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Sun C, Zhao B, Jing ZF, Zhang H, Wen Q, Chen HZ, Zhang XH, Zheng JC. Suppressed Electrolyte Decomposition Behavior to Improve Cycling Performance of LiCoO 2 under 4.6 V through the Regulation of Interfacial Adsorption Forces. Adv Sci (Weinh) 2024:e2309657. [PMID: 38654462 DOI: 10.1002/advs.202309657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 03/16/2024] [Indexed: 04/26/2024]
Abstract
Alleviating the decomposition of the electrolyte is of great significance to improving the cycle stability of cathodes, especially for LiCoO2 (LCO), its volumetric energy density can be effectively promoted by increasing the charge cutoff voltage to 4.6 V, thereby supporting the large-scale application of clean energy. However, the rapid decomposition of the electrolyte under 4.6 V conditions not only loses the transport carrier for lithium ion, but also produces HF and insulators that destroy the interface of LCO and increase impedance. In this work, the decomposition of electrolyte is effectively suppressed by changing the adsorption force between LCO interface and EC. Density functional theory illustrates the LCO coated with lower electronegativity elements has a weaker adsorption force with the electrolyte, the adsorption energy between LCO@Mg and EC (0.49 eV) is weaker than that of LCO@Ti (0.73 eV). Meanwhile, based on the results of time of flight secondary ion mass spectrometry, conductivity-atomic force microscopy, in situ differential electrochemical mass spectrometry, soft X-ray absorption spectroscopy, and nuclear magnetic resonance, as the adsorption force increases, the electrolyte decomposes more seriously. This work provides a new perspective on the interaction between electrolyte and the interface of cathode and further improves the understanding of electrolyte decomposition.
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Affiliation(s)
- Chao Sun
- School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha, 410083, China
- National Energy Metal Resources and New Materials Key Laboratory, Central South University, Changsha, 410083, China
| | - Bing Zhao
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, 810008, China
| | - Zhuan-Fang Jing
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, 810008, China
| | - Hao Zhang
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Qing Wen
- School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha, 410083, China
- National Energy Metal Resources and New Materials Key Laboratory, Central South University, Changsha, 410083, China
| | - He-Zhang Chen
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, China
| | - Xia-Hui Zhang
- School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha, 410083, China
- National Energy Metal Resources and New Materials Key Laboratory, Central South University, Changsha, 410083, China
| | - Jun-Chao Zheng
- School of Metallurgy and Environment, Central South University, Changsha, Hunan, 410083, China
- Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha, 410083, China
- National Energy Metal Resources and New Materials Key Laboratory, Central South University, Changsha, 410083, China
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2
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Chen X, Zhang W, Zhang C, Guo Y, Yu A, Mei S, Yao CJ. Electropolymerization of Donor-Acceptor Conjugated Polymer for Efficient Dual-Ion Storage. Adv Sci (Weinh) 2024:e2310239. [PMID: 38582519 DOI: 10.1002/advs.202310239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 03/13/2024] [Indexed: 04/08/2024]
Abstract
Rationally designed organic redox-active materials have attracted numerous interests due to their excellent electrochemical performance and reasonable sustainability. However, they often suffer from poor cycling stability, intrinsic low operating potential, and poor rate performance. Herein, a novel Donor-Acceptor (D-A) bipolar polymer with n-type pyrene-4,5,9,10-tetraone unit storing Li cations and p-type carbazole unit which attracts anions and provides polymerization sites is employed as a cathode for lithium-ion batteries through in situ electropolymerization. The multiple redox reactions and boosted kinetics by the D-A structure lead to excellent electrochemical performance of a high discharge capacity of 202 mA h g-1 at 200 mA g-1, impressive working potential (2.87 and 4.15 V), an outstanding rate capability of 119 mA h g-1 at 10 A g-1 and a noteworthy energy density up to 554 Wh kg-1. This strategy has significant implications for the molecule design of bipolar organic cathode for high cycling stability and high energy density.
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Affiliation(s)
- Xianhe Chen
- State Key Laboratory of Explosion Science and Safety Protection, School of Mechatronical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Weisheng Zhang
- State Key Laboratory of Explosion Science and Safety Protection, School of Mechatronical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Chenxing Zhang
- State Key Laboratory of Explosion Science and Safety Protection, School of Mechatronical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Yuxuan Guo
- State Key Laboratory of Explosion Science and Safety Protection, School of Mechatronical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Ao Yu
- State Key Laboratory of Explosion Science and Safety Protection, School of Mechatronical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Shilin Mei
- State Key Laboratory of Explosion Science and Safety Protection, School of Mechatronical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Chang-Jiang Yao
- State Key Laboratory of Explosion Science and Safety Protection, School of Mechatronical Engineering, Beijing Institute of Technology, Beijing, 100081, China
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3
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Duan J, Wang F, Huang M, Yang M, Li S, Zhang G, Xu C, Tang C, Liu H. High-Performance Single-Crystal Lithium-Rich Layered Oxides Cathode Materials via Na 2WO 4-Assisted Sintering. Small 2024; 20:e2307998. [PMID: 38010124 DOI: 10.1002/smll.202307998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/24/2023] [Indexed: 11/29/2023]
Abstract
Single-crystal lithium-rich layered oxides (LLOs) with excellent mechanical properties can enhance their crystal structure stability. However, the conventional methods for preparing single-crystal LLOs, require large amounts of molten salt additives, involve complicated washing steps, and increase the difficulty of large-scale production. In this study, a sodium tungstate (Na2WO4)-assisted sintering method is proposed to fabricate high-performance single-crystal LLOs cathode materials without large amounts of additives and additional washing steps. During the sintering process, Na2WO4 promotes particle growth and forms a protective coating on the surface of LLOs particles, effectively suppressing the side reactions at the cathode/electrolyte interface. Additionally, trace amounts of Na and W atoms are doped into the LLOs lattice via gradient doping. Experimental results and theoretical calculations indicate that Na and W doping stabilizes the crystal structure and enhances the Li+ ions diffusion rate. The prepared single-crystal LLOs exhibit outstanding capacity retention of 82.7% (compared to 65.0%, after 200 cycles at 1 C) and a low voltage decay rate of 0.76 mV per cycle (compared to 1.80 mV per cycle). This strategy provides a novel pathway for designing the next-generation high-performance cathode materials for Lithium-ion batteries (LIBs).
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Affiliation(s)
- Jidong Duan
- Chengdu Development Center of Science and Technology of CAEP, Chengdu, Sichuan, 610207, P. R. China
- Institute of Materials, China Academy of Engineering Physics, Mianyang, Sichuan, 621907, P. R. China
| | - Fengqi Wang
- Chengdu Development Center of Science and Technology of CAEP, Chengdu, Sichuan, 610207, P. R. China
| | - Mengjie Huang
- Chengdu Development Center of Science and Technology of CAEP, Chengdu, Sichuan, 610207, P. R. China
| | - Maoxia Yang
- Chengdu Development Center of Science and Technology of CAEP, Chengdu, Sichuan, 610207, P. R. China
| | - Shaomin Li
- Chengdu Development Center of Science and Technology of CAEP, Chengdu, Sichuan, 610207, P. R. China
| | - Gen Zhang
- Chengdu Development Center of Science and Technology of CAEP, Chengdu, Sichuan, 610207, P. R. China
| | - Chen Xu
- Institute of Materials, China Academy of Engineering Physics, Mianyang, Sichuan, 621907, P. R. China
| | - Changyu Tang
- Chengdu Development Center of Science and Technology of CAEP, Chengdu, Sichuan, 610207, P. R. China
| | - Hao Liu
- Chengdu Development Center of Science and Technology of CAEP, Chengdu, Sichuan, 610207, P. R. China
- Sichuan New Li-idea Energy Science and Technology Co., LTD, Shehong, Sichuan, 629200, P. R. China
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4
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Wu K, Ran P, Wang B, Wang F, Zhao J, Zhao E. Diffusion-Optimized Long Lifespan 4.6 V LiCoO 2: Homogenizing Cycled Bulk-To-Surface Li Concentration with Reduced Structure Stress. Adv Sci (Weinh) 2024; 11:e2308258. [PMID: 38291813 PMCID: PMC11005714 DOI: 10.1002/advs.202308258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/17/2023] [Indexed: 02/01/2024]
Abstract
Increasing the charging cut-off voltage (e.g., 4.6 V) to extract more Li ions are pushing the LiCoO2 (LCO) cathode to achieve a higher energy density. However, an inhomogeneous cycled bulk-to-surface Li distribution, which is closely associated with the enhanced extracted Li ions, is usually ignored, and severely restricts the design of long lifespan high voltage LCO. Here, a strategy by constructing an artificial solid-solid Li diffusion environment on LCO's surface is proposed to achieve a homogeneous bulk-to-surface Li distribution upon cycling. The diffusion optimized LCO not only shows a highly reversible capacity of 212 mA h g-1 but also an ultrahigh capacity retention of 80% over 600 cycles at 4.6 V. Combined in situ X-ray diffraction measurements and stress-evolution simulation analysis, it is revealed that the superior 4.6 V long-cycled stability is ascribed to a reduced structure stress leaded by the homogeneous bulk-to-surface Li diffusion. This work broadens approaches for the design of highly stable layered oxide cathodes with low ion-storage structure stress.
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Affiliation(s)
- Kang Wu
- Songshan Lake Materials LaboratoryDongguan523808P. R. China
- Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing100190P. R. China
| | - Peilin Ran
- Songshan Lake Materials LaboratoryDongguan523808P. R. China
- Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing100190P. R. China
| | - Baotian Wang
- Institute of High Energy PhysicsChinese Academy of SciencesBeijing100049P. R. China
- Spallation Neutron Source Science CenterDongguanGuangdong523803P. R. China
| | - Fangwei Wang
- Songshan Lake Materials LaboratoryDongguan523808P. R. China
- Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing100190P. R. China
- Spallation Neutron Source Science CenterDongguanGuangdong523803P. R. China
| | - Jinkui Zhao
- Songshan Lake Materials LaboratoryDongguan523808P. R. China
- Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing100190P. R. China
| | - Enyue Zhao
- Songshan Lake Materials LaboratoryDongguan523808P. R. China
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5
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Zhang L, Qi L, Liu J, He F, Wang N, Li Y. Microcrystalline Nanofiber Electrode with Adaptive Intrinsic Structure and Microscopic Interface. Small 2024; 20:e2308905. [PMID: 37988690 DOI: 10.1002/smll.202308905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 10/27/2023] [Indexed: 11/23/2023]
Abstract
A strategy of microcrystalline aggregation is proposed to fabricate energy storage electrode with outstanding capacity and stability. Carbon-rich electrode (BDTG) functionalized with benzo[1,2-b:4,5-b']dithiophene units and butadiyne segments are prepared. The linear conjugate chains pack as microcrystalline nanofibers on nanoscale, which further aggregates to form a porous interpenetrating network. The microcrystalline aggregation feature of BDTG exhibit stable structure during long cycling test, revealing the following advantage in structure and property. The stretchable butadiyne linker facilitates reversible adsorption and desorption of Li with the aid of adjacent sulfur heteroatom. The alkyne-alkene transition exhibits intrinsic structural stability of microcrystalline region in BDTG electrodes. Meanwhile, alkynyl groups and sulfur heteroatoms on the surface of BDTG nanofibers participate in the formation of microscopic interface, providing a stable interfacial contact between BDTG electrodes and adjacent electrolyte. As a proof-of-concept, BDTG-based electrode shows high capacity (1430 mAh g-1 at 50 mA g-1) and excellent cycle performance (8000 cycles under 5 A g-1) in half-cell of lithium-ion batteries, and a reversible capacity of 120 mAh g-1 is obtained under the current density of 2 C in full-cell. This work shows microcrystalline aggregation is beneficial to realize adaptive intrinsic structure and interface contact during the charge-discharge process.
