Electrochemical stability and ionic conductivity of solid electrolytes based on Li10GeP2S12-xAx (A=O, Se. x=0, 0.2, 0.4, 0.6, 0.8, 1)

Shipai SONG, Zongkai YAN, Fang WU, Xiaokun ZHANG, Yong XIANG*

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

1 Citation (Scopus)

Abstract

The compositions Li10GeP2S12-xAx (A = O, Se) solid electrolytes were synthesized. As x inreases, the ionic conductivity of the Li10GeP2S12-xOx samples decreases from 2.8 mS/cm to 1.09 mS/cm. Li10GeP2S11.8Se0.2 has the highest ionic conductivity, 3.43 mS/cm, and the activation energy of 0.143 eV. The electrochemical stability is Li10GeP2S11.6O0.4 > Li10GeP2S12 > Li10GeP2S11.8Se0.2, and the electrochemical window of Li10GeP2S11.6O0.4 is about 1.40 - 3.00 V. The difference in electrochemical properties of Li10GeP2S12-xAx (A = O, Se) can be used as a way to improve the interface of Li10GeP2S12-type solid batteries.

Original languageEnglish
Article number012074
Number of pages8
JournalIOP Conference Series: Earth and Environmental Science
Volume461
Issue number1
DOIs
Publication statusE-pub ahead of print - 23 Apr 2020
Externally publishedYes
Event2019 5th International Conference on Energy Equipment Science and Engineering, ICEESE 2019 - Harbin, China
Duration: 29 Nov 20191 Dec 2019

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© Published under licence by IOP Publishing Ltd.

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