A Lithium Superionic Sulfide Cathode for Lithium-Sulfur Batteries

Journal Article · Tue Jan 01 00:00:00 EST 2013 · ACS Nano

OSTI ