Unveiling the critical role of interfacial ionic conductivity in all-solid-state lithium batteries

被引：73

作者：

Wang, Changhong ^{[1
]}

Liang, Jianwen ^{[1
]}

Hwang, Sooyeon ^{[2
]}

Li, Xiaona ^{[1
]}

Zhao, Yang ^{[1
]}

Adair, Keegan ^{[1
]}

Zhao, Changtai ^{[1
]}

Li, Xia ^{[1
]}

Deng, Sixu ^{[1
]}

Lin, Xiaoting ^{[1
]}

Yang, Xiaofei ^{[1
]}

Li, Ruying ^{[1
]}

Huang, Huan ^{[3
]}

Zhang, Li ^{[4
]}

Lu, Shigang ^{[4
]}

Su, Dong ^{[2
]}

Sun, Xueliang ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Mech & Mat Engn, 1151 Richmond St, London, ON N6A 3K7, Canada

[2] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA

[3] Glabat Solid State Battery Inc, 700 Collip Circle, London, ON N6G 4X8, Canada

[4] China Automot Battery Res Inst Co Ltd, 5th Floor,43 Min Bldg,North Sanhuan Middle Rd, Beijing 100088, Peoples R China

来源：

NANO ENERGY | 2020年 / 72卷

基金：

加拿大创新基金会; 加拿大自然科学与工程研究理事会;

关键词：

Interfacial ionic conductivity; Ion transport kinetics; Li+ diffusivity; All-solid-state batteries; LIQUID-PHASE TECHNIQUE; SUPERIONIC CONDUCTORS; LICOO2; CATHODES; ELECTROLYTES; ELECTRODES; STABILITY; TRANSPORT;

D O I：

10.1016/j.nanoen.2020.104686

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Advancement of all-solid-state lithium-ion (Li+) batteries (ASSLIBs) has been hindered by the large interfacial resistance mainly originating from interfacial reactions between oxide cathodes and solid-state sulfide electrolytes (SEs). To suppress the interfacial reactions, an interfacial coating layer between cathodes and SEs is indispensable. However, the kinetics of interfacial Li+ transport across the coating layer has not been well understood yet. Herein, we tune the interfacial ionic conductivity of the coating layer LiNb0.5Ta0.5O3 (LNTO) by manipulating post-annealing temperature. It is found that the interfacial ionic conductivity determines interfacial Li+ transport kinetics and enhancing the interfacial ionic conductivity can significantly boost the electrochemical performance of SE-based ASSLIBs. A representative cathode LiNi0.5Mn0.3Co0.2O2 coated by LNTO with the highest interfacial ionic conductivity exhibits a high initial capacity of 152 mAh.g(-1) at 0.1 C and 107.5 mAh. g(-1) at 1 C. This work highlights the importance of increasing interfacial ionic conductivity for high-performance SE-based ASSLIBs.

引用

页数：6

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