Open AccessSolution Synthesis of Sb2S3 and Na3SbS4 Solid-State Electrolyte
Author(s) -
Saeed Ahmadi Vaselabadi,
William Hayden Smith,
Colin A. Wolden
Publication year - 2021
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1945-7111/ac3752
Subject(s) - metathesis , electrolyte , ionic conductivity , conductivity , yield (engineering) , solvent , chemistry , amorphous solid , sodium , inorganic chemistry , fast ion conductor , salt metathesis reaction , activation energy , materials science , chemical engineering , crystallography , organic chemistry , electrode , polymerization , metallurgy , polymer , engineering
Sodium thioantimonate (Na 3 SbS 4 ) is an attractive solid-state electrolyte for sodium-ion batteries due to its high ionic conductivity and stability in protic solvents. Herein, we describe solution-based routes for its synthesis. First, we demonstrate the synthesis of the Sb 2 S 3 precursor via thermodynamically favorable metathesis between Na 2 S and SbCl 3 . This solution-based approach is further extended to couple the resulting Sb 2 S 3 with Na 2 S for the synthesis of Na 3 SbS 4 . It is shown that ethanol is a superior solvent to water for solution-based synthesis of Na 3 SbS 4 with respect to yield, morphology, and performance. Amorphous Sb 2 S 3 synthesized from low-temperature metathesis produced highly crystalline Na 3 SbS 4 with a room temperature Na + conductivity of 0.52 mS cm −1 and low activation energy, comparable to leading values reported in the literature.