1
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Leung K, Zhang M. Hybrid Density Functional Theory Comparison of Oxygen Release and Solvent Decomposition Kinetics on Li xNiO 2 Surfaces. J Phys Chem Lett 2024; 15:4686-4693. [PMID: 38656172 DOI: 10.1021/acs.jpclett.4c00424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
High-nickel-content layered oxides are among the most promising electric vehicle battery cathode materials. However, their interfacial reactivity with electrolytes and tendency toward oxygen release (possibly yielding reactive 1O2) remain degradation concerns. Elucidating the most relevant (i.e., fastest) interfacial degradation mechanism will facilitate future mitigation strategies. We apply screened hybrid density functional (HSE06) calculations to compare the reaction kinetics of LixNiO2 surfaces with ethylene carbonate (EC) with those of O2 release. On both the (001) and (104) facets, EC oxidative decomposition exhibits lower activation energies than O2 release. Our calculations, coupled with previously computed liquid-phase reaction rates of 1O2 with EC, strongly question the role of "reactive 1O2" species in electrolyte oxidative degradation. The possible role of other oxygen species is discussed. To deal with the challenges of modeling LixNiO2 surface reactivity, we emphasize a "local structure" approach instead of pursuing the global energy minimum.
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Affiliation(s)
- Kevin Leung
- Sandia National Laboratories, MS 0750, Albuquerque, New Mexico 87185, United States
| | - Minghao Zhang
- Department of NanoEngineering, University of California at San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
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2
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Phelan CE, Björklund E, Singh J, Fraser M, Didwal PN, Rees GJ, Ruff Z, Ferrer P, Grinter DC, Grey CP, Weatherup RS. Role of Salt Concentration in Stabilizing Charged Ni-Rich Cathode Interfaces in Li-Ion Batteries. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2024; 36:3334-3344. [PMID: 38617803 PMCID: PMC11008099 DOI: 10.1021/acs.chemmater.4c00004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 04/16/2024]
Abstract
The cathode-electrolyte interphase (CEI) in Li-ion batteries plays a key role in suppressing undesired side reactions while facilitating Li-ion transport. Ni-rich layered cathode materials offer improved energy densities, but their high interfacial reactivities can negatively impact the cycle life and rate performance. Here we investigate the role of electrolyte salt concentration, specifically LiPF6 (0.5-5 m), in altering the interfacial reactivity of charged LiN0.8Mn0.1Co0.1O2 (NMC811) cathodes in standard carbonate-based electrolytes (EC/EMC vol %/vol % 3:7). Extended potential holds of NMC811/Li4Ti5O12 (LTO) cells reveal that the parasitic electrolyte oxidation currents observed are strongly dependent on the electrolyte salt concentration. X-ray photoelectron and absorption spectroscopy (XPS/XAS) reveal that a thicker LixPOyFz-/LiF-rich CEI is formed in the higher concentration electrolytes. This suppresses reactions with solvent molecules resulting in a thinner, or less-dense, reduced surface layer (RSL) with lower charge transfer resistance and lower oxidation currents at high potentials. The thicker CEI also limits access of acidic species to the RSL suppressing transition-metal dissolution into the electrolyte, as confirmed by nuclear magnetic resonance (NMR) spectroscopy and inductively coupled plasma optical emission spectroscopy (ICP-OES). This provides insight into the main degradation processes occurring at Ni-rich cathode interfaces in contact with carbonate-based electrolytes and how electrolyte formulation can help to mitigate these.
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Affiliation(s)
- Conor
M. E. Phelan
- Department
of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, U.K.
| | - Erik Björklund
- Department
of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, U.K.
- The
Faraday Institution, Quad One, Harwell Science
and Innovation Campus, Didcot OX11 0RA, U.K.
| | - Jasper Singh
- Department
of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, U.K.
| | - Michael Fraser
- Department
of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, U.K.
- The
Faraday Institution, Quad One, Harwell Science
and Innovation Campus, Didcot OX11 0RA, U.K.
| | - Pravin N. Didwal
- Department
of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, U.K.
- The
Faraday Institution, Quad One, Harwell Science
and Innovation Campus, Didcot OX11 0RA, U.K.
| | - Gregory J. Rees
- Department
of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, U.K.
- The
Faraday Institution, Quad One, Harwell Science
and Innovation Campus, Didcot OX11 0RA, U.K.
| | - Zachary Ruff
- The
Faraday Institution, Quad One, Harwell Science
and Innovation Campus, Didcot OX11 0RA, U.K.
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
| | - Pilar Ferrer
- Diamond
Light Source, Didcot, Oxfordshire OX11 0DE, U.K.
| | | | - Clare P. Grey
- The
Faraday Institution, Quad One, Harwell Science
and Innovation Campus, Didcot OX11 0RA, U.K.
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
| | - Robert S. Weatherup
- Department
of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, U.K.
- The
Faraday Institution, Quad One, Harwell Science
and Innovation Campus, Didcot OX11 0RA, U.K.
- Diamond
Light Source, Didcot, Oxfordshire OX11 0DE, U.K.
- Research
Complex at Harwell, Didcot, Oxfordshire OX11 0DE, U.K.
