropy zone can effectively inhibit the oxygen evolution and prevent the formation of oxygen vacancies. Meanwhile, it leads to a greatly improved H2-H3 phase transformation reversibility and mitigated stress/strain caused by Li-ion extraction/insertion during (de)lithiation process. The synergetic effects of reduced oxygen vacancies concentration and mitigated stress/strain can effectively prevent the in-plane migration of TM ions, lattice planar gliding as well as the formation of intragranular nanocracks. Consequently, Ce/Gd incorporated SC-NCM (SC-NCM@CG2) delivers a high initial discharge specific capacity of 219.7 mAh g-1 at 0.1 C and an excellent cycling stability with a capacity retention of 90.2 % after 100 cycles at 1.0 C.
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Affiliation(s)
- Jing Li
- Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, South China University of Technology, 510006, Guangzhou, P. R. China
| | - Hui Yang
- State Key Laboratory of Material Processing and Die & Mould Technology, Department of Mechanics, School of Aerospace Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, P. R. China
| | - Qiang Deng
- Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, South China University of Technology, 510006, Guangzhou, P. R. China
| | - Wanming Li
- State Key Laboratory of Material Processing and Die & Mould Technology, Department of Mechanics, School of Aerospace Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, P. R. China
| | - Qimeng Zhang
- Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, South China University of Technology, 510006, Guangzhou, P. R. China
| | - Zihan Zhang
- State Key Laboratory of Material Processing and Die & Mould Technology, Department of Mechanics, School of Aerospace Engineering, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, P. R. China
| | - Youqi Chu
- Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, South China University of Technology, 510006, Guangzhou, P. R. China
| | - Chenghao Yang
- Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, South China University of Technology, 510006, Guangzhou, P. R. China
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18
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Song J, Huang L, Yang G, Liu T, Liu S, Cong G, Huang Y, Liu Z, Gao X, Geng L. Regulating Grind-Induced Lattice Distortion for Nickel-Rich Cathodes by Annealing. SMALL METHODS 2024; 8:e2301400. [PMID: 38009762 DOI: 10.1002/smtd.202301400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Indexed: 11/29/2023]
Abstract
The commercialization of high-performance nickel-rich cathodes always awaits a cost-effective, environmentally friendly, and large-scale preparation method. Despite a grinding process normally adopted in the synthesis of the nickel-rich cathodes, lattice distortion, rough surface, and sharp edge transformation inevitably occurr in the resultant samples. In this work, an additional annealing process is proposed that aims at regulating lattice distortion as well as achieving round and smoother morphologies without any structural or elemental modifications. Such a structural enhancement is favored for improved lithium diffusion and electrochemical stability during cycling. Consequently, the annealed cathodes demonstrate a considerable enhancement in capacity retention, escalating from 68.7% to 91.9% after 100 cycles at 1 C. Additionally, the specific capacity is significantly increased from 64 to 142 mAh g-1 at 5 C when compared to the unannealed cathodes. This work offers a straightforward and effective approach for reinforcing the electrochemical properties of nickel-rich cathodes.
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Affiliation(s)
- Jinpeng Song
- School of Materials Science and Engineering, Harbin Institute of Technology, BOX 433, Harbin, 150001, P. R. China
| | - Lujun Huang
- School of Materials Science and Engineering, Harbin Institute of Technology, BOX 433, Harbin, 150001, P. R. China
- Stake Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Guobo Yang
- School of Materials Science and Engineering, Harbin Institute of Technology, BOX 433, Harbin, 150001, P. R. China
| | - Tiefeng Liu
- College of Chemical and Biological Engineering, Zhejiang University, Zhejiang, 310058, P. R. China
| | - Shaoshuai Liu
- School of Materials Science and Engineering, Harbin Institute of Technology, BOX 433, Harbin, 150001, P. R. China
| | - Guanghui Cong
- School of Materials Science and Engineering, Harbin Institute of Technology, BOX 433, Harbin, 150001, P. R. China
| | - Yating Huang
- School of Materials Science and Engineering, Harbin Institute of Technology, BOX 433, Harbin, 150001, P. R. China
| | - Zheyuan Liu
- School of Materials Science and Engineering, Harbin Institute of Technology, BOX 433, Harbin, 150001, P. R. China
| | - Xiang Gao
- Center for High Pressure Science & Technology Advanced Research, Beijing, 100193, P. R. China
| | - Lin Geng
- School of Materials Science and Engineering, Harbin Institute of Technology, BOX 433, Harbin, 150001, P. R. China
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19
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Lin Z, Lin C, Chen F, Yu R, Xia Y. In Situ Construction of a Polymer Coating Layer on the LiNi 0.8Co 0.1Mn 0.1O 2 Cathode for High-Performance Lithium-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2024; 16:10692-10702. [PMID: 38356239 DOI: 10.1021/acsami.3c17742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Lithium-ion batteries (LIBs) are known for their high energy density but exhibit poor cyclic stability and safety risks due to side reactions between the electrode and electrolyte. To address these issues, a novel approach involving construction of a polymer coating layer (PCL) via in situ self-polymerization using 2,2,3,4,4,4-hexafluorobutyl methacrylate (HFBM) as an electrolyte additive on the cathode is proposed. The PCL endows the electrolyte with a high onset oxidation potential (4.78 V) and lithium-ion transference number (0.52). The uniform and robust in situ constructed PCL can effectively inhibit the severe irreversible side reactions and suppress harmful reactions, thus providing a protective barrier against degradation. The resulting Li||LiNi0.8Co0.1Mn0.1O2 batteries exhibit an improved discharge capacity retention of 80% at 1C over 100 cycles. These results demonstrate that the in situ self-polymerization strategy holds promising potential for enhancing LIB performance and long-term stability, especially when high-voltage cathode materials are used.
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Affiliation(s)
- Zhiyuan Lin
- College of New Energy, Ningbo University of Technology, Ningbo 315336, China
- Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology, School of Materials and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China
| | - Chenxiao Lin
- College of New Energy, Ningbo University of Technology, Ningbo 315336, China
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Fang Chen
- College of New Energy, Ningbo University of Technology, Ningbo 315336, China
| | - Ruoxin Yu
- College of New Energy, Ningbo University of Technology, Ningbo 315336, China
| | - Yonggao Xia
- College of New Energy, Ningbo University of Technology, Ningbo 315336, China
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
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20
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Tan Z, Li Y, Lei C, Li Y, Xi X, Jiang S, Wu F, He Z. In Situ Constructing Ultrastable Mechanical Integrity of Single-Crystalline LiNi 0.9 Co 0.05 Mn 0.05 O 2 Cathode by Interior and Exterior Decoration Strategy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2305618. [PMID: 37753872 DOI: 10.1002/smll.202305618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/28/2023] [Indexed: 09/28/2023]
Abstract
Planar gliding along with anisotropic lattice strain of single-crystalline nickel-rich cathodes (SCNRC) at highly delithiated states will induce severe delamination cracking that seriously deteriorates LIBs' cyclability. To address these issues, a novel lattice-matched MgTiO3 (MTO) layer, which exhibits same lattice structure as Ni-rich cathodes, is rationally constructed on single-crystalline LiNi0.9 Co0.05 Mn0.05 O2 (SC90) for ultrastable mechanical integrity. Intensive in/ex situ characterizations combined with theoretical calculations and finite element analysis suggest that the uniform MTO coating layer prevents direct contact between SC90 and organic electrolytes and enables rapid Li-ion diffusion with depressed Li-deficiency, thereby stabilizing the interfacial structure and accommodating the mechanical stress of SC90. More importantly, a superstructure is simultaneously formed in SC90, which can effectively alleviate the anisotropic lattice changes and decrease cation mobility during successive high-voltage de/intercalation processes. Therefore, the as-acquired MTO-modified SC90 cathode displays desirable capacity retention and high-voltage stability. When paired with commercial graphite anodes, the pouch-type cells with the MTO-modified SC90 can deliver a high capacity of 175.2 mAh g-1 with 89.8% capacity retention after 500 cycles. This lattice-matching coating strategy demonstrate a highly effective pathway to maintain the structural and interfacial stability in electrode materials, which can be a pioneering breakthrough in commercialization of Ni-rich cathodes.
