A"Concentrated lonogel-in-Ceramic"Silanization Composite Electrolyte with Superior Bulk Conductivity and Low Interfacial Resistance for Quasi-Solid-State Li Metal Batteries

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外文摘要：The ideal composite electrolyte for the pursued safe and high-energy-density lithium metal batteries(LMBs)is expected to demonstrate peculiarity of superior bulk conductivity,low interfacial resistances,and good compatibility against both Li-metal anode and high-voltage cathode.There is no composite electrolyte to synchronously meet all these requirements yet,and the battery performance is inhibited by the absence of effective electrolyte design.Here we report a unique"concentrated ionogel-in-ceramic"silanization composite electrolyte(SCE)and validate an electrolyte design strategy based on the coupling of high-content silane-conditioning garnet and concentrated ionogel that builds well-percolated Li+transport pathways and tackles the interface issues to respond all the aforementioned requirements.It is revealed that the silane conditioning enables the uniform dispersion of garnet nanoparticles at high content(70 wt％)and forms mixed-lithiophobic-conductive LiF-Li3N solid electrolyte interphase.Notably,the yielding SCE delivers an ultrahigh ionic conductivity of 1.76 X 10-3 S cm-1 at 25 ℃,an extremely low Li-metal/electrolyte interfacial area-specific resistance of 13 Ω cm2,and a distinctly excellent long-term 1200 cycling without any capacity decay in 4.3 V Li‖LiNi0.5Co0.2Mn0.3O2(NCM523)quasi-solid-state LMB.This composite electrolyte design strategy can be extended to other quasi-/solid-state LMBs.

外文关键词：

composite electrolyteconcentrated ionogel-in-ceramicinterfacial resistancesilanesolid electrolyte interphase

作者：

Wangshu Hou、Zongyuan Chen、Shengxian Wang、Fengkun Wei、Yanfang Zhai、Ning Hu、Shufeng Song

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作者单位：

College of Aerospace Engineering,Chongqing University,Chongqing 400044,China

Chongqing Changan New Energy Vehicle Co.,Ltd.,Chongqing 400044,China

State Key Laboratory of Reliability and Intelligence Electrical Equipment,National Engineering Research Center for Technological Innovation Method and Tool,and School of Mechanical Engineering Hebei University of Technology,Tianjin 300401,China

基金：

Key Program for International Science and Technology Cooperation Projects of the Ministry of Science and Technology of ChinaTechnical Innovation and Application Development Project of ChongqingOpening Project of State Key Laboratory of High Performance Ceramics and Superfine MicrostructureChinese National Natural Science FundChinese National Natural Science FundNational Science and Technology Major Projectscience and Technology Planning Project of TianjinKey Program of Research and Development of Hebei ProvinceFund for Innovative Research Groups of Natural Science Foundation of Hebei ProvinceNatural Science Foundation of ChongqingKey Project of Natural Science Foundation of Tianjin

项目编号：

2021YFE0109700Z20230084SKL202106SIC11632004U18642082017-Ⅶ-0011-010620ZYJDJC00030202030507040009A2020202002cstc2021jcyjmsxmX0241S20ZDF077

出版年：

2024

DOI：

10.1002/eem2.12736

能源与环境材料(英文)

ISSN：

年,卷(期)：2024.7(5)