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3
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Jabeen M, Ren Z, Ishaq M, Yuan S, Bao X, Shu C, Liu X, Liu X, Li L, He YS, Ma ZF, Liao XZ. Stable Operation Induced by Plastic Crystal Electrolyte Used in Ni-Rich NMC811 Cathodes for Li-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37890042 DOI: 10.1021/acsami.3c10643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/29/2023]
Abstract
The LiNi0.8Mn0.1Co0.1O2 (NMC811) cathode material has been of significant consideration owing to its high energy density for Li-ion batteries. However, the poor cycling stability in a carbonate electrolyte limits its further development. In this work, we report the excellent electrochemical performance of the NMC811 cathode using a rational electrolyte based on organic ionic plastic crystal N-ethyl-N-methyl pyrrolidinium bis(fluorosulfonyl)imide C2mpyr[FSI], with the addition of (1:1 mol) LiFSI salt. This plastic crystal electrolyte (PC) is a thick viscous liquid with an ionic conductivity of 2.3 × 10-3 S cm-1 and a high Li+ transference number of 0.4 at ambient temperature. The NMC811@PC cathode delivers a discharge capacity of 188 mA h g-1 at a rate of 0.2 C with a capacity retention of 94.5% after 200 cycles, much higher than that of using a carbonate electrolyte (54.3%). Moreover, the NMC811@PC cathode also exhibits a superior high-rate capability with a discharge capacity of 111.0 mA h g-1 at the 10 C rate. The significantly improved cycle performance of the NMC811@PC cathode can be attributed to the high Li+ conductivity of the PC electrolyte, the stable Li+ conductive CEI film, and the maintaining of particle integrity during long-term cycling. The admirable electrochemical performance of the NMC811|C2mpyr[FSI]:[LiFSI] system exhibits a promising application of the plastic crystal electrolyte for high voltage layered oxide cathode materials in advanced lithium-ion batteries.
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Affiliation(s)
- Maher Jabeen
- School of Chemistry and Chemical Engineering, Shanghai Electrochemical Energy Device Research Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhouhong Ren
- School of Chemistry and Chemical Engineering, Shanghai Electrochemical Energy Device Research Center, Shanghai Jiao Tong University, Shanghai 200240, China
- In-Situ Center for Physical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Muhammad Ishaq
- School of Chemistry and Chemical Engineering, Shanghai Electrochemical Energy Device Research Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Siqi Yuan
- School of Chemistry and Chemical Engineering, Shanghai Electrochemical Energy Device Research Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xu Bao
- School of Chemistry and Chemical Engineering, Shanghai Electrochemical Energy Device Research Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Chaojiu Shu
- School of Chemistry and Chemical Engineering, Shanghai Electrochemical Energy Device Research Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiaoning Liu
- School of Chemistry and Chemical Engineering, Shanghai Electrochemical Energy Device Research Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xi Liu
- School of Chemistry and Chemical Engineering, Shanghai Electrochemical Energy Device Research Center, Shanghai Jiao Tong University, Shanghai 200240, China
- In-Situ Center for Physical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Lei Li
- School of Chemistry and Chemical Engineering, Shanghai Electrochemical Energy Device Research Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yu-Shi He
- School of Chemistry and Chemical Engineering, Shanghai Electrochemical Energy Device Research Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zi-Feng Ma
- School of Chemistry and Chemical Engineering, Shanghai Electrochemical Energy Device Research Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiao-Zhen Liao
- School of Chemistry and Chemical Engineering, Shanghai Electrochemical Energy Device Research Center, Shanghai Jiao Tong University, Shanghai 200240, China
- Key Laboratory of Green and High-end Utilization of Salt Lake Resources (Chinese Academy of Sciences), Shanghai Jiao Tong University, Shanghai 200240, China
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4
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Xiao P, Yun X, Chen Y, Guo X, Gao P, Zhou G, Zheng C. Insights into the solvation chemistry in liquid electrolytes for lithium-based rechargeable batteries. Chem Soc Rev 2023; 52:5255-5316. [PMID: 37462967 DOI: 10.1039/d3cs00151b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
Lithium-based rechargeable batteries have dominated the energy storage field and attracted considerable research interest due to their excellent electrochemical performance. As indispensable and ubiquitous components, electrolytes play a pivotal role in not only transporting lithium ions, but also expanding the electrochemical stable potential window, suppressing the side reactions, and manipulating the redox mechanism, all of which are closely associated with the behavior of solvation chemistry in electrolytes. Thus, comprehensively understanding the solvation chemistry in electrolytes is of significant importance. Here we critically reviewed the development of electrolytes in various lithium-based rechargeable batteries including lithium-metal batteries (LMBs), nonaqueous lithium-ion batteries (LIBs), lithium-sulfur batteries (LSBs), lithium-oxygen batteries (LOBs), and aqueous lithium-ion batteries (ALIBs), and emphasized the effects of interactions between cations, anions, and solvents on solvation chemistry, and functions of solvation chemistry in different types of electrolytes (strong solvating electrolytes, moderate solvating electrolytes, and weak solvating electrolytes) on the electrochemical performance and redox mechanism in the abovementioned rechargeable batteries. Specifically, the significant effects of solvation chemistry on the stability of electrode-electrolyte interphases, suppression of lithium dendrites in LMBs, inhibition of the co-intercalation of solvents in LIBs, improvement of anodic stability at high cut-off voltages in LMBs, LIBs and ALIBs, regulation of redox pathways in LSBs and LOBs, and inhibition of hydrogen/oxygen evolution reactions in LOBs are thoroughly summarized. Finally, the review concludes with a prospective outlook, where practical issues of electrolytes, advanced in situ/operando techniques to illustrate the mechanism of solvation chemistry, and advanced theoretical calculation and simulation techniques such as "material knowledge informed machine learning" and "artificial intelligence (AI) + big data" driven strategies for high-performance electrolytes have been proposed.
