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Manipulating Interfacial Nanostructure to Achieve High‐Performance All‐Solid‐State Lithium‐Ion Batteries
Author(s) -
Wang Changhong,
Li Xia,
Zhao Yang,
Banis Mohammad N.,
Liang Jianwen,
Li Xiaona,
Sun Yipeng,
Adair Keegan R.,
Sun Qian,
Liu Yulong,
Zhao Feipeng,
Deng Sixu,
Lin Xiaoting,
Li Ruying,
Hu Yongfeng,
Sham TsunKong,
Huang Huan,
Zhang Li,
Yang Rong,
Lu Shigang,
Sun Xueliang
Publication year - 2019
Publication title -
small methods
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.66
H-Index - 46
ISSN - 2366-9608
DOI - 10.1002/smtd.201900261
Subject(s) - electrolyte , nanostructure , materials science , lithium (medication) , electrode , faraday efficiency , electrochemistry , ion , nanotechnology , chemical engineering , chemistry , medicine , organic chemistry , endocrinology , engineering
All‐solid‐state lithium‐ion batteries (ASSLIBs) have gained substantial attention worldwide due to their intrinsic safety and high energy density. However, the large interfacial resistance of ASSLIBs, which originates from the interfacial reactions and inferior electrode–electrolyte contact between electrodes and solid electrolytes, dramatically constrains their electrochemical performance. Here a dual shell interfacial nanostructure is rationally designed to enable high‐performance ASSLIBs, in which the inner shell LiNbO 3 suppresses the interfacial reactions while the outer shell Li 10 GeP 2 S 12 enables intimate electrode–electrolyte contact. As a result, the dual shell structured Li 10 GeP 2 S 12 @LiNbO 3 @LiCoO 2 exhibits a high initial specific capacity of 125.8 mAh g −1 (1.35 mAh cm −2 ) with an initial Coulombic efficiency of 90.4% at 0.1 C and 87.7 mAh g −1 at 1 C. More importantly, in situ X‐ray absorption near edge spectroscopy was performed for the first time to reveal the interfacial reactions between Li 10 GeP 2 S 12 and LiCoO 2 . This dual shell nanostructure demonstrates an ideal interfacial configuration for realizing high‐performance ASSLIBs.