Abstract
The redox behavior of Cu2S in a Li2S-dissolving aprotic electrolyte was investigated to examine the practical viability of rechargeable batteries using sulfide ions as carrier ions. We established aprotic electrolytes, dimethyl sulfoxide and dimethylformamide containing S2− at over 0.10 M concentration by adding NH4NO3 to increase the solubility of Li2S, which is hardly soluble in almost all aprotic solvents. Two redox reactions of Cu2S, Cu/Cu2S and Cu2S/CuS, were observed at −0.25 V and 0.60 V vs Mo, respectively. In addition, it was found that elemental S is electrodeposited/stripped at approximately 0.1 V vs Mo on graphite but not on platinum.
Funder
MISTI Hayashi Seed Fund
The University of Tokyo
Advanced Low Carbon Technology Research and Development Program
Publisher
The Electrochemical Society
Subject
Materials Chemistry,Electrochemistry,Surfaces, Coatings and Films,Condensed Matter Physics,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献