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Affiliation(s)
- Peitao Xiao
- College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, Hunan, 410073, China.
| | - Xiaoru Yun
- College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, Hunan, 410073, China.
| | - Yufang Chen
- College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, Hunan, 410073, China.
| | - Xiaowei Guo
- College of Computer, National University of Defense Technology, Changsha, Hunan, 410073, China
| | - Peng Gao
- College of Materials Science and Engineering, Hunan Joint International Laboratory of Advanced Materials and Technology of Clean Energy, Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology, Hunan University Changsha, Changsha, Hunan, 410082, China
| | - Guangmin Zhou
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China.
| | - Chunman Zheng
- College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, Hunan, 410073, China.
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5
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Luo H, Zhang B, Zhang H, Zheng Q, Wu X, Yan Y, Li Z, Tang Y, Hao W, Liu G, Hong YH, Ye J, Qiao Y, Sun SG. Full-Dimensional Analysis of Electrolyte Decomposition on Cathode-Electrolyte Interface: Establishing Characterization Paradigm on LiNi 0.6Co 0.2Mn 0.2O 2 Cathode with Potential Dependence. J Phys Chem Lett 2023; 14:4565-4574. [PMID: 37161991 DOI: 10.1021/acs.jpclett.3c00674] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Cathode electrolyte interphase (CEI) layers derived from electrolyte oxidative decomposition can passivate the cathode surface and prevent its direct contact with electrolyte. The inorganics-dominated inner solid electrolyte layer (SEL) and organics-rich outer quasi-solid-electrolyte layer (qSEL) constitute the CEI layer, and both merge at the junction without a clear boundary, which assures the CEI layer with both ionic-conducting and electron-blocking properties. However, the typical "wash-then-test" pattern of characterizations aiming at the microstructure of CEI layers would dissolve the qSEL and even destroy the SEL, leading to an overanalysis of electrolyte decomposition pathway and misassignment of CEI architecture (e.g., component and morphology). In this study, we established a full-dimensional characterization paradigm (combining Fourier transform infrared, solution NMR, X-ray photoelectron spectroscopy, and mass spectrometry technologies) and reconstructed the original CEI layer model. Besides, the feasibility of this characterization paradigm has been verified in a wide operating voltage range on a typical LiNixMnyCozO2 cathode.
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Affiliation(s)
- Haiyan Luo
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
| | - Baodan Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
| | - Haitang Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
| | - Qizheng Zheng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
| | - Xiaohong Wu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
| | - Yawen Yan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
| | - Zhengang Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
| | - Yonglin Tang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
| | - Weiwei Hao
- Fujian Science & Technology Innovation Laboratory for Energy Materials of China (Tan Kah Kee Innovation Laboratory), Xiamen 361005, PR China
| | - Gaowa Liu
- Fujian Science & Technology Innovation Laboratory for Energy Materials of China (Tan Kah Kee Innovation Laboratory), Xiamen 361005, PR China
| | - Yu-Hao Hong
- Fujian Science & Technology Innovation Laboratory for Energy Materials of China (Tan Kah Kee Innovation Laboratory), Xiamen 361005, PR China
| | - Jinyu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
| | - Yu Qiao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
- Fujian Science & Technology Innovation Laboratory for Energy Materials of China (Tan Kah Kee Innovation Laboratory), Xiamen 361005, PR China
| | - Shi-Gang Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
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6
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Zou Y, Ma Z, Liu G, Li Q, Yin D, Shi X, Cao Z, Tian Z, Kim H, Guo Y, Sun C, Cavallo L, Wang L, Alshareef HN, Sun YK, Ming J. Non-Flammable Electrolyte Enables High-Voltage and Wide-Temperature Lithium-Ion Batteries with Fast Charging. Angew Chem Int Ed Engl 2023; 62:e202216189. [PMID: 36567260 DOI: 10.1002/anie.202216189] [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: 11/03/2022] [Revised: 12/22/2022] [Accepted: 12/23/2022] [Indexed: 12/27/2022]
Abstract
Electrolyte design has become ever more important to enhance the performance of lithium-ion batteries (LIBs). However, the flammability issue and high reactivity of the conventional electrolytes remain a major problem, especially when the LIBs are operated at high voltage and extreme temperatures. Herein, we design a novel non-flammable fluorinated ester electrolyte that enables high cycling stability in wide-temperature variations (e.g., -50 °C-60 °C) and superior power capability (fast charge rates up to 5.0 C) for the graphite||LiNi0.8 Co0.1 Mn0.1 O2 (NCM811) battery at high voltage (i.e., >4.3 V vs. Li/Li+ ). Moreover, this work sheds new light on the dynamic evolution and interaction among the Li+ , solvent, and anion at the molecular level. By elucidating the fundamental relationship between the Li+ solvation structure and electrochemical performance, we can facilitate the development of high-safety and high-energy-density batteries operating in harsh conditions.
