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Shao Y, Xu J, Amardeep A, Xia Y, Meng X, Liu J, Liao S. Lithium-Ion Conductive Coatings for Nickel-Rich Cathodes for Lithium-Ion Batteries. SMALL METHODS 2024:e2400256. [PMID: 38708816 DOI: 10.1002/smtd.202400256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/20/2024] [Indexed: 05/07/2024]
Abstract
Nickel (Ni)-rich cathodes are among the most promising cathode materials of lithium batteries, ascribed to their high-power density, cost-effectiveness, and eco-friendliness, having extensive applications from portable electronics to electric vehicles and national grids. They can boost the wide implementation of renewable energies and thereby contribute to carbon neutrality and achieving sustainable prosperity in the modern society. Nevertheless, these cathodes suffer from significant technical challenges, leading to poor cycling performance and safety risks. The underlying mechanisms are residual lithium compounds, uncontrolled lithium/nickel cation mixing, severe interface reactions, irreversible phase transition, anisotropic internal stress, and microcracking. Notably, they have become more serious with increasing Ni content and have been impeding the widespread commercial applications of Ni-rich cathodes. Various strategies have been developed to tackle these issues, such as elemental doping, adding electrolyte additives, and surface coating. Surface coating has been a facile and effective route and has been investigated widely among them. Of numerous surface coating materials, have recently emerged as highly attractive options due to their high lithium-ion conductivity. In this review, a thorough and comprehensive review of lithium-ion conductive coatings (LCCs) are made, aimed at probing their underlying mechanisms for improved cell performance and stimulating new research efforts.
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Affiliation(s)
- Yijia Shao
- The Key Laboratory of Fuel Cell Technology of Guangdong Province & the Key Laboratory of New Energy Technology of Guangdong Universities, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, China
- School of Engineering, Faculty of Applied Science, University of British Columbia, Kelowna, BC, V1V 1V7, Canada
| | - Jia Xu
- School of Engineering, Faculty of Applied Science, University of British Columbia, Kelowna, BC, V1V 1V7, Canada
| | - Amardeep Amardeep
- School of Engineering, Faculty of Applied Science, University of British Columbia, Kelowna, BC, V1V 1V7, Canada
| | - Yakang Xia
- School of Engineering, Faculty of Applied Science, University of British Columbia, Kelowna, BC, V1V 1V7, Canada
| | - Xiangbo Meng
- Department of Mechanical Engineering, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Jian Liu
- School of Engineering, Faculty of Applied Science, University of British Columbia, Kelowna, BC, V1V 1V7, Canada
| | - Shijun Liao
- The Key Laboratory of Fuel Cell Technology of Guangdong Province & the Key Laboratory of New Energy Technology of Guangdong Universities, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, China
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Huang JY, Cheng CY, Lai YM, Iputera K, Chung RJ, Liu RS. Engineering Cathode-Electrolyte Interface of High-Voltage Spinel LiNi 0.5Mn 1.5O 4 via Halide Solid-State Electrolyte Coating. ACS APPLIED MATERIALS & INTERFACES 2023; 15:40648-40655. [PMID: 37584718 DOI: 10.1021/acsami.3c08517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
The high-voltage spinel LiNi0.5Mn1.5O4 (LNMO) cathode material with high energy density, low cost, and excellent rate capability has grabbed the attention of the field. However, a high-voltage platform at 4.7 V causes severe oxidative side reactions when in contact with the organic electrolyte, leading to poor electrochemical performance. Furthermore, the contact between the liquid electrolyte and LNMO leads to Mn dissolution during cycles. In this work, we applied the sol-gel method to prepare Li3InCl6-coated LNMO (LIC@LNMO) to address the mentioned problems of LNMO. By introducing a protective layer of halide-type solid-state electrolyte on LNMO, we can prevent direct contact between LNMO and electrolyte while maintaining good ionic conductivity. Thus, we could demonstrate that 5 wt % LIC@LNMO exhibited a good cycle performance with a Coulombic efficiency of 99% and a capacity retention of 80% after the 230th cycle at the 230th cycle at 1C at room temperature.
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Affiliation(s)
- Jheng-Yi Huang
- Department of Chemistry and Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 106, Taiwan
| | - Ching-Yun Cheng
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan
| | - Yan-Ming Lai
- Department of Chemistry and Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 106, Taiwan
| | - Kevin Iputera
- Department of Chemistry and Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 106, Taiwan
| | - Ren-Jei Chung
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan
| | - Ru-Shi Liu
- Department of Chemistry and Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 106, Taiwan
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3
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Xi L, Zhang D, Xu X, Wu Y, Li F, Yao S, Zhu M, Liu J. Interface Engineering of All-Solid-State Batteries Based on Inorganic Solid Electrolytes. CHEMSUSCHEM 2023; 16:e202202158. [PMID: 36658096 DOI: 10.1002/cssc.202202158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/18/2023] [Accepted: 01/19/2023] [Indexed: 05/06/2023]
Abstract
All-solid-state batteries (ASSBs) based on inorganic solid electrolytes (SEs) are one of the most promising strategies for next-generation energy storage systems and electronic devices due to the higher energy density and intrinsic safety. However, the poor solid-solid contact and restricted chemical/electrochemical stability of inorganic SEs both in cathode and anode SE interfaces cause contact failure and the degeneration of SEs during prolonged charge-discharge processes. As a result, the increasing interface resistance significantly affects the coulombic efficiency and cycling performance of ASSBs. Herein, we present a fundamental understanding of physical contact and chemical/electrochemical features of ASSB interfaces based on mainstream inorganic SEs and summarize the recent work on interface modification. SE doping, optimizing morphology, introducing interlayer/coating layer, and utilizing compatible electrode materials are the key methods to prevent side reactions, which are discussed separately in cathode/anode-SE interface. We also highlight the constant extra stack pressure applied during ASSB cycling, which is important to the electrochemical performance. Finally, our perspectives on interface modification for practical high-performance ASSBs are put forward.
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Affiliation(s)
- Lei Xi
- Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, P. R. China
| | - Dechao Zhang
- Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, P. R. China
| | - Xijun Xu
- Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, P. R. China
| | - Yiwen Wu
- Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, P. R. China
| | - Fangkun Li
- Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, P. R. China
| | - Shiyan Yao
- Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, P. R. China
| | - Min Zhu
- Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, P. R. China
| | - Jun Liu
- Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, P. R. China
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4
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Self-shutdown function and uniform Li-ion flux enabled by a double-layered polymer electrolyte for high-performance Li metal batteries. J Solid State Electrochem 2023. [DOI: 10.1007/s10008-023-05432-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
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Liu H, Zhao X, Xie Y, Luo S, Wang Z, Zhu L, Zhang X. Insights into Capacity Fading Mechanism and Coating Modification of High-Nickel Cathodes in Lithium-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2022; 14:55491-55502. [PMID: 36503239 DOI: 10.1021/acsami.2c14235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Developments in electric vehicles and mobile electronic devices are promoting the demand for lithium-ion batteries with higher capacity and longer lifetime. The performances of lithium-ion batteries are crucially affected by cathode materials, among which ternary cathode materials are the most competitive option with the advantages of high capacity, safety, and cost-effectiveness. However, although high-nickel ternary cathode materials can achieve relatively high specific capacity, they generally have unsatisfactory stability during long-term cycling. In this study, the microscopic mechanisms of the cathode failure and the principle of coating modification in lithium-ion batteries have been comprehensively examined. It has been revealed that the irreversible capacity fading is mainly attributed to the interface chemical reaction, which reduces the transition-metal valence states and generates undesired disordered rock-salt phases. This structural phase transformation at the interface induces the dissolution of transition metals and results in irreversible capacity loss of the cathode. To restrain the occurrence of this process, a LiNbO3 coating-modified single-crystal LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode material has been prepared. The electrochemical properties as well as the microstructural evolution of the cathode-electrolyte interface during cycling of both the uncoated and coated samples have been comprehensively characterized and compared through impedance spectroscopy testing, SEM-EDX, STEM, and EELS characterization. Additionally, molecular dynamics simulation results confirmed that LiNbO3 coating can effectively inhibit the dissolution of transition metals while providing stable lithium-ion channels. The experimental results also indicate that the coating modification can effectively improve the cycling stability of the NCM811, with the capacity retention rate for 500 cycles increasing from 19% to 70%. This study is helpful to deepen the understanding of the capacity fading mechanisms, and the coating method is effective at maintaining the structural stability and improving the cycle life of lithium-ion batteries.
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Affiliation(s)
- Hexin Liu
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
| | - Xiayan Zhao
- Guilin Electrical Equipment Scientific Research Institute Co. Ltd., Guilin 541004, Guangxi, China
- College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, Guangxi, China
| | - Yongjia Xie
- Guilin Electrical Equipment Scientific Research Institute Co. Ltd., Guilin 541004, Guangxi, China
| | - Shuting Luo
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
| | - Zhenyu Wang
- Guilin Electrical Equipment Scientific Research Institute Co. Ltd., Guilin 541004, Guangxi, China
| | - Lingyun Zhu
- Guilin Electrical Equipment Scientific Research Institute Co. Ltd., Guilin 541004, Guangxi, China
| | - Xing Zhang
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
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Enhancing the electrochemical performance of LiNi0.8Co0.1Mn0.1O2 cathodes through amorphous coatings. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Effects of Coating on the Electrochemical Performance of a Nickel-Rich Cathode Active Material. ENERGIES 2022. [DOI: 10.3390/en15134886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
: Due to their safety and high power density, one of the most promising types of all-solid-state lithium batteries is the one made with the argyrodite solid electrolyte (ASE). Although substantial efforts have been made toward the commercialization of this battery, it is still challenged by some technical issues. One of these issues is to prevent the side reactions at the interface of the ASE and the cathode active material (CAM). A solution to address this issue is to coat the CAM particles with a material that is compatible with both ASE and CAM. Prior studies show that the lithium niobate, LiNbO3, (LNO) is a promising material for coating CAM particles to reduce the interfacial side reactions. However, no systematic study is available in the literature to show the effect of coating LNO on CAM performance. This paper aims to quantify the effect of LNO coating on the electrochemical performance of a nickel-rich CAM. The electrochemical performance parameters that are studied are the capacity, cycling performance, and rate performance of the coated-CAM; and the effectiveness of the coating to prevent the side reactions at the ASE and CAM interface is out of the scope of this study. To eliminate the effect of side reactions at the ASE and CAM interface, we conduct all tests in the organic liquid electrolyte (OLE) cells to solely present the effect of coating on the CAM performance. For this purpose, 0.5 wt% and 1 wt% LNO are used to coat the LiNi0.6Mn0.2Co0.2O2 (NMC-60) CAM through two synthesizing methods. Consequently, the effects of the synthesizing method and the coating weight percentage on the NMC-60 performance are presented.
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Lee HB, Dinh Hoang T, Byeon YS, Jung H, Moon J, Park MS. Surface Stabilization of Ni-Rich Layered Cathode Materials via Surface Engineering with LiTaO 3 for Lithium-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2022; 14:2731-2741. [PMID: 34985861 DOI: 10.1021/acsami.1c19443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Recently, Ni-rich layered cathode materials have become the most common material used for lithium-ion batteries. From a structural viewpoint, it is crucial to stabilize the surface structures of such materials, as they are prone to undesirable side reactions and particle cracking in which intergranular microcracks form at the particle surfaces and then propagate inside. As a simplified engineering technique for obtaining Ni-rich cathode materials with high reversibility and long-term cycling stability, we propose a facile surface coating of piezoelectric LiTaO3 onto a Ni-rich cathode material to enhance the charge transfer reaction and surface structural integrity. Based on theoretical and experimental investigation, we demonstrate that this surface protection approach is effective at enhancing the reversibility and mechanical strength of Ni-rich cathode materials, leading to a stable cycle performance at up to 150 cycles, even at 60 °C. Furthermore, the piezoelectric characteristics of the surface LiTaO3 can enhance the rate capability of Ni-rich cathode materials at current densities of up to 2.0C. The results of this study provide a practical insight on the development of Ni-rich cathode materials for practical use in electric vehicle applications.
