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Zhang X, Zhao H, Wang N, Xiao Y, Liang S, Yang J, Huang X. Gradual gradient distribution composite solid electrolyte for solid-state lithium metal batteries with ameliorated electrochemical performance. J Colloid Interface Sci 2024; 658:836-845. [PMID: 38154246 DOI: 10.1016/j.jcis.2023.12.120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/29/2023] [Accepted: 12/19/2023] [Indexed: 12/30/2023]
Abstract
Composite solid electrolytes (CSEs) have emerged as promising contenders for tackling the safety concerns associated with lithium metal batteries and attaining elevated energy densities. Nonetheless, augmenting ion conductivity and curtailing the growth of lithium dendrites within the electrolyte remain pressing challenges. We have developed CSEs featuring a unique structure, in which Li6.4La3Zr1.4Ta0.6O12 (LLZTO) is distributed in a gradient decline from the center to both sides (GCSE). This distinctive arrangement encompasses heightened polymer content at the edges, thereby enhancing the compatibility between CSEs and electrode materials. Concurrently, the escalated LLZTO content at the center functions to impede the proliferation of lithium dendrites. The uniform gradient distribution state facilitates the consistent and rapid transport of lithium ions. At room temperature, GCSE exhibits an ionic conductivity of 1.5 × 10-4 S cm-1, with stable constant current cycling of lithium for over 1200 h. Furthermore, CR2032 coin batteries with a LiFePO4 (LFP)|GCSE|Li configuration demonstrate excellent rate performance and cycling stability, yielding a discharge capacity of 120 mA h g-1 at 0.5C and retaining 90 % capacity after 200 cycles at 60 °C. Flexible solid electrolytes with gradient structures offer substantial advantages in dealing with ion conductivity and inhibition of lithium dendrites, thereby expected to propel the practical application of lithium metal batteries.
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Affiliation(s)
- Xiaobao Zhang
- National Engineering Research Center for Rare Earth, Grirem Advanced Materials Co., Ltd., Beijing 100088, China; Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Xiong'an 071700, China; General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Huan Zhao
- National Engineering Research Center for Rare Earth, Grirem Advanced Materials Co., Ltd., Beijing 100088, China; Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Xiong'an 071700, China; General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Ning Wang
- National Engineering Research Center for Rare Earth, Grirem Advanced Materials Co., Ltd., Beijing 100088, China; Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Xiong'an 071700, China; General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Yiyang Xiao
- National Engineering Research Center for Rare Earth, Grirem Advanced Materials Co., Ltd., Beijing 100088, China; Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Xiong'an 071700, China; General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Shiang Liang
- National Engineering Research Center for Rare Earth, Grirem Advanced Materials Co., Ltd., Beijing 100088, China; Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Xiong'an 071700, China; General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Juanyu Yang
- National Engineering Research Center for Rare Earth, Grirem Advanced Materials Co., Ltd., Beijing 100088, China; Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Xiong'an 071700, China; General Research Institute for Nonferrous Metals, Beijing 100088, China.
| | - Xiaowei Huang
- National Engineering Research Center for Rare Earth, Grirem Advanced Materials Co., Ltd., Beijing 100088, China; Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Xiong'an 071700, China; General Research Institute for Nonferrous Metals, Beijing 100088, China.
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Khan K, Hanif MB, Xin H, Hussain A, Ali HG, Fu B, Fang Z, Motola M, Xu Z, Wu M. PEO-Based Solid Composite Polymer Electrolyte for High Capacity Retention All-Solid-State Lithium Metal Battery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2305772. [PMID: 37712152 DOI: 10.1002/smll.202305772] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/28/2023] [Indexed: 09/16/2023]
Abstract
The limited ionic conductivity at room temperature and the constrained electrochemical window of poly(ethylene oxide) (PEO) pose significant obstacles that hinder its broader utilization in high-energy-density lithium metal batteries. The garnet-type material Li6.4 La3 Zr1.4 Ta0.6 O12 (LLZTO) is recognized as a highly promising active filler for enhancing the performance of PEO-based solid polymer electrolytes (SPEs). However, its performance is still limited by its high interfacial resistance. In this study, a novel hybrid filler-designed SPE is employed to achieve excellent electrochemical performance for both the lithium metal anode and the LiFePO4 cathode. The solid composite membrane containing hybrid fillers achieves a maximum ionic conductivity of 1.9 × 10-4 S cm-1 and a Li+ transference number of 0.67 at 40 °C, respectively. Additionally, the Li/Li symmetric cells demonstrate a smooth and stable process for 2000 h at a current density of 0.1 mA cm-2 . Furthermore, the LiFePO4 /Li battery delivers a high-rate capacity of 159.2 mAh g-1 at 1 C, along with a capacity retention of 95.2% after 400 cycles. These results validate that employing a composite of both active and inactive fillers is an effective strategy for achieving superior performance in all-solid-state lithium metal batteries (ASSLMBs).
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Affiliation(s)
- Kashif Khan
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, Zhejiang, 313001, P. R. China
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China
| | - Muhammad Bilal Hanif
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University Bratislava, Bratislava, 842 15, Slovakia
| | - Hu Xin
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China
| | - Arshad Hussain
- Institute for Advanced Study, Shenzhen University, Guangdong, 518060, China
| | - Hina Ghulam Ali
- Helmholtz-Institute Ulm - Electrochemical Energy Storage (HIU), Helmholtzstraße 11, 89081, Ulm, Germany
| | - Bowen Fu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China
| | - Zixuan Fang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China
| | - Martin Motola
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University Bratislava, Bratislava, 842 15, Slovakia
| | - Ziqiang Xu
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, Zhejiang, 313001, P. R. China
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China
| | - Mengqiang Wu
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, Zhejiang, 313001, P. R. China
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China
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