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Affiliation(s)
- Yeguo Zou
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.,University of Science and Technology of China, Hefei, 230026, China
| | - Zheng Ma
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Gang Liu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.,University of Science and Technology of China, Hefei, 230026, China
| | - Qian Li
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Dongming Yin
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.,University of Science and Technology of China, Hefei, 230026, China
| | - Xuejian Shi
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Zhen Cao
- Materials Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Zhengnan Tian
- Materials Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Hun Kim
- Department of Energy Engineering, Hanyang University, Seoul, 133-791 (Republic of, Korea
| | - Yingjun Guo
- Huzhou Kunlun Enchem Power Battery Materials Company, Ltd., Huzhou, 313000, P. R. China
| | - Chunsheng Sun
- Huzhou Kunlun Enchem Power Battery Materials Company, Ltd., Huzhou, 313000, P. R. China
| | - Luigi Cavallo
- Materials Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Limin Wang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.,University of Science and Technology of China, Hefei, 230026, China
| | - Husam N Alshareef
- Materials Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Yang-Kook Sun
- Department of Energy Engineering, Hanyang University, Seoul, 133-791 (Republic of, Korea
| | - Jun Ming
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.,University of Science and Technology of China, Hefei, 230026, China
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7
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Zhang B, Wang L, Zhang Y, Wang X, Qiao Y, Sun SG. Reliable impedance analysis of Li-ion battery half-cell by standardization on electrochemical impedance spectroscopy (EIS). J Chem Phys 2023; 158:054202. [PMID: 36754812 DOI: 10.1063/5.0139347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Electrochemical impedance spectroscopy (EIS) is a powerful characterization technique for the in-depth investigation of kinetic/transport parameters detection, reaction mechanism understanding, and degradation effects exploration in lithium-ion battery (LIB) systems. However, due to the lack of standardized criterion/paradigm, severe misinterpretations occur frequently during an EIS measurement. In this paper, the significance of instrumental accuracy is described and the character/principle of selection on the simulation model is illuminated/proposed, showing that an adequate precision device and an appropriate fitting model are a prerequisite for a correct EIS analysis. Moreover, the drawbacks of conventional two-electrode EIS experiments for typical coin-type cells are rigorously pointed out by comparison with the ideal three-electrode configuration, where the real impedance information of the cathode would be masked by the sum of both the anode film resistance response and the unavoidable inductive loop signal. The three-electrode case enables efficient accurate observations on individual electrodes, thus facilitating abundant and useful information acquisition. Consequently, devices with a sufficient accuracy, rational simulation models, and advanced three-electrode cells are distinctly illustrated as standardized criterion/paradigm for EIS characterizations, which are essentially important for electrode and interface modifications in LIBs.
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Affiliation(s)
- Baodan Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Lingling Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Yiming Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Xiaotong Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Yu Qiao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Shi-Gang Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
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8
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Hu Z, Huang Q, Cai W, Zeng Z, Chen K, Sun Y, Kong Q, Feng W, Wang K, Wu Z, Song Y, Guo X. Research Progress on Enhancing the Performance of High Nickel Single Crystal Cathode Materials for Lithium-Ion Batteries. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c04021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Zhihua Hu
- School of Mechanical Engineering, Chengdu University, Chengdu610106, P. R. China
| | - Qingke Huang
- School of Mechanical Engineering, Chengdu University, Chengdu610106, P. R. China
| | - Wenqin Cai
- School of Mechanical Engineering, Chengdu University, Chengdu610106, P. R. China
| | - Zeng Zeng
- School of Mechanical Engineering, Chengdu University, Chengdu610106, P. R. China
| | - Kai Chen
- School of Mechanical Engineering, Chengdu University, Chengdu610106, P. R. China
| | - Yan Sun
- School of Mechanical Engineering, Chengdu University, Chengdu610106, P. R. China
| | - Qingquan Kong
- School of Mechanical Engineering, Chengdu University, Chengdu610106, P. R. China
| | - Wei Feng
- School of Mechanical Engineering, Chengdu University, Chengdu610106, P. R. China
| | - Ke Wang
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou515031, P. R. China
| | - Zhenguo Wu
- School of Chemical Engineering, Sichuan University, Chengdu610065, P. R. China
| | - Yang Song
- School of Chemical Engineering, Sichuan University, Chengdu610065, P. R. China
| | - Xiaodong Guo
- School of Chemical Engineering, Sichuan University, Chengdu610065, P. R. China
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9
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Dong Y, Li J. Oxide Cathodes: Functions, Instabilities, Self Healing, and Degradation Mitigations. Chem Rev 2023; 123:811-833. [PMID: 36398933 DOI: 10.1021/acs.chemrev.2c00251] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Recent progress in high-energy-density oxide cathodes for lithium-ion batteries has pushed the limits of lithium usage and accessible redox couples. It often invokes hybrid anion- and cation-redox (HACR), with exotic valence states such as oxidized oxygen ions under high voltages. Electrochemical cycling under such extreme conditions over an extended period can trigger various forms of chemical, electrochemical, mechanical, and microstructural degradations, which shorten the battery life and cause safety issues. Mitigation strategies require an in-depth understanding of the underlying mechanisms. Here we offer a systematic overview of the functions, instabilities, and peculiar materials behaviors of the oxide cathodes. We note unusual anion and cation mobilities caused by high-voltage charging and exotic valences. It explains the extensive lattice reconstructions at room temperature in both good (plasticity and self-healing) and bad (phase change, corrosion, and damage) senses, with intriguing electrochemomechanical coupling. The insights are critical to the understanding of the unusual self-healing phenomena in ceramics (e.g., grain boundary sliding and lattice microcrack healing) and to novel cathode designs and degradation mitigations (e.g., suppressing stress-corrosion cracking and constructing reactively wetted cathode coating). Such mixed ionic-electronic conducting, electrochemically active oxides can be thought of as almost "metalized" if at voltages far from the open-circuit voltage, thus differing significantly from the highly insulating ionic materials in electronic transport and mechanical behaviors. These characteristics should be better understood and exploited for high-performance energy storage, electrocatalysis, and other emerging applications.