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Affiliation(s)
- Hyo Bin Lee
- Department of Advanced Materials Engineering for Information and Electronics, Integrated Education Institute for Frontier Science & Technology (BK21 Four), Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin 17104, Republic of Korea
| | - Trung Dinh Hoang
- School of Energy Systems Engineering, Chung-Ang University, Heukseok-Ro, Dongjak-Gu, Seoul 06974, Republic of Korea
| | - Yun Seong Byeon
- Department of Advanced Materials Engineering for Information and Electronics, Integrated Education Institute for Frontier Science & Technology (BK21 Four), Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin 17104, Republic of Korea
| | - Hyuck Jung
- Battery Materials R&D center, COSMO AM&T, 36 Chungjuhosu-ro, Chungju 27434, Republic of Korea
| | - Janghyuk Moon
- School of Energy Systems Engineering, Chung-Ang University, Heukseok-Ro, Dongjak-Gu, Seoul 06974, Republic of Korea
| | - Min-Sik Park
- Department of Advanced Materials Engineering for Information and Electronics, Integrated Education Institute for Frontier Science & Technology (BK21 Four), Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin 17104, Republic of Korea
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Lee G, Jung K, Lee Y, Kim J, Yim T. Interface-Stabilized Layered Lithium Ni-Rich Oxide Cathode via Surface Functionalization with Titanium Silicate. ACS APPLIED MATERIALS & INTERFACES 2021; 13:47696-47705. [PMID: 34585914 DOI: 10.1021/acsami.1c15271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Nickel-rich lithium metal oxide cathode materials have recently be en highlighted as next-generation cathodes for lithium-ion batteries. Nevertheless, their relatively high surface reactivity must be controlled, as fading of the cycling retention occurs rapidly in the cells. This paper proposes functionalized nickel-rich lithium metal oxide cathode materials by a multipurpose nanosized inorganic material-titanium silicon oxide-via a simple thermal treatment process. We examined the topologies of the nano-titanium silicate-functionalized nickel-rich lithium metal oxide cathodes with scanning electron microscopy and quantitatively analyzed their improved mechanical properties using microindentation. The cell containing nickel-rich lithium metal oxide cathodes suffered from poor cycling behavior as the electrolytes persistently decomposed; however, this behavior was effectively inhibited in the cell by nano-titanium silicate-functionalized nickel-rich lithium metal oxide cathodes. Further ex situ analyses indicated that the particle hardness of the nano-titanium silicate-functionalized nickel-rich lithium metal oxide cathode materials was maintained, and decomposition of the electrolyte by the dissolution of transition metals was thoroughly inhibited even after 100 cycles. Based on these results, we concluded that the use of nano-titanium silicate as a coating material for nickel-rich lithium metal oxide cathode materials is an effective way to enhance the cycling performance of lithium-ion batteries.
