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Peng P, Chen Y, Zhou Q, Shen L, Wen Y, Du F, Chen Y, Zheng J. Structure engineering with sodium doping for cobalt-free Li-rich layered oxide toward improving electrochemical stability. J Colloid Interface Sci 2024; 676:847-858. [PMID: 39067220 DOI: 10.1016/j.jcis.2024.07.182] [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: 05/08/2024] [Revised: 07/17/2024] [Accepted: 07/20/2024] [Indexed: 07/30/2024]
Abstract
Structure engineering of the Li-rich layered cathodes to overcome insufficient structural stability and the rapid decay of capacity and voltage is crucial for commercializing of the materials for the lithium-ion batteries. Alkali metal element doping at the lithium sites has proven to be a feasible approach to boost the performance of the Li-rich layered oxides. Herein, the Na+-doping strategy in the lithium slabs is introduced to modify the structure of the cobalt-free layered Li-rich oxide, Li1.2Ni0.2Mn0.6O2. It is revealed that the doped Na+ ions can promote the activation of the Li2MnO3 phase, endowing the materials with high initial discharge capacity of 284.2 mAh g-1 at 0.1C. Due to the pillaring effect of the doped Na+ ions in the lithium slabs and the induced formation of oxygen vacancies, the electrochemical stability of the material is significantly improved, providing a capacity retention of 94.0 % after 100 cycles at 0.5C. The voltage decay per cycle is only 2.0 mV, less than 3.2 mV of the Li1.2Ni0.2Mn0.6O2. The results suggest that the facile strategy of introducing Na+ ions into the lithium slabs is an efficient approach for optimizing structure design of the Li-rich layered oxides for the lithium-ion batteries.
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Affiliation(s)
- Pai Peng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yu Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Qun Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Lina Shen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yali Wen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Fanghui Du
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, and School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Yuling Chen
- School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China
| | - Junwei Zheng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
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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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Duan J, Huang M, Yang M, Li S, Zhang G, Guo J, Yue B, Tang C, Liu H. Anion-Cation Dual-Ion Multisite Doping Stabilizes the Crystal Structure of Li-Rich Layered Oxides. ACS APPLIED MATERIALS & INTERFACES 2023; 15:37530-37539. [PMID: 37493507 DOI: 10.1021/acsami.3c07415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
Li-rich layered oxide (LLOs) cathode materials are gaining increasing attention as lithium-ion batteries (LIBs) pursue greater energy density. However, LLOs still suffer from severe capacity fading and voltage decay due to their unstable crystal structure. Hence, the anion-cation dual-ion multisite doping strategy based on Mg and S atoms is used to stabilize the crystal structures of LLOs. Mg substitutes Li atoms in the Li and transition-metal (TM) layers, while S atoms occupy tetrahedral interstitial sites and lattice O sites, all of which contribute to the crystal structure stability of LLOs. Theoretical calculations show that Mg/S dual-ion multisite doping successfully reduces the energy levels of the TM 3d-O 2p and isolated O 2p orbitals, which effectively stabilizes the lattice oxygen. Therefore, multisite-doped samples exhibit promising electrochemical performance. This strategy provides a new approach to enhance the crystal structure stability of LLOs for the design of high-energy-density Li-ion batteries.