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Affiliation(s)
- Yanhao Dong
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing100084, China
| | - Ju Li
- Department of Nuclear Science and Engineering and Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts02139, United States
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10
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Oishi A, Tatara R, Togo E, Inoue H, Yasuno S, Komaba S. Sulfated Alginate as an Effective Polymer Binder for High-Voltage LiNi 0.5Mn 1.5O 4 Electrodes in Lithium-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2022; 14:51808-51818. [PMID: 36351777 PMCID: PMC9706501 DOI: 10.1021/acsami.2c11695] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 10/07/2022] [Indexed: 05/28/2023]
Abstract
Although the increasing demand for high-energy-density lithium-ion batteries (LIBs) has inspired extensive research on high-voltage cathode materials, such as LiNi0.5Mn1.5O4 (LNMO), their commercialization is hindered by problems associated with the decomposition of common carbonate solvent-based electrolytes at elevated voltages. To address these problems, we prepared high-voltage LNMO composite electrodes using five polymer binders (two sulfated and two nonsulfated alginate binders and a poly(vinylidene fluoride) conventional binder) and compared their electrochemical performances at ∼5 V vs Li/Li+. The effects of binder type on electrode performance were probed by analyzing cycled electrodes using soft/hard X-ray photoelectron spectroscopy and scanning transmission electron microscopy. The best-performing sulfated binder, sulfated alginate, uniformly covers the surface of LNMO and increased its affinity for the electrolyte. The electrolyte decomposition products generated in the initial charge-discharge cycle on the alginate-covered electrode participated in the formation of a protective passivation layer that suppressed further decomposition during subsequent cycles, resulting in enhanced cycling and rate performances. The results of this study provide a basis for the cost-effective and technically undemanding fabrication of high-energy-density LIBs.
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Affiliation(s)
- Asako Oishi
- Department
of Applied Chemistry, Tokyo University of
Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
| | - Ryoichi Tatara
- Department
of Applied Chemistry, Tokyo University of
Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
| | - Eiichi Togo
- Tosoh
Corp., 1-8 Kasumi, Yokkaichi-Shi, Mie 510-8540, Japan
| | - Hiroshi Inoue
- Tosoh
Corp., 1-8 Kasumi, Yokkaichi-Shi, Mie 510-8540, Japan
| | - Satoshi Yasuno
- Japan
Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-gun, Hyogo 679-5198, Japan
| | - Shinichi Komaba
- Department
of Applied Chemistry, Tokyo University of
Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
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11
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Wang P, Zhang J, Xu F, Wang J, Li J, Shen Y, Li C, Cui X, Li S. Improving electric field strength of interfacial electric double layer and cycle stability of Li-ion battery via LiCl additive. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Huang C, Wilson MD, Suzuki K, Liotti E, Connolley T, Magdysyuk OV, Collins S, Van Assche F, Boone MN, Veale MC, Lui A, Wheater R, Leung CLA. 3D Correlative Imaging of Lithium Ion Concentration in a Vertically Oriented Electrode Microstructure with a Density Gradient. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2105723. [PMID: 35404540 PMCID: PMC9165496 DOI: 10.1002/advs.202105723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 03/10/2022] [Indexed: 06/14/2023]
Abstract
The performance of Li+ ion batteries (LIBs) is hindered by steep Li+ ion concentration gradients in the electrodes. Although thick electrodes (≥300 µm) have the potential for reducing the proportion of inactive components inside LIBs and increasing battery energy density, the Li+ ion concentration gradient problem is exacerbated. Most understanding of Li+ ion diffusion in the electrodes is based on computational modeling because of the low atomic number (Z) of Li. There are few experimental methods to visualize Li+ ion concentration distribution of the electrode within a battery of typical configurations, for example, coin cells with stainless steel casing. Here, for the first time, an interrupted in situ correlative imaging technique is developed, combining novel, full-field X-ray Compton scattering imaging with X-ray computed tomography that allows 3D pixel-by-pixel mapping of both Li+ stoichiometry and electrode microstructure of a LiNi0.8 Mn0.1 Co0.1 O2 cathode to correlate the chemical and physical properties of the electrode inside a working coin cell battery. An electrode microstructure containing vertically oriented pore arrays and a density gradient is fabricated. It is shown how the designed electrode microstructure improves Li+ ion diffusivity, homogenizes Li+ ion concentration through the ultra-thick electrode (1 mm), and improves utilization of electrode active materials.
