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An Air‐Stable Na 3 SbS 4 Superionic Conductor Prepared by a Rapid and Economic Synthetic Procedure
Author(s) -
Wang Hui,
Chen Yan,
Hood Zachary D.,
Sahu Gayatri,
Pandian Amaresh Samuthira,
Keum Jong Kahk,
An Ke,
Liang Chengdu
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201601546
Subject(s) - electrolyte , fast ion conductor , ionic conductivity , electrochemistry , anode , materials science , ionic bonding , sulfide , energy storage , inorganic chemistry , chemical engineering , hsab theory , conductivity , chemistry , nanotechnology , ion , electrode , thermodynamics , organic chemistry , metallurgy , power (physics) , physics , engineering
All‐solid‐state sodium batteries, using solid electrolyte and abundant sodium resources, show great promise for safe, low‐cost, and large‐scale energy storage applications. The exploration of novel solid electrolytes is critical for the room temperature operation of all‐solid‐state Na batteries. An ideal solid electrolyte must have high ionic conductivity, hold outstanding chemical and electrochemical stability, and employ low‐cost synthetic methods. Achieving the combination of these properties is a grand challenge for the synthesis of sulfide‐based solid electrolytes. Design of the solid electrolyte Na 3 SbS 4 is described, realizing excellent air stability and an economic synthesis based on hard and soft acid and base (HSAB) theory. This new solid electrolyte also exhibits a remarkably high ionic conductivity of 1 mS cm −1 at 25 °C and ideal compatibility with a metallic sodium anode.