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Affiliation(s)
- Jidong Duan
- Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu, Sichuan 610207, P. R. China
| | - Mengjie Huang
- Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu, Sichuan 610207, P. R. China
| | - Maoxia Yang
- Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu, Sichuan 610207, P. R. China
| | - Shaomin Li
- Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu, Sichuan 610207, P. R. China
| | - Gen Zhang
- Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu, Sichuan 610207, P. R. China
| | - Jianqiang Guo
- Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu, Sichuan 610207, P. R. China
| | - Bo Yue
- Sichuan New Li-idea Energy Science and Technology Co., LTD, Shehong, Sichuan 629200, P. R. China
| | - Changyu Tang
- Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu, Sichuan 610207, P. R. China
| | - Hao Liu
- Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, 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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Chen H, Sun C. Recent advances in lithium-rich manganese-based cathodes for high energy density lithium-ion batteries. Chem Commun (Camb) 2023. [PMID: 37376977 DOI: 10.1039/d3cc02195e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
The development of society challenges the limit of lithium-ion batteries (LIBs) in terms of energy density and safety. Lithium-rich manganese oxide (LRMO) is regarded as one of the most promising cathode materials owing to its advantages of high voltage and specific capacity (more than 250 mA h g-1) as well as low cost. However, the problems of fast voltage/capacity fading, poor rate performance and the low initial Coulombic efficiency severely hinder its practical application. In this paper, we review the latest research advances of LRMO cathode materials, including crystal structure, electrochemical reaction mechanism, existing problems and modification strategies. In this review, we pay more attention to recent progress in modification methods, including surface modification, doping, morphology and structure design, binder and electrolyte additives, and integration strategies. It not only includes widely studied strategies such as composition and process optimization, coating, defect engineering, and surface treatment, but also introduces many relatively novel modification methods, such as novel coatings, grain boundary coating, gradient design, single crystal, ion exchange method, solid-state batteries and entropy stabilization strategy. Finally, we summarize the existing problems in the development of LRMO and put forward some perspectives on the further research.
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Affiliation(s)
- Hexiang Chen
- School of Chemical and Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, P. R. China.
| | - Chunwen Sun
- School of Chemical and Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, P. R. China.
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Zhu L, Fu L, Zhou K, Yang L, Tang Z, Sun D, Tang Y, Li Y, Wang H. Engineering Crystal Orientation of Cathode for Advanced Lithium-ion Batteries: A Minireview. CHEM REC 2022; 22:e202200128. [PMID: 35801858 DOI: 10.1002/tcr.202200128] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/19/2022] [Indexed: 11/05/2022]
Abstract
Engineering crystal orientation has attracted widespread attention since it is related to the cyclability and rate performance of cathode materials for lithium-ion batteries (LIBs). Regulating the crystal directional growth with optimal exposed crystal facets is an effective strategy to improve the performance of cathode materials, but still lacks sufficient attention in research field. Herein, we briefly introduce the characterization techniques and identification methods for crystal facets, then summarize and illuminate the major methods for regulating crystal orientation and their internal mechanism. Furthermore, the optimization strategies for layered-, spinel-, and olivine-structure cathodes are discussed based on the characteristic of crystal structure, and the relationship between exposure of special crystal facets and lithium storage performance is deeply analyzed, which could guide the rational design of cathodes for LIBs.
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Affiliation(s)
- Lin Zhu
- Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R China.,Shenzhen Research Institute of Central South University, Shenzhen, 518057, P.R China
| | - Liang Fu
- College of Materials Science and Engineering, Chongqing University, Chongqing, 400045, China
| | - Kexin Zhou
- Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R China
| | - Lixuan Yang
- Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R China
| | - Zhi Tang
- Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R China
| | - Dan Sun
- Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R China
| | - Yougen Tang
- Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R China
| | - Yixin Li
- Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R China
| | - Haiyan Wang
- Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R China.,Shenzhen Research Institute of Central South University, Shenzhen, 518057, P.R China
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6
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Improving Fast Charging-Discharging Performances of Ni-Rich LiNi 0.8Co 0.1Mn 0.1O 2 Cathode Material by Electronic Conductor LaNiO 3 Crystallites. MATERIALS 2022; 15:ma15010396. [PMID: 35009542 PMCID: PMC8746607 DOI: 10.3390/ma15010396] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/24/2021] [Accepted: 01/03/2022] [Indexed: 11/23/2022]
Abstract
Fast charging-discharging is one of the important requirements for next-generation high-energy Li-ion batteries, nevertheless, electrons transport in the active oxide materials is limited. Thus, carbon coating of active materials is a common method to supply the routes for electron transport, but it is difficult to synthesize the oxide-carbon composite for LiNiO2-based materials which need to be calcined in an oxygen-rich atmosphere. In this work, LiNi0.8Co0.1Mn0.1O2 (NCM811) coated with electronic conductor LaNiO3 (LNO) crystallites is demonstrated for the first time as fast charging-discharging and high energy cathodes for Li-ion batteries. The LaNiO3 succeeds in providing an exceptional fast charging-discharging behavior and initial coulombic efficiency in comparison with pristine NCM811. Consequently, the NCM811@3LNO electrode presents a higher capacity at 0.1 C (approximately 246 mAh g−1) and a significantly improved high rate performance (a discharge specific capacity of 130.62 mAh g−1 at 10 C), twice that of pristine NCM811. Additionally, cycling stability is also improved for the composite material. This work provides a new possibility of active oxide cathodes for high energy/power Li-ion batteries by electronic conductor LaNiO3 coating.