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Affiliation(s)
- Giseung Lee
- Department of Chemistry, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Kwangeun Jung
- Department of Chemistry, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Yongho Lee
- Cathode Material R&D Group, POSCO CHEMICAL, 87, Chemdangieop 1-ro, Sandong-myeon, Gumi-si, Gyeongsangbuk-do 39171, Republic of Korea
| | - Jeonghan Kim
- Cathode Material R&D Group, POSCO CHEMICAL, 87, Chemdangieop 1-ro, Sandong-myeon, Gumi-si, Gyeongsangbuk-do 39171, Republic of Korea
| | - Taeeun Yim
- Department of Chemistry, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
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Luo L, Wang D, Zhou Z, Dong P, Yang S, Duan J, Zhang Y. Engineering a Robust Interface on Ni-Rich Cathodes via a Novel Dry Doping Process toward Advanced High-Voltage Performance. ACS APPLIED MATERIALS & INTERFACES 2021; 13:45068-45076. [PMID: 34510893 DOI: 10.1021/acsami.1c12803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Ni-rich layered oxides have become the main force of cathode materials for EV cells with high energy density owing to their satisfactory theoretical capacity, cost-effectiveness, and low toxicity. However, the high-voltage stability of Ni-rich cathode materials still has not fulfilled the demand of power batteries due to their intrinsic structural and electrochemical instability. The commonly used modification procedures are achieved via a wet process, which may lead to surface lithium-ion deficiency, phase change, and high costs during manufacturing. Herein, we construct a multifunctional Ti-based interfacial architecture on the surface of LiNi0.6Co0.2Mn0.2O2 (NCM) cathode materials via a novel dry interface modifying process in which no solvent is employed. The Ti-based interfacial architecture accelerates the transportation of lithium ions and consequently stabilizes the interfacial structure. This approach significantly improves the cycling stability in half cells, with a 15% increase in capacity retention over 100 cycles at 1 C under a high voltage of 4.5 V. Impressively, few internal cracks are observed in a modified sample after 500 times of charge and discharge between 2.75 and 4.35 V at 1 C rate, and the capacity retention can reach 93%.
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Affiliation(s)
- Liang Luo
- National and Local Joint Engineering Laboratory for Lithium-Ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Lianhua Campus, Xuefu Road, Kunming 650093, China
- BTR New Material Group Co., Limited, Shenzhen 518000, China
| | - Ding Wang
- National and Local Joint Engineering Laboratory for Lithium-Ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Lianhua Campus, Xuefu Road, Kunming 650093, China
| | - Zhongren Zhou
- National and Local Joint Engineering Laboratory for Lithium-Ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Lianhua Campus, Xuefu Road, Kunming 650093, China
| | - Peng Dong
- National and Local Joint Engineering Laboratory for Lithium-Ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Lianhua Campus, Xuefu Road, Kunming 650093, China
| | - Shunyi Yang
- BTR New Material Group Co., Limited, Shenzhen 518000, China
| | - Jianguo Duan
- National and Local Joint Engineering Laboratory for Lithium-Ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Lianhua Campus, Xuefu Road, Kunming 650093, China
| | - Yingjie Zhang
- National and Local Joint Engineering Laboratory for Lithium-Ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Lianhua Campus, Xuefu Road, Kunming 650093, China
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Zhu H, Yu H, Yang Z, Jiang H, Li C. Tungsten and phosphate polyanion co-doping of Ni-ultrahigh cathodes greatly enhancing crystal structure and interface stability. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2021.04.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Shin SS, Kim JS, Choi S, Ji HI, Yoon KJ, Lee JH, Chung KY, Kim H. Quantitative determination of lithium depletion during rapid cycling in sulfide-based all-solid-state batteries. Chem Commun (Camb) 2021; 57:3453-3456. [PMID: 33687380 DOI: 10.1039/d0cc08367d] [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
We propose a promising electrochemical analysis tool based on the distribution of relaxation times (DRT) to quantify interfacial resistances towards a comprehensive understanding of complex solid-state interfacial phenomena in sulfide-based all-solid-state batteries (ASSBs). Using DRT-assisted impedance analysis, we identify a new resistance component in the range of 102-103 Hz of 3.5 and 0.9 Ω in the absence and presence of a LiNbO3 layer, respectively, at 1C-rate. Experimental and computational studies confirm that this interfacial resistance results from lithium depletion in sulfide solid electrolytes. Furthermore, we expect our approach to provide new insights into complex interfacial phenomena in ASSBs.
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Affiliation(s)
- Sung Soo Shin
- Center for Energy Materials Research, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Korea.
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