Air-Stable, High-Conduction Solid Electrolytes of Arsenic-Substituted Li4SnS4

Journal Article · Wed Jan 01 00:00:00 EST 2014 · Energy and Environmental Science

DOI:https://doi.org/10.1039/c3ee43357a· OSTI ID:1121809

Sahu, Gayatri ^[1]; Lin, Zhan ^[1]; Li, Juchuan ^[1]; Liu, Zengcai ^[1]; Dudney, Nancy J ^[1]; Liang, Chengdu ^[1]

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1. ORNL

Lithium-ion-conducting solid electrolytes show promise for enabling high-energy secondary battery chemistries and solving safety issues associated with conventional lithium batteries. Achieving the combination of high ionic conductivity and outstanding chemical stability in solid electrolytes is a grand challenge for the synthesis of solid electrolytes. Herein we report the design of aliovalent substitution of Li4SnS4 to achieve high conduction and excellent air stability based on the hard and soft acids and bases theory. The composition of Li3.833Sn0.833As 0.166S4 has a high ionic conductivity of 1.39 mS/cm 1 at 25 C. Considering the high Li+ transference number, this phase conducts Li+ as well as carbonate-based liquid electrolytes. This research also addresses the compatibility of the sulfide-based solid electrolytes through chemical passivation.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1121809
• Journal Information: Energy and Environmental Science, Vol. 7, Issue 3; ISSN 1754--5692
• Country of Publication: United States
• Language: English

Related Subjects

solid electrolyte
lithium batteries
energy storage