Dual-shell silicate and alumina coating for long lasting and high capacity lithium ion batteries

查看全文 作　　者：Marcos [1]Lucero;Tucker [1]M.Holstun;Yudong [2]Yao;Ryan [1]Faase;Maoyu [1]Wang;Alpha T.N’[3]Diaye;David [4]P.Cann;Joe [1]Baio;Junjing [2]Deng;Zhenxing [1]Feng

机构地区：[1]School of Chemical,Biological,and Environmental Engineering,Oregon State University,Corvallis,OR 97331,United States;[2]Advanced Photon Source,Argonne National Laboratory,Argonne,Illinois 60439,United States;[3]Advanced Light Source,Lawrence Berkeley National Laboratory,Berkeley,California 94720,United States;[4]Materials Science,School of Mechanical,Industrial,and Manufacturing Engineering,Oregon State University,Corvallis,OR 97331,United States

出　　处：《Journal of Energy Chemistry》索引2022年第31卷第5期,共10页

基　　金：supported by the U.S. National Science Foundation (CBET-1949870, CBET-2016192, and DMR-1832803);Part of the research was conducted at the Northwest Nanotechnology Infrastructure, a National Nanotechnology Coordinated Infrastructure (NNCI) site at Oregon State University, which is supported, in part, by the U.S. National Science Foundation (NNCI-1542101 and NCC-2025489), and Oregon State University。 摘　　要：Here we demonstrate a theory-driven, novel dual-shell coating system of Li_(2)SrSiO_(4) and Al_(2)O_(3), achieved via a facile and scalable sol-gel technique on LiCoO_(2) electrode particles. The optimal thickness of each coating can lead to increased specific capacity(~185 m Ah/g at 0.5 C-rate) at a cut-off potential of 4.5 V, and greater cycling stability at very high C rates(up to 10 C) in half-cells with lithium metal. The mechanism of this superior performance was investigated using a combination of X-ray and electron characterization methods. It shows that the results of this investigation can inform future studies to identify still better dual-shell coating schemes, achieved by such industrially feasible techniques, for application on similar, nickel-rich cathode materials. 关键词：Lithium cobalt oxide Surface coating SOL-GEL SILICATE ALUMINA X-ray absorption spectroscopy

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Dual-shell silicate and alumina coating for long lasting and high capacity lithium ion batteries

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