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Affiliation(s)
- Luwei Zhang
- Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, Science Center for Material Creation and Energy Conversion, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Lu Qi
- Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, Science Center for Material Creation and Energy Conversion, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Jingyi Liu
- Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, Science Center for Material Creation and Energy Conversion, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Feng He
- CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Ning Wang
- Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, Science Center for Material Creation and Energy Conversion, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Yuliang Li
- Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, Science Center for Material Creation and Energy Conversion, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
- CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
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6
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Lee PK, Tahmasebi MH, Ran S, Boles ST, Yu DYW. Leveraging Titanium to Enable Silicon Anodes in Lithium-Ion Batteries. Small 2018; 14:e1802051. [PMID: 30350548 DOI: 10.1002/smll.201802051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 08/02/2018] [Indexed: 06/08/2023]
Abstract
Silicon is a promising anode material for lithium-ion batteries because of its high gravimetric/volumetric capacities and low lithiation/delithiation voltages. However, it suffers from poor cycling stability due to drastic volume expansion (>300%) when it alloys with lithium, leading to structural disintegration upon lithium removal. Here, it is demonstrated that titanium atoms inside the silicon matrix can act as an atomic binding agent to hold the silicon atoms together during lithiation and mend the structure after delithiation. Direct evidence from in situ dilatometry of cosputtered silicon-titanium thin films reveals significantly smaller electrode thickness change during lithiation, compared to a pure silicon thin film. In addition, the thickness change is fully reversible with lithium extraction, and ex situ post-mortem microscopy shows that film cracking is suppressed. Furthermore, Raman spectroscopy measurements indicate that the Si-Ti interaction remains intact after cycling. Optimized Si-Ti thin films can deliver a stable capacity of 1000 mAh g-1 at a current of 2000 mA g-1 for more than 300 cycles, demonstrating the effectiveness of titanium in stabilizing the material structure. A full cell with a Si-Ti anode and LiFePO4 cathode is demonstrated, which further validates the readiness of the technology.
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Affiliation(s)
- Pui-Kit Lee
- School of Energy and Environment, Center of Super-Diamond and Advanced Films, City University of Hong Kong, Hong Kong, China
| | - Mohammad H Tahmasebi
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
| | - Sijia Ran
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
| | - Steven T Boles
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
| | - Denis Y W Yu
- School of Energy and Environment, Center of Super-Diamond and Advanced Films, City University of Hong Kong, Hong Kong, China
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7
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Dong Z, Zhang R, Ji D, Chernova NA, Karki K, Sallis S, Piper L, Whittingham MS. The Anode Challenge for Lithium-Ion Batteries: A Mechanochemically Synthesized Sn-Fe-C Composite Anode Surpasses Graphitic Carbon. Adv Sci (Weinh) 2016; 3:1500229. [PMID: 27812462 PMCID: PMC5067663 DOI: 10.1002/advs.201500229] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 11/15/2015] [Indexed: 05/28/2023]
Abstract
Carbon-based anodes are the key limiting factor in increasing the volumetric capacity of lithium-ion batteries. Tin-based composites are one alternative approach. Nanosized Sn-Fe-C anode materials are mechanochemically synthesized by reducing SnO with Ti in the presence of carbon. The optimum synthesis conditions are found to be 1:0.25:10 for initial ratio of SnO, Ti, and graphite with a total grinding time of 8 h. This optimized composite shows excellent extended cycling at the C/10 rate, delivering a first charge capacity as high as 740 mAh g-1 and 60% of which still remained after 170 cycles. The calculated volumetric capacity significantly exceeds that of carbon. It also exhibits excellent rate capability, delivering volumetric capacity higher than 1.6 Ah cc-1 over 140 cycles at the 1 C rate.
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Affiliation(s)
- Zhixin Dong
- Materials Science and Engineering State University of New York at Binghamton Binghamton NY 13902-6000 USA
| | - Ruibo Zhang
- Materials Science and Engineering State University of New York at Binghamton Binghamton NY 13902-6000 USA
| | - Dongsheng Ji
- Department of Chemistry State University of New York at Binghamton Binghamton NY 13902-6000 USA
| | - Natasha A Chernova
- Materials Science and Engineering State University of New York at Binghamton Binghamton NY 13902-6000 USA
| | - Khim Karki
- Materials Science and Engineering State University of New York at Binghamton Binghamton NY 13902-6000 USA; Center for Functional Nanomaterials Brookhaven National Laboratory Upton NY 11973 USA
| | - Shawn Sallis
- Materials Science and Engineering State University of New York at Binghamton Binghamton NY 13902-6000 USA
| | - Louis Piper
- Materials Science and Engineering State University of New York at Binghamton Binghamton NY 13902-6000 USA
| | - M Stanley Whittingham
- Materials Science and Engineering State University of New York at Binghamton Binghamton NY 13902-6000 USA; Department of Chemistry State University of New York at Binghamton Binghamton NY 13902-6000 USA
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8
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Li Q, Wei Q, Sheng J, Yan M, Zhou L, Luo W, Sun R, Mai L. Mesoporous Li 3VO 4/C Submicron-Ellipsoids Supported on Reduced Graphene Oxide as Practical Anode for High-Power Lithium-Ion Batteries. Adv Sci (Weinh) 2015; 2:1500284. [PMID: 27774378 PMCID: PMC5054844 DOI: 10.1002/advs.201500284] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Indexed: 05/05/2023]
Abstract
Despite the enormous efforts devoted to high-performance lithium-ion batteries (LIBs), the present state-of-the-art LIBs cannot meet the ever-increasing demands. With high theoretical capacity, fast ionic conductivity, and suitable charge/discharge plateaus, Li3VO4 shows great potential as the anode material for LIBs. However, it suffers from poor electronic conductivity. In this work, we present a novel composite material with mesoporous Li3VO4/C submicron-ellipsoids supported on rGO (LVO/C/rGO). The synthesized LVO/C/rGO exhibits a high reversible capacity (410 mAh g-1 at 0.25 C), excellent rate capability (230 mAh g-1 at 125 C), and outstanding long-cycle performance (82.5% capacity retention for 5000 cycles at 10 C). The impressive electrochemical performance reveals the great potential of the mesoporous LVO/C/rGO as a practical anode for high-power LIBs.