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7
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Hu Y, Qin Z, Cong B, Pei J, Sun S, Chen G. Sn and Na Co‐doping to Suppress Voltage Decay of Li‐rich Layered Oxide. ChemElectroChem 2021. [DOI: 10.1002/celc.202100465] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yongyuan Hu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 P. R. China
| | - Zhongzheng Qin
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 P. R. China
| | - Bowen Cong
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 P. R. China
| | - Jian Pei
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 P. R. China
| | - Shanfu Sun
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 P. R. China
| | - Gang Chen
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 P. R. China
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Chen Z, Meng J, Wang Y, Ma Q, Lai F, Li Z, Zhang Q, Li D, Zhong S. Local structure modulation via cation compositional regulation for durable Li-rich layered cathode materials. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138138] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Tang W, Duan J, Xie J, Qian Y, Li J, Zhang Y. Dual-Site Doping Strategy for Enhancing the Structural Stability of Lithium-Rich Layered Oxides. ACS APPLIED MATERIALS & INTERFACES 2021; 13:16407-16417. [PMID: 33787200 DOI: 10.1021/acsami.1c02020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Lithium-rich layered oxide (LLO) cathode materials are considered to be one of the most promising next-generation candidates of cathode materials for lithium-ion batteries due to their high specific capacity. However, some inherent defects of LLOs hinder their practical application due to the oxygen loss and structure collapse resulting from intrinsic anion and cation redox reactions, such as poor cycle stability, sluggish Li+ kinetics, and voltage decay. Herein, we put forward a facile synergistic strategy to respond to these shortcomings of LLOs via dual-site doping with cerium (Ce) and boron (B) ions. The doped Ce ions occupy the octahedral sites, which not only enlarge the cell volume but also stabilize the layered framework and introduce abundant oxygen vacancies for LLOs, while B ions occupy the tetrahedral sites in the lattice, which block the migration path of transition metal (TM) ions and reduce the oxygen loss using the strong B-O bond. Based on this dual-site doping effect, after 100 cycles at 1 C, the dual-site doped materials exhibit excellent structural stability with a capacity retention of 91.15% (vs 75.12%) and also greatly suppress the voltage decay in LLOs with a voltage retention of 93.60% (vs 87.83%).