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Affiliation(s)
- Zhouliang Tan
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha, 410083, China
| | - Yunjiao Li
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha, 410083, China
| | - Changlong Lei
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha, 410083, China
| | - Yue Li
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha, 410083, China
| | - Xiaoming Xi
- Changsha Research Institute of Mining and Metallurgy, Changsha, 410083, P. R. China
| | - Shijie Jiang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha, 410083, China
| | - Feixiang Wu
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha, 410083, China
| | - Zhenjiang He
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha, 410083, China
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21
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Lin C, Li J, Yin ZW, Huang W, Zhao Q, Weng Q, Liu Q, Sun J, Chen G, Pan F. Structural Understanding for High-Voltage Stabilization of Lithium Cobalt Oxide. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307404. [PMID: 37870392 DOI: 10.1002/adma.202307404] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/26/2023] [Indexed: 10/24/2023]
Abstract
The rapid development of modern consumer electronics is placing higher demands on the lithium cobalt oxide (LiCoO2 ; LCO) cathode that powers them. Increasing operating voltage is exclusively effective in boosting LCO capacity and energy density but is inhibited by the innate high-voltage instability of the LCO structure that serves as the foundation and determinant of its electrochemical behavior in lithium-ion batteries. This has stimulated extensive research on LCO structural stabilization. Here, it is focused on the fundamental structural understanding of LCO cathode from long-term studies. Multi-scale structures concerning LCO bulk and surface and various structural issues along with their origins and corresponding stabilization strategies with specific mechanisms are uncovered and elucidated at length, which will certainly deepen and advance the knowledge of LCO structure and further its inherent relationship with electrochemical performance. Based on these understandings, remaining questions and opportunities for future stabilization of the LCO structure are also emphasized.
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Affiliation(s)
- Cong Lin
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
- Department of Mechanical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, 999077, China
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, 999077, China
- College of Chemistry and Chemical Engineering, Peking University, Beijing, 100871, China
| | - Jianyuan Li
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
- College of Chemistry and Chemical Engineering, Peking University, Beijing, 100871, China
| | - Zu-Wei Yin
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Weiyuan Huang
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Qinghe Zhao
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Qingsong Weng
- Department of Mechanical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, 999077, China
| | - Qiang Liu
- Department of Mechanical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, 999077, China
| | - Junliang Sun
- College of Chemistry and Chemical Engineering, Peking University, Beijing, 100871, China
| | - Guohua Chen
- Department of Mechanical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, 999077, China
| | - Feng Pan
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
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22
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Wang Z, Wei W, Zhang T, Yu H, Li C, Chen L, Jiang H. Perovskite Oxides Alleviate Microstrain and Anion Loss of Radially-Aligned Ni-Rich Ncm811 Cathodes under High-Voltage Operations. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306160. [PMID: 37715337 DOI: 10.1002/smll.202306160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/02/2023] [Indexed: 09/17/2023]
Abstract
The energy density of Ni-rich cathodes is expected to be further unlocked by increasing the cut-off voltage to above 4.3 V, which nevertheless come with significantly increased irreversible phase transition and abundant side reactions. In this study, the perovskite oxides enhanced radial-aligned LiNi0.8 Co0.1 Mn0.1 O2 (NCM811) cathodes are reported, in which the coherent-growth La2 [LiTM]O4 clusters are evenly riveted into the crystals and the stable Lax Ca1- x [TM]O3- x protective layer is concurrently formed on the surface. The reciprocal interactions greatly reduce the lattice strain during de-/lithiation. Meantime, the abundant oxygen vacancies of the coating layer are proved to reversibly capture (state of charge) and re-release (state of discharge) the oxygen radicals, fully avoiding their correlative side reactions. The resultant NCM811 displays negligible O2 and CO2 emissions when charging to 4.5 V as well as a thinner CEI film, therefore delivering a large capacity of 225 mAh g-1 at 0.1C in coin-type half-cells and a high retention of 88.3% after 1000 cycles at 1C in pouch-type full-cells within 2.7-4.5 V. The development of high-voltage Ni-rich cathodes exhibits a highly effective pathway to further increase their energy density.
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Affiliation(s)
- Zhihong Wang
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Wu Wei
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Tao Zhang
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Haifeng Yu
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Chunzhong Li
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Ling Chen
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Hao Jiang
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
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23
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Martens I, Vanpeene V, Vostrov N, Leake S, Zatterin E, Auvergniot J, Drnec J, Richard MI, Villanova J, Schulli T. Imaging Voids and Defects Inside Li-Ion Cathode LiNi 0.6Mn 0.2Co 0.2O 2 Single Crystals. ACS APPLIED MATERIALS & INTERFACES 2023; 15:59319-59328. [PMID: 38085792 DOI: 10.1021/acsami.3c10509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Li-ion battery cathode active materials obtained from different sources or preparation methods often exhibit broadly divergent performance and stability despite no obvious differences in morphology, purity, and crystallinity. We show how state-of-the-art, commercial, nominally single crystalline LiNi0.6Mn0.2Co0.2O2 (NMC-622) particles possess extensive internal nanostructure even in the pristine state. Scanning X-ray diffraction microscopy reveals the presence of interlayer strain gradients, and crystal bending is attributed to oxygen vacancies. Phase contrast X-ray nano-tomography reveals two different kinds of particles, welded/aggregated, and single crystal like, and emphasizes the intra- and interparticle heterogeneities from the nano- to the microscale. It also detects within the imaging resolution (100 nm) substantial quantities of nanovoids hidden inside the bulk of two-thirds of the overall studied particles (around 3000), with an average value of 12.5%v per particle and a mean size of 148 nm. The powerful combination of both techniques helps prescreening and quantifying the defective nature of cathode material and thus anticipating their performance in electrode assembly/battery testing.
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Affiliation(s)
- Isaac Martens
- ESRF─The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Victor Vanpeene
- ESRF─The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
- Université Grenoble Alpes, CEA Grenoble, LITEN, 17 rue des Martyrs, 38054 Grenoble, France
| | - Nikita Vostrov
- ESRF─The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Steven Leake
- ESRF─The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Edoardo Zatterin
- ESRF─The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | | | - Jakub Drnec
- ESRF─The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Marie-Ingrid Richard
- ESRF─The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
- Univ. Grenoble Alpes, CEA Grenoble, IRIG, MEM, NRX, 17 rue des Martyrs, 38000 Grenoble, France
| | - Julie Villanova
- ESRF─The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Tobias Schulli
- ESRF─The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
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24
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Dai Z, Li Z, Chen R, Wu F, Li L. Defective oxygen inert phase stabilized high-voltage nickel-rich cathode for high-energy lithium-ion batteries. Nat Commun 2023; 14:8087. [PMID: 38057301 DOI: 10.1038/s41467-023-43792-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 11/20/2023] [Indexed: 12/08/2023] Open
Abstract
Pushing layered cathode to higher operating voltage can facilitate the realization of high-energy lithium-ion batteries. However, the released oxygen species initiate materials surface upon highly delithiated states will react severely with electrolyte, accelerating the structure deterioration and triggering the thermal degradation. Here we propose an inert phase of La2Mo2O9 with abundant oxygen vacancies (about 41%) by regulating the annealing temperature to engineer the cathode interface beyond conventional modifications. By employing LiNi0.8Co0.1Mn0.1O2 as a model system and extending to higher voltage-operated LiCoO2 and Li-rich cathode, we demonstrate that the introduced lanthanum and molybdenum ions will transfer electrons to enhance the surface oxygen electronegativities, thus served as "oxygen anchor" to alleviate oxygen evolution. Furthermore, the possible released oxygen can be operando captured and reserved by β-phase La2Mo2O9 depositor for the intrinsic high oxygen vacancy formation energy. The reaction involving oxygen species with electrolyte is fundamentally diminished, thus effectively mitigate the structure deterioration and elevate the electrochemical performances, enabling a 1.5-Ah pouch-type full cell to exhibit negligible 6.0% capacity loss after 400 cycles.
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Affiliation(s)
- Zhongsheng Dai
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Zhujie Li
- Advanced Technology Research Institute, Beijing Institute of Technology, Jinan, 250300, P. R. China
| | - Renjie Chen
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China.
- Advanced Technology Research Institute, Beijing Institute of Technology, Jinan, 250300, P. R. China.
- Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing, 100081, P. R. China.
| | - Feng Wu
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
- Advanced Technology Research Institute, Beijing Institute of Technology, Jinan, 250300, P. R. China
- Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing, 100081, P. R. China
| | - Li Li
- Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China.
- Advanced Technology Research Institute, Beijing Institute of Technology, Jinan, 250300, P. R. China.
- Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing, 100081, P. R. China.
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25
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Yang J, Xu S, Yu J, Li Y, He Z, Wu F, Zhang T, Hao S, Jiang S, Pan J, Xi X, Liu S. Enhanced mechanical strength of a highly de-lithiated single-crystal Ni-rich cathode to suppress irreversible planar gliding. Chem Commun (Camb) 2023; 59:9980-9983. [PMID: 37503825 DOI: 10.1039/d3cc01338c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
The mechanical properties of de-lithiated single-crystal Ni-rich cathodes are causing extensive concern. Here, we first show that the compression hardness of single crystal Ni-rich cathode particles decreases significantly at highly de-lithiated states by micro-compression testing. Thus, phase-boundary hardening was introduced to inhibit the planar gliding, resulting in excellent electrochemical performance.
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Affiliation(s)
- Jiachao Yang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China.
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, P. R. China
| | - Shenyang Xu
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen 518055, China
| | - Jian Yu
- Ningbo Ronbay New Energy Technol Co Ltd, Tanjialing East Rd 39, Ningbo 315400, Zhejiang, P. R. China
| | - Yunjiao Li
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China.
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, P. R. China
| | - Zhenjiang He
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China.
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, P. R. China
| | - Feixiang Wu
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China.
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, P. R. China
| | - Tao Zhang
- Ningbo Ronbay New Energy Technol Co Ltd, Tanjialing East Rd 39, Ningbo 315400, Zhejiang, P. R. China
| | - Shuaipeng Hao
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China.
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, P. R. China
| | - Shijie Jiang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China.
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, P. R. China
| | - Jiawei Pan
- School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China.
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, P. R. China
| | - Xiaoming Xi
- Changsha Research Institute of Mining and Metallurgy, Changsha 410083, P. R. China
| | - Shuaiwei Liu
- Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344, Eggenstein-Leopoldshafen, Germany
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26
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Wang Y, Yuan Y, Liao X, Van Tendeloo G, Zhao Y, Sun C. Chip-based in situ TEM investigation of structural thermal instability in aged layered cathode. NANOSCALE ADVANCES 2023; 5:4182-4190. [PMID: 37560427 PMCID: PMC10408578 DOI: 10.1039/d3na00201b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 07/10/2023] [Indexed: 08/11/2023]
Abstract
Thermally induced oxygen release is an intrinsic structural instability in layered cathodes, which causes thermal runaway issues and becomes increasingly critical with the continuous improvement in energy density. Furthermore, thermal runaway events always occur in electrochemically aged cathodes, where the coupling of the thermal and electrochemical effect remains elusive. Herein, we report the anomalous segregation of cobalt metal in an aged LiCoO2 cathode, which is attributed to the local exposure of the high-energy (100) surface of LiCoO2 and weak interface Co-O dangling bonds significantly promoting the diffusion of Co. The presence of the LCO-Co interface severely aggregated the oxygen release in the form of dramatic Co growth. A unique particle-to-particle oxygen release pathway was also found, starting from the isolated high reduction areas induced by the cycling heterogeneity. This study provides atomistic insight into the robust coupling between the intrinsic structural instability and electrochemical cycling.
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Affiliation(s)
- Yuhan Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology Wuhan 430070 China
| | - Yuan Yuan
- Hongqi Integrated Circuit (Zhuhai) Co., Ltd China
| | - Xiaobin Liao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology Wuhan 430070 China
| | - Gustaaf Van Tendeloo
- NRC (Nanostructure Research Centre), Wuhan University of Technology Wuhan 430070 China
- EMAT (Electron Microscopy for Materials Science), University of Antwerp Belgium
| | - Yan Zhao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology Wuhan 430070 China
| | - Congli Sun
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology Wuhan 430070 China
- NRC (Nanostructure Research Centre), Wuhan University of Technology Wuhan 430070 China
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27
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Hua W, Zhang J, Wang S, Cheng Y, Li H, Tseng J, Wu Z, Shen CH, Dolotko O, Liu H, Hung SF, Tang W, Li M, Knapp M, Ehrenberg H, Indris S, Guo X. Long-Range Cationic Disordering Induces two Distinct Degradation Pathways in Co-Free Ni-Rich Layered Cathodes. Angew Chem Int Ed Engl 2023; 62:e202214880. [PMID: 36545843 DOI: 10.1002/anie.202214880] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/28/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022]
Abstract
Ni-rich layered oxides are one of the most attractive cathode materials in high-energy-density lithium-ion batteries, their degradation mechanisms are still not completely elucidated. Herein, we report a strong dependence of degradation pathways on the long-range cationic disordering of Co-free Ni-rich Li1-m (Ni0.94 Al0.06 )1+m O2 (NA). Interestingly, a disordered layered phase with lattice mismatch can be easily formed in the near-surface region of NA particles with very low cation disorder (NA-LCD, m≤0.06) over electrochemical cycling, while the layered structure is basically maintained in the core of particles forming a "core-shell" structure. Such surface reconstruction triggers a rapid capacity decay during the first 100 cycles between 2.7 and 4.3 V at 1 C or 3 C. On the contrary, the local lattice distortions are gradually accumulated throughout the whole NA particles with higher degrees of cation disorder (NA-HCD, 0.06≤m≤0.15) that lead to a slow capacity decay upon cycling.
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Affiliation(s)
- Weibo Hua
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, Shaanxi 710049, China.,Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Jilu Zhang
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, Shaanxi 710049, China
| | - Suning Wang
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, Shaanxi 710049, China.,Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Yi Cheng
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Hang Li
- Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Jochi Tseng
- Diffraction and Scattering Division, Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Zhonghua Wu
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, China
| | | | - Oleksandr Dolotko
- Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Hao Liu
- Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Sung-Fu Hung
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Wei Tang
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, Shaanxi 710049, China
| | - Mingtao Li
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, Shaanxi 710049, China
| | - Michael Knapp
- Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Helmut Ehrenberg
- Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Sylvio Indris
- Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Xiaodong Guo
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, 610065, Chengdu, China
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Zuo Y, Shang H, Hao J, Song J, Ning F, Zhang K, He L, Xia D. Regulating the Potential of Anion Redox to Reduce the Voltage Hysteresis of Li-Rich Cathode Materials. J Am Chem Soc 2023; 145:5174-5182. [PMID: 36757130 DOI: 10.1021/jacs.2c11640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Layered Li-rich oxides (LROs) that exhibit anionic and cationic redox are extensively studied due to their high energy storage capacities. However, voltage hysteresis, which reduces the energy conversion efficiency of the battery, is a critical limitation in the commercial application of LROs. Herein, using two Li2RuO3 (LRO) model materials with C2/c and P21/m symmetries, we explored the relationship between voltage hysteresis and the electronic structure of Li2RuO3 by neutron diffraction, in situ X-ray powder diffraction, X-ray absorption spectroscopy, macro magnetic study, and electron paramagnetic resonance (EPR) spectroscopy. The charge-transfer band gap of the LRO cathode material with isolated eg electron filling decreases, reducing the oxidation potential of anion redox and thus displaying a reduced voltage hysteresis. We further synthesized Mn-based Li-rich cathode materials with practical significance and different electron spin states. Low-spin Li1.15Ni0.377Mn0.473O2 with isolated eg electron filling exhibited a reduced voltage hysteresis and high energy conversion efficiency. We rationalized this finding via density functional theory calculations. This discovery should provide critical guidance in designing and preparing high-energy layered Li-rich cathode materials for use in next-generation high-energy-density Li-ion batteries based on anion redox activity.
