典型文献
The interphasial degradation of 4.2 V-class poly(ethylene oxide)-based solid batteries beyond electrochemical voltage limit
文献摘要：
Solid-state polymer electrolytes(SPEs)have attracted increasing attention due to good interfacial con-tact,light weight,and easy manufacturing.However,the practical application of SPEs such as the most widely studied poly(ethylene oxide)(PEO)in high-energy solid polymer batteries is still challenging,and the reasons are yet elusive.Here,it is found that the mismatch between PEO and 4.2 V-class cathodes is beyond the limited electrochemical window of PEO in the solid LiNi1/3Mn1/3Co1/3O2(NMC)-PEO batter-ies.The initial oxidation of PEO initiates remarkable surface reconstruction of NMC grains in solid batter-ies that are different from the situation in liquid electrolytes.Well-aligned nanovoids are observed in NMC grains during the diffusion of surface reconstruction layers towards the bulk in solid batteries.The substantial interphasial degradation,therefore,blocks smooth Li+transport across the NMC-PEO interface and causes performance degradation.A thin yet effective LiF-containing protection layer on NMC can effectively stabilize the NMC-PEO interface with a greatly improved lifespan of NMC|PEO|Li bat-teries.This work deepens the understanding of degradations in high-voltage solid-state polymer batteries.
文献关键词：
中图分类号：
作者姓名：
Renzhi Huang;Yang Ding;Fenglin Zhang;Wei Jiang;Canfu Zhang;Pengfei Yan;Min Ling;Huilin Pan
作者机构：
Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,Zhejiang,China;Department of Chemistry,Zhejiang University,Hangzhou 310027,Zhejiang,China;Beijing Key Laboratory of Microstructure and Properties of Solids,Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China;State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,Zhejiang,China
文献出处：
引用格式：
[1]Renzhi Huang;Yang Ding;Fenglin Zhang;Wei Jiang;Canfu Zhang;Pengfei Yan;Min Ling;Huilin Pan-.The interphasial degradation of 4.2 V-class poly(ethylene oxide)-based solid batteries beyond electrochemical voltage limit)[J].能源化学,2022(12):504-511
A类：
interphasial,nanovoids,degradations
B类：
class,ethylene,oxide,solid,batteries,beyond,electrochemical,voltage,Solid,state,polymer,electrolytes,SPEs,have,attracted,increasing,attention,due,good,interfacial,tact,light,weight,easy,manufacturing,However,practical,application,such,most,widely,studied,PEO,high,energy,still,challenging,reasons,are,yet,elusive,Here,found,that,mismatch,between,cathodes,limited,window,LiNi1,3Mn1,3Co1,3O2,NMC,initial,oxidation,initiates,remarkable,surface,reconstruction,grains,different,from,situation,liquid,Well,aligned,observed,during,diffusion,layers,towards,bulk,substantial,therefore,blocks,smooth,Li+transport,across,interface,causes,performance,thin,LiF,containing,protection,can,effectively,stabilize,greatly,improved,lifespan,This,work,deepens,understanding
AB值：
0.513742
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