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Affiliation(s)
- Wei Tang
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
| | - Jidong Duan
- State Key Laboratory of Environmentally-Friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
- Sichuan Lvxin Power Technology Co., Ltd., 88 Hedong Avenue, Shehong 629200, China
| | - Jianlong Xie
- State Key Laboratory of Environmentally-Friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
| | - Yan Qian
- State Key Laboratory of Environmentally-Friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
| | - Jing Li
- State Key Laboratory of Environmentally-Friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
| | - Yu Zhang
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
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Chen T, Li R, Liu J, Mu D, Sun S, Zhao L, Tian S, Zhu W, Wang X, Dai C. Tin-based anode material with good reversibility of conversion reaction for lithium ion battery. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2020.114847] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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11
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Luo D, Ding X, Fan J, Zhang Z, Liu P, Yang X, Guo J, Sun S, Lin Z. Accurate Control of Initial Coulombic Efficiency for Lithium‐rich Manganese‐based Layered Oxides by Surface Multicomponent Integration. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010531] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Dong Luo
- Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 China
| | - Xiaokai Ding
- Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 China
| | - Jianming Fan
- Fujian Provincial Key Laboratory of Clean Energy Materials College of Chemistry and Materials Longyan University Longyan 364012 China
| | - Zuhao Zhang
- Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 China
| | - Peizhi Liu
- Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education Taiyuan University of Technology Taiyuan 030024 China
| | - Xiaohua Yang
- Institut National de la Recherche Scientifique-Center for Energy, Materials and Telecommunications Varennes Quebec J3X 1S2 Canada
| | - Junjie Guo
- Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education Taiyuan University of Technology Taiyuan 030024 China
| | - Shuhui Sun
- Institut National de la Recherche Scientifique-Center for Energy, Materials and Telecommunications Varennes Quebec J3X 1S2 Canada
| | - Zhan Lin
- Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 China
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Luo D, Ding X, Fan J, Zhang Z, Liu P, Yang X, Guo J, Sun S, Lin Z. Accurate Control of Initial Coulombic Efficiency for Lithium‐rich Manganese‐based Layered Oxides by Surface Multicomponent Integration. Angew Chem Int Ed Engl 2020; 59:23061-23066. [DOI: 10.1002/anie.202010531] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Indexed: 01/20/2023]
Affiliation(s)
- Dong Luo
- Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 China
| | - Xiaokai Ding
- Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 China
| | - Jianming Fan
- Fujian Provincial Key Laboratory of Clean Energy Materials College of Chemistry and Materials Longyan University Longyan 364012 China
| | - Zuhao Zhang
- Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 China
| | - Peizhi Liu
- Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education Taiyuan University of Technology Taiyuan 030024 China
| | - Xiaohua Yang
- Institut National de la Recherche Scientifique-Center for Energy, Materials and Telecommunications Varennes Quebec J3X 1S2 Canada
| | - Junjie Guo
- Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education Taiyuan University of Technology Taiyuan 030024 China
| | - Shuhui Sun
- Institut National de la Recherche Scientifique-Center for Energy, Materials and Telecommunications Varennes Quebec J3X 1S2 Canada
| | - Zhan Lin
- Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 China
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Wu H, Li X, Wang Z, Guo H, Peng W, Hu Q, Yan G, Wang J. Revealing the fake initial coulombic efficiency of spinel/layered Li-rich cathode materials. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136279] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Li R, Liu J, Chen T, Dai C, Jiang N. Systematic evaluation of lithium-excess polyanionic compounds as multi-electron reaction cathodes. NANOSCALE 2019; 11:16991-17003. [PMID: 31498352 DOI: 10.1039/c9nr05751j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Polyanion cathodes with multi-electron redox always facilitate wider application in a metal ion-based battery system because of their high capacity and safety. However, the irreversible phase transformation and interfacial deterioration remain major impediments. Herein, using monoclinic Li3V2(PO4)3 as a model, the impact of excess lithium on its electrochemical properties are demonstrated. It was determined that a maximum of 5% excess lithium could be incorporated into the monoclinic structure, and a further overdose of lithium led to the formation of secondary phase Li3PO4. The excess Li+ ions are located at both octahedral and interstitial sites, which enable enhanced redox kinetics that are mainly attributed to accelerated ionic movement induced by alternate diffusion behavior of Li+ ions in a three-dimensional permeation path. Moreover, Li-excess local configurations can stabilize the lattice oxygen and provide a favorable cathode-electrolyte interface, which synergistically relieves the structural degradation during electrochemical cycling, thus guaranteeing exceptional cycling stability (e.g., 82.5% after 1000 cycles at 1000 mA g-1). These findings provide a comprehensive understanding of defect/electronic structure/ion transport and the intrinsic properties of polyanionic Li3V2(PO4)3 and may help to pave the way for other highly stable electrodes for rechargeable batteries.
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Affiliation(s)
- Ruhong Li
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China.
| | - Jianchao Liu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China.
| | - Tianrui Chen
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China.
| | - Changsong Dai
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China.
| | - Ningyi Jiang
- Tianjin Space Power Technology Co., Ltd., Tianjin Institute of Power Sources, Tianjin 300381, China.
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