화학공학소재연구정보센터
Solid State Ionics, Vol.285, 51-58, 2016
NMR studies on lithium ion migration in sulfide-based conductors, amorphous and crystalline Li3PS4
Li-7 spectra were observed for amorphous and crystalline Li3PS4 to study the structure of lithium ions. Lithium migration was studied using pulsed-gradient spin-echo Li-7 NMR between 30 degrees C and 120 degrees C. The lithium diffusion behavior depended on the observation time and the pulsed-field gradient strength, and was quite different from the lithium diffusion in liquid electrolytes. Amorphous Li3PS4 showed higher ionic conductivity than crystalline Li3PS4, and similarly, the lithium diffusion rate was faster in amorphous samples. The lithium diffusion behavior in both conductors was not uniform and was distributed widely in time and space. (C) 2015 Elsevier B.V. All rights reserved.