Highly conductive and stable iodine doped argyrodite electrolyte for all-solid-state lithium batteries
作者机构：Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences
出 版 物：《Journal of Energy Chemistry》 (能源化学(英文版))
年 卷 期：2025年第100卷第1期
页 面：50-58页
核心收录：
学科分类：0808[工学-电气工程] 081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术]
基 金：supported by the National Key R&D Program of China (grant no. 2022YFB3807700) the National Natural Science Foundation of China (Grant No. U1964205, U21A2075, 52172253,52102326, 52250610214, 22309194, 52372244) the Ningbo S&T Innovation 2025 Major Special Programme (Grant No.2019B10044, 2021Z122, 2023Z106) the Zhejiang Provincial Key R&D Program of China (Grant No. 2022C01072, 2024C01095) the Jiangsu Provincial S&T Innovation Special Programme for carbon peak and carbon neutrality (Grant No. BE2022007) the Baima Lake Laboratory Joint Funds of the Zhejiang Provincial Natural Science Foundation of China (LBMHD24E020001) Youth Innovation Promotion Association CAS (Y2021080)
主 题：Argyrodite electrolytes Iodine doping Ionic conductivity Stability All-solid-state lithium battery
摘 要：Lithium argyrodites with high ionic conductivity and low cost are considered as one of the most prospective solid electrolytes for all-solid-state lithium ***,the poor chemical stability and compatibility with lithium metal limit their ***,Li5.4PS4.4Cl1.4I0.2solid electrolyte with high ionic conductivity of 11.49 m S cm-1and improved chemical stability is synthesized by iodine *** ultra-thin Li5.4PS4.4Cl1.4I0.2membrane with thickness of 10μm can be obtained by wet coating process,exhibiting a high ionic conductivity of 2.09 mS cm-1and low areal resistance of 1.17Ω***,iodine doping could in-situ form LiI at the lithium/electrolyte interface and improve the critical current density of Li5.4PS4.4Cl1.6from 0.8 to 1.35 mA *** resultant LiCoO2/Li5.4PS4.4Cl1.4I0.2/Li battery shows excellent cycling stability at 1 C,with a reversible specific capacity of 110.1 mA h g-1and a retention of 80.5% after 1000 *** addition,the assembled LiCoO2/Li5.4PS4.4Cl1.4I0.2membrane/Li pouch cell delivers an initial discharge capacity of 110.4 mA h g-1and 80.5% capacity retention after 100 cycles.
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