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Affiliation(s)
- Chun Huang
- Department of MaterialsImperial College LondonLondonSW7 2AZUK
- The Faraday InstitutionQuad One, Becquerel Ave, Harwell CampusDidcotOX11 0RAUK
- Department of MaterialsUniversity of OxfordOxfordOX1 3PHUK
- Research Complex at HarwellRutherford Appleton LaboratoryDidcotOxfordshireOX11 0FAUK
- Department of EngineeringKing's College LondonLondonWC2R 2LSUK
| | - Matthew D. Wilson
- STFC‐UKRIRutherford Appleton LaboratoryHarwell CampusDidcotOxfordshireOX11 0QXUK
| | - Kosuke Suzuki
- Faculty of Science and TechnologyGunma University1‐5‐1 Tenjin‐cho, KiryuGunma376‐8515Japan
| | - Enzo Liotti
- Department of MaterialsUniversity of OxfordOxfordOX1 3PHUK
| | - Thomas Connolley
- Diamond Light SourceHarwell Science and Innovation CampusDidcotOxfordshireOX11 0QXUK
| | - Oxana V. Magdysyuk
- Diamond Light SourceHarwell Science and Innovation CampusDidcotOxfordshireOX11 0QXUK
| | - Stephen Collins
- Diamond Light SourceHarwell Science and Innovation CampusDidcotOxfordshireOX11 0QXUK
| | - Frederic Van Assche
- Radiation PhysicsDepartment of Physics and AstronomyFaculty of SciencesGhent UniversityProeftuinstraat 86/N12Gent9000Belgium
| | - Matthieu N. Boone
- Radiation PhysicsDepartment of Physics and AstronomyFaculty of SciencesGhent UniversityProeftuinstraat 86/N12Gent9000Belgium
| | - Matthew C. Veale
- STFC‐UKRIRutherford Appleton LaboratoryHarwell CampusDidcotOxfordshireOX11 0QXUK
| | - Andrew Lui
- Department of MaterialsUniversity of OxfordOxfordOX1 3PHUK
| | - Rhian‐Mair Wheater
- STFC‐UKRIRutherford Appleton LaboratoryHarwell CampusDidcotOxfordshireOX11 0QXUK
| | - Chu Lun Alex Leung
- Research Complex at HarwellRutherford Appleton LaboratoryDidcotOxfordshireOX11 0FAUK
- Department of Mechanical EngineeringUniversity College LondonLondonWC1E 7JEUK
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13
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Chen Y, Xu X, Gao L, Yu G, Kapitanova OO, Xiong S, Volkov VS, Song Z, Liu Y. Two Birds with One Stone: Using Indium Oxide Surficial Modification to Tune Inner Helmholtz Plane and Regulate Nucleation for Dendrite-free Lithium Anode. SMALL METHODS 2022; 6:e2200113. [PMID: 35277941 DOI: 10.1002/smtd.202200113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/18/2022] [Indexed: 06/14/2023]
Abstract
Lithium metal has been considered as the most promising anode material due to its distinguished specific capacity of 3860 mAh g-1 and the lowest reduction potential of -3.04 V versus the Standard Hydrogen Electrode. However, the practicalization of Li-metal batteries (LMBs) is still challenged by the dendritic growth of Li during cycling, which is governed by the surface properties of the electrodepositing substrate. Herein, a surface modification with indium oxide on the copper current collector via magnetron sputtering, which can be spontaneously lithiated to form a composite of lithium indium oxide and Li-In alloy, is proposed. Thus, the growth of Li dendrites is effectively suppressed via regulating the inner Helmholtz plane modified with LiInO2 to foster the desolvation of Li-ion and induce the nucleation of Li-metal in two-dimensions through electro-crystallization with Li-In alloy. Using the In2 O3 modification, the Li-metal anode exhibits outstanding cyclic stability, and LMBs with lithium cobalt oxide cathode present excellent capacity retention (above 80% over 600 cycles). Enlightening, the scalable magnetron sputtering method reported here paves a novel way to accelerate the practical application of the Li anode in LMBs to pursue higher energy density.
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Affiliation(s)
- Yaqi Chen
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Xieyu Xu
- Faculty of Materials Science, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Leiwen Gao
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Guangyong Yu
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Olesya O Kapitanova
- Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, 141701, Russia
- Autonomous Noncommercial Organization "ID&AS: Inter-Disciplinary & Advanced Studies Center", Moscow, 127495, Russia
| | - Shizhao Xiong
- Department of Physics, Chalmers University of Technology, 41296, Göteborg, Sweden
| | - Valentyn S Volkov
- Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, 141701, Russia
- Autonomous Noncommercial Organization "ID&AS: Inter-Disciplinary & Advanced Studies Center", Moscow, 127495, Russia
| | - Zhongxiao Song
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Yangyang Liu
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
- Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, 141701, Russia
- Autonomous Noncommercial Organization "ID&AS: Inter-Disciplinary & Advanced Studies Center", Moscow, 127495, Russia
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14
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Aktekin B, Hernández G, Younesi R, Brandell D, Edström K. Concentrated LiFSI-Ethylene Carbonate Electrolytes and Their Compatibility with High-Capacity and High-Voltage Electrodes. ACS APPLIED ENERGY MATERIALS 2022; 5:585-595. [PMID: 35098043 PMCID: PMC8790720 DOI: 10.1021/acsaem.1c03096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 12/27/2021] [Indexed: 06/14/2023]
Abstract
The unusual physical and chemical properties of electrolytes with excessive salt contents have resulted in rising interest in highly concentrated electrolytes, especially for their application in batteries. Here, we report strikingly good electrochemical performance in terms of conductivity and stability for a binary electrolyte system, consisting of lithium bis(fluorosulfonyl)imide (LiFSI) salt and ethylene carbonate (EC) solvent. The electrolyte is explored for different cell configurations spanning both high-capacity and high-voltage electrodes, which are well known for incompatibilities with conventional electrolyte systems: Li metal, Si/graphite composites, LiNi0.33Mn0.33Co0.33O2 (NMC111), and LiNi0.5Mn1.5O4 (LNMO). As compared to a LiTFSI counterpart as well as a common LP40 electrolyte, it is seen that the LiFSI:EC electrolyte system is superior in Li-metal-Si/graphite cells. Moreover, in the absence of Li metal, it is possible to use highly concentrated electrolytes (e.g., 1:2 salt:solvent molar ratio), and a considerable improvement on the electrochemical performance of NMC111-Si/graphite cells was achieved with the LiFSI:EC 1:2 electrolyte both at the room temperature and elevated temperature (55 °C). Surface characterization with scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) showed the presence of thicker surface film formation with the LiFSI-based electrolyte as compared to the reference electrolyte (LP40) for both positive and negative electrodes, indicating better passivation ability of such surface films during extended cycling. Despite displaying good stability with the NMC111 positive electrode, the LiFSI-based electrolyte showed less compatibility with the high-voltage spinel LNMO electrode (∼4.7 V vs Li+/Li).
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15
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Zhou M, Zhao J, Wang X, Shen J, Yang JL, Tang W, Deng Y, Zhao SX, Liu R. Enhanced stability of vanadium-doped Li 1.2Ni 0.16Co 0.08Mn 0.56O 2 cathode materials for superior Li-ion batteries. RSC Adv 2022; 12:32825-32833. [DOI: 10.1039/d2ra05126e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 11/10/2022] [Indexed: 11/18/2022] Open
Abstract
The high-valence V5+ can improve the discharge capacity and coulomb efficiency and inhibit the voltage attenuation of cathode materials.
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Affiliation(s)
- Miaomiao Zhou
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Jianjun Zhao
- State Key Laboratory of Chemical Resources Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Xiaodong Wang
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Ji Shen
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Jin-Lin Yang
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
- School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - Wenhao Tang
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Yirui Deng
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Shi-Xi Zhao
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Ruiping Liu
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
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16
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Joraleechanchai N, Donthongkwa R, Phattharasupakun N, Duangdangchote S, Chiochan P, Homlamai K, Sawangphruk M. Free carbonate-based molecules in the electrolyte leading to severe safety concerns of Ni-rich Li-ion batteries. Chem Commun (Camb) 2021; 58:779-782. [PMID: 34874375 DOI: 10.1039/d1cc06694c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The safety of Li-ion batteries is one of the most important factors, if not the most, determining their practical applications. We have found that free carbonate-based solvent molecules in the hybrid electrolyte system can cause severe safety concerns. Mixing ionic liquids with a carbonate-based solvent as the co-solvent at a fixed salt concentration of 1 M LiPF6 can lead to free carbonate-based molecules causing poor charge storage performance and safety concerns.
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Affiliation(s)
- Nattanon Joraleechanchai
- Centre of Excellence for Energy Storage Technology (CEST), Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand.
| | - Ruttiyakorn Donthongkwa
- Centre of Excellence for Energy Storage Technology (CEST), Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand.
| | - Nutthaphon Phattharasupakun
- Centre of Excellence for Energy Storage Technology (CEST), Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand.
| | - Salatan Duangdangchote
- Centre of Excellence for Energy Storage Technology (CEST), Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand.
| | - Poramane Chiochan
- Centre of Excellence for Energy Storage Technology (CEST), Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand.
| | - Kan Homlamai
- Centre of Excellence for Energy Storage Technology (CEST), Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand.
| | - Montree Sawangphruk
- Centre of Excellence for Energy Storage Technology (CEST), Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand.
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17
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Fan X, Wang C. High-voltage liquid electrolytes for Li batteries: progress and perspectives. Chem Soc Rev 2021; 50:10486-10566. [PMID: 34341815 DOI: 10.1039/d1cs00450f] [Citation(s) in RCA: 130] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Since the advent of the Li ion batteries (LIBs), the energy density has been tripled, mainly attributed to the increase of the electrode capacities. Now, the capacity of transition metal oxide cathodes is approaching the limit due to the stability limitation of the electrolytes. To further promote the energy density of LIBs, the most promising strategies are to enhance the cut-off voltage of the prevailing cathodes or explore novel high-capacity and high-voltage cathode materials, and also replacing the graphite anode with Si/Si-C or Li metal. However, the commercial ethylene carbonate (EC)-based electrolytes with relatively low anodic stability of ∼4.3 V vs. Li+/Li cannot sustain high-voltage cathodes. The bottleneck restricting the electrochemical performance in Li batteries has veered towards new electrolyte compositions catering for aggressive next-generation cathodes and Si/Si-C or Li metal anodes, since the oxidation-resistance of the electrolytes and the in situ formed cathode electrolyte interphase (CEI) layers at the high-voltage cathodes and solid electrolyte interphase (SEI) layers on anodes critically control the electrochemical performance of these high-voltage Li batteries. In this review, we present a comprehensive and in-depth overview on the recent advances, fundamental mechanisms, scientific challenges, and design strategies for the novel high-voltage electrolyte systems, especially focused on stability issues of the electrolytes, the compatibility and interactions between the electrolytes and the electrodes, and reaction mechanisms. Finally, novel insights, promising directions and potential solutions for high voltage electrolytes associated with effective SEI/CEI layers are proposed to motivate revolutionary next-generation high-voltage Li battery chemistries.