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Affiliation(s)
- Qidong Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P.R. China
| | - Qiulong Wei
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P.R. China
| | - Jinzhi Sheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P.R. China
| | - Mengyu Yan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P.R. China
| | - Liang Zhou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P.R. China
| | - Wen Luo
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P.R. China
| | - Ruimin Sun
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P.R. China
| | - Liqiang Mai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P.R. China
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9
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Zhao K, Liu F, Niu C, Xu W, Dong Y, Zhang L, Xie S, Yan M, Wei Q, Zhao D, Mai L. Graphene Oxide Wrapped Amorphous Copper Vanadium Oxide with Enhanced Capacitive Behavior for High-Rate and Long-Life Lithium-Ion Battery Anodes. Adv Sci (Weinh) 2015; 2:1500154. [PMID: 27980923 PMCID: PMC5115307 DOI: 10.1002/advs.201500154] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 06/29/2015] [Indexed: 05/19/2023]
Abstract
Graphene oxide-wrapped amorphous copper vanadium oxide is fabricated through a template-engaged redox reaction followed by vacuum dehydration. This material exhibits high reversible capacity, excellent rate capability, and out standing high-rate cyclability. The outstanding performance is attributed to the fast capacitive charge storage and the in situ formed copper with enhanced electrical conductivity.
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Affiliation(s)
- Kangning Zhao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China
| | - Fengning Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China
| | - Chaojiang Niu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China
| | - Wangwang Xu
- Department of Mechanical and Industrial Engineering Louisiana State University Baton Rouge LA 70830 USA
| | - Yifan Dong
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China
| | - Lei Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China
| | - Shaomei Xie
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China
| | - Mengyu Yan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China
| | - Qiulong Wei
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China
| | - Dongyuan Zhao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China
| | - Liqiang Mai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China
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10
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Yu Z, Song J, Gordin ML, Yi R, Tang D, Wang D. Phosphorus-Graphene Nanosheet Hybrids as Lithium-Ion Anode with Exceptional High-Temperature Cycling Stability. Adv Sci (Weinh) 2015; 2:1400020. [PMID: 27980903 PMCID: PMC5115279 DOI: 10.1002/advs.201400020] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Indexed: 05/20/2023]
Abstract
A red phosphorus-graphene nanosheet hybrid is reported as an anode material for lithium-ion batteries. Graphene nanosheets form a sea-like, highly electronically conductive matrix, where the island-like phosphorus particles are dispersed. Benefiting from this structure and properties of phosphorus, the hybrid delivers high initial capacity and exhibits promising retention at 60 °C.
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Affiliation(s)
- Zhaoxin Yu
- Department of Mechanical and Nuclear Engineering The Pennsylvania State University University Park PA 16802 USA
| | - Jiangxuan Song
- Department of Mechanical and Nuclear Engineering The Pennsylvania State University University Park PA 16802 USA
| | - Mikhail L Gordin
- Department of Mechanical and Nuclear Engineering The Pennsylvania State University University Park PA 16802 USA
| | - Ran Yi
- Department of Mechanical and Nuclear Engineering The Pennsylvania State University University Park PA 16802 USA
| | - Duihai Tang
- Department of Mechanical and Nuclear Engineering The Pennsylvania State University University Park PA 16802 USA
| | - Donghai Wang
- Department of Mechanical and Nuclear Engineering The Pennsylvania State University University Park PA 16802 USA
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