Stable Interface Chemistry and Multiple Ion Transport of Composite Electrolyte Contribute to Ultra-long Cycling Solid-State LiNi0.8Co0.1Mn0.1O2/Lithium Metal Batteries

被引：215

作者：

Yang, Ke ^{[1
,5
]}

Chen, Likun ^{[1
,5
]}

Ma, Jiabin ^{[1
,5
]}

Lai, Chen ^{[2
]}

Huang, Yanfei ^{[3
]}

Mi, Jinshuo ^{[1
,5
]}

Biao, Jie ^{[1
,5
]}

Zhang, Danfeng ^{[1
,5
]}

Shi, Peiran ^{[1
,5
]}

Xia, Heyi ^{[1
]}

Zhong, Guiming ^{[4
]}

Kang, Feiyu ^{[1
,5
]}

He, Yan-Bing ^{[1
]}

机构：

[1] Tsinghua Shenzhen Int Grad Sch, Inst Mat Res IMR, Shenzhen All Solid State Lithium Battery Electrol, Shenzhen 518055, Peoples R China

[2] Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat, Minist Educ, Beijing 100084, Peoples R China

[3] Shenzhen Univ, Coll Mat Sci & Engn, Shenzhen 518055, Peoples R China

[4] Chinese Acad Sci, Dalian Inst Chem Phys, Lab Adv Spectroelectrochem & Li Ion Batteries, Dalian 116023, Peoples R China

[5] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2021年 / 60卷 / 46期

基金：

中国国家自然科学基金;

关键词：

composite electrolytes; interface chemistry; multiple ion transport; solid-state lithium metal batteries; POLYMER ELECTROLYTES; HIGH-VOLTAGE; LITHIUM; CONDUCTIVITY; STRATEGY; PATHWAY; ESCA;

D O I：

10.1002/anie.202110917

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Severe interfacial side reactions of polymer electrolyte with LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode and Li metal anode restrict the cycling performance of solid-state NCM811/Li batteries. Herein, we propose a chemically stable ceramic-polymer-anchored solvent composite electrolyte with high ionic conductivity of 6.0x10(-4) S cm(-1), which enables the solid-state NCM811/Li batteries to cycle 1500 times. The Li1.4Al0.4Ti1.6(PO4)(3) nanowires (LNs) can tightly anchor the essential N, N-dimethylformamide (DMF) in poly(vinylidene fluoride) (PVDF), greatly enhancing its electrochemical stability and suppressing the side reactions. We identify the ceramic-polymer-liquid multiple ion transport mechanism of the LNs-PVDF-DMF composite electrolyte by tracking the Li-6 and Li-7 substitution behavior via solid-state NMR. The stable interface chemistry and efficient ion transport of LNs-PVDF-DMF contribute to superior performances of the solid-state batteries at wide temperature range of -20-60 degrees C.

引用

页码：24668 / 24675

页数：8

共 58 条

[1]

[Anonymous], 2021, ANGEW CHEM, V133, P13041

[2]

[Anonymous], 2016, ANGEW CHEM, V128, P12726

[3] Building better batteries [J].