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Affiliation(s)
- Xiulin Fan
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Chunsheng Wang
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, USA.
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18
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Lundin F, Aguilera L, Hansen HW, Lages S, Labrador A, Niss K, Frick B, Matic A. Structure and dynamics of highly concentrated LiTFSI/acetonitrile electrolytes. Phys Chem Chem Phys 2021; 23:13819-13826. [PMID: 34195732 DOI: 10.1039/d1cp02006d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High salt concentration has been shown to induce increased electrochemical stability in organic solvent-based electrolytes. Accompanying the change in bulk properties is a structural ordering on mesoscopic length scales and changes in the ion transport mechanism have also been suggested. Here we investigate the local structure and dynamics in highly concentrated acetonitrile electrolytes as a function of salt concentration. Already at low concentrations ordering on microscopic length scales in the electrolytes is revealed by small angle X-ray scattering, as a result of correlations of Li+ coordinating clusters. For higher salt concentrations a charge alternation-like ordering is found as anions start to take part in the solvation. Results from quasi-elastic neutron spectroscopy reveal a jump diffusion dynamical process with jump lengths virtually independent of both temperature and Li-salt concentration. The jump can be envisaged as dissociation of a solvent molecule or anion from a particular Li+ solvation structure. The residence time, 50-800 ps, between the jumps is found to be highly temperature and Li-salt concentration dependent, with shorter residence times for higher temperature and lower concentrations. The increased residence time at high Li-salt concentration can be attributed to changes in the interaction of the solvation shell as a larger fraction of TFSI anions take part in the solvation, forming more stable solvation shells.
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Affiliation(s)
- Filippa Lundin
- Department of Physics, Materials Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden.
| | - Luis Aguilera
- Department of Physics, Materials Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden. and Energy and Installation, Volvo Cars Corporation, Göteborg, Sweden
| | - Henriette Wase Hansen
- Department of Physics, Materials Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden. and Glass and Time, IMUFA, Department of Science and Environment, Roskilde University, Postbox 260, DK-4000 Roskilde, Denmark and Institut Laue-Langevin, 71 avenue des Martyrs, CS 20156, 38042 Grenoble Cedex 9, France
| | - Sebastian Lages
- Department of Physics, Materials Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden. and MaxIV Laboratory, Fotongatan 2, SE 224 84 Lund, Sweden
| | - Ana Labrador
- MaxIV Laboratory, Fotongatan 2, SE 224 84 Lund, Sweden
| | - Kristine Niss
- Glass and Time, IMUFA, Department of Science and Environment, Roskilde University, Postbox 260, DK-4000 Roskilde, Denmark
| | - Bernhard Frick
- Institut Laue-Langevin, 71 avenue des Martyrs, CS 20156, 38042 Grenoble Cedex 9, France
| | - Aleksandar Matic
- Department of Physics, Materials Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden.
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19
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Yu Y, Karayaylali P, Giordano L, Corchado-García J, Hwang J, Sokaras D, Maglia F, Jung R, Gittleson FS, Shao-Horn Y. Probing Depth-Dependent Transition-Metal Redox of Lithium Nickel, Manganese, and Cobalt Oxides in Li-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2020; 12:55865-55875. [PMID: 33283495 DOI: 10.1021/acsami.0c16285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Layered lithium nickel, manganese, and cobalt oxides (NMC) are among the most promising commercial positive electrodes in the past decades. Understanding the detailed surface and bulk redox processes of Ni-rich NMC can provide useful insights into material design options to boost reversible capacity and cycle life. Both hard X-ray absorption (XAS) of metal K-edges and soft XAS of metal L-edges collected from charged LiNi0.6Mn0.2Co0.2O2 (NMC622) and LiNi0.8Mn0.1Co0.1O2 (NMC811) showed that the charge capacity up to removing ∼0.7 Li/f.u. was accompanied with Ni oxidation in bulk and near the surface (up to 100 nm). Of significance to note is that nickel oxidation is primarily responsible for the charge capacity of NMC622 and 811 up to similar lithium removal (∼0.7 Li/f.u.) albeit charged to different potentials, beyond which was followed by Ni reduction near the surface (up to 100 nm) due to oxygen release and electrolyte parasitic reactions. This observation points toward several new strategies to enhance reversible redox capacities of Ni-rich and/or Co-free electrodes for high-energy Li-ion batteries.
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Affiliation(s)
| | | | | | | | | | - Dimosthenis Sokaras
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | | | - Roland Jung
- BMW Group, Petuelring 130, 80788 München, Germany
| | - Forrest S Gittleson
- BMW Group Technology Office USA, 2606 Bayshore Parkway, Mountain View, California 94043, United States
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