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Affiliation(s)
- Yuxuan Zuo
- Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials, School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Huaifang Shang
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials (Ministry of Education), School of Chemistry and Material Science, Shanxi Normal University, Taiyuan 030031, China
| | - Jiazheng Hao
- Spallation Neutron Source Science Center, Dongguan 523803, China
| | - Jin Song
- Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials, School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Fanghua Ning
- Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials, School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Kun Zhang
- Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials, School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Lunhua He
- Spallation Neutron Source Science Center, Dongguan 523803, China
| | - Dingguo Xia
- Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials, School of Materials Science and Engineering, Peking University, Beijing 100871, China
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Liang L, Li X, Su M, Wang L, Sun J, Liu Y, Hou L, Yuan C. Chemomechanically Stable Small Single-crystal Mo-doped LiNi 0.6 Co 0.2 Mn 0.2 O 2 Cathodes for Practical 4.5 V-class Pouch-type Li-ion Batteries. Angew Chem Int Ed Engl 2023; 62:e202216155. [PMID: 36653894 DOI: 10.1002/anie.202216155] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/27/2022] [Accepted: 01/18/2023] [Indexed: 01/20/2023]
Abstract
High voltage can cost-effectively boost energy density of Ni-rich cathodes based Li-ion batteries (LIBs), but compromises their mechanical, electrochemical and thermal-driven stability. Herein, a collaborative strategy (i.e., small single-crystal design and hetero-atom doping) is devised to construct a chemomechanically reliable small single-crystal Mo-doped LiNi0.6 Co0.2 Mn0.2 O2 (SS-MN6) operating stably under high voltage (≥4.5 V vs. Li/Li+ ). The substantially reduced particle size combined with Mo6+ doping absorbs accumulated localized stress to eradicate cracks formation, subdues the surface side reactions and lattice oxygen missing meanwhile, and improves thermal tolerance at highly delithiated state. Consequently, the SS-MN6 based pouch cells are endowed with striking deep cycling stability and wide-temperature-tolerance capability. The contribution here provides a promising way to construct advanced cathodes with superb chemomechanical stability for next-generation LIBs.
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Affiliation(s)
- Longwei Liang
- School of Materials Science & Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China
| | - Xiaoying Li
- School of Materials Science & Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China
| | - Maoshui Su
- School of Materials Science & Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China
| | - Lixian Wang
- School of Materials Science & Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China
| | - Jinfeng Sun
- School of Materials Science & Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China
| | - Yang Liu
- School of Materials Science & Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China
| | - Linrui Hou
- School of Materials Science & Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China
| | - Changzhou Yuan
- School of Materials Science & Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China
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Tan Z, Li Y, Xi X, Jiang S, Li X, Shen X, He Z. Construction of Planar Gliding Restriction Buffer and Kinetic Self-Accelerator Stabilizing Single-Crystalline LiNi 0.9Co 0.05Mn 0.05O 2 Cathode. ACS APPLIED MATERIALS & INTERFACES 2023; 15:8555-8566. [PMID: 36748116 DOI: 10.1021/acsami.2c22815] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The single-crystalline Ni-rich cathode has aroused much attention for extenuating the cycling and safety crises in comparison to the polycrystalline cathode. However, planar gliding and kinetic hindrance hinder its chemo-mechanical properties with cycling, which induce delamination cracking and damage the mechanical integrity in single crystals. Herein, a robust Li2.64(Sc0.9Ti0.1)2(PO4)3 (LSTP) ion/electron conductive network was constructed to decorate single-crystal LiNi0.9Co0.05Mn0.05O2 (SC90) particles. Via physicochemical characterizations and theoretical calculations, this LSTP coating that evenly grows on the SC90 particle with good lattice matching and strong bonding effectively restricts the anisotropic lattice collapse along the c-axis and the cation mixing activity of SC90, thus suppressing planar gliding and delamination cracking during repeated high-voltage lithiation/delithiation processes. Moreover, such a 3D LSTP network can also facilitate the lithium-ion transport and prevent the electrolyte's corrosion, lightening the kinetic hindrance and triggering the surface phase transformation. Combined with the Li metal anode, the LSTP-modified SC90 cell exhibits a desirable capacity retention of 90.5% at 5 C after 300 cycles and stabilizes the operation at 4.3/4.5 V. Our results provide surface modification engineering to mitigate planar gliding and kinetic hindrance of the single-crystalline ultra-high Ni-rich cathode, which inspires peers to design other layered cathode materials.
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Affiliation(s)
- Zhouliang Tan
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Yunjiao Li
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Xiaoming Xi
- Changsha Research Institute of Mining and Metallurgy, Changsha 410083, PR China
| | - Shijie Jiang
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Xiaohui Li
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Xingjie Shen
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
| | - Zhenjiang He
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, China
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31
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Lei X, Zhao J, Wang J, Su D. Tracking lithiation with transmission electron microscopy. Sci China Chem 2023. [DOI: 10.1007/s11426-022-1486-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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