Open AccessStabilizing the Interface between Sodium Metal Anode and Sulfide-Based Solid-State Electrolyte with an Electron-Blocking Interlayer
Author(s) -
Pu Hu,
Ye Zhang,
Xiaowei Chi,
Karun K. Rao,
Fang Hao,
Hui Dong,
Fangmin Guo,
Yang Ren,
Lars C. Grabow,
Yan Yao
Publication year - 2019
Publication title -
acs applied materials and interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.535
H-Index - 228
eISSN - 1944-8252
pISSN - 1944-8244
DOI - 10.1021/acsami.8b19984
Subject(s) - materials science , anode , electrolyte , sulfide , metal , blocking (statistics) , sodium , interface (matter) , solid state , chemical engineering , inorganic chemistry , fast ion conductor , electrode , metallurgy , engineering physics , chemistry , composite material , engineering , statistics , mathematics , capillary number , capillary action
Sulfide-based Na-ion conductors are promising electrolytes for all-solid-state sodium batteries (ASSSBs) because of high ionic conductivity and favorable formability. However, no effective strategy has been reported for long-duration Na cycling with sulfide-based electrolytes because of interfacial challenges. Here we demonstrate that a cellulose-poly(ethylene oxide) (CPEO) interlayer can stabilize the interface between sulfide electrolyte (Na 3 SbS 4 ) and Na by shutting off the electron pathway of the electrolyte decomposition reaction. As a result, we achieved stable Na plating/stripping for 800 cycles at 0.1 mA cm -2 in all-solid-state devices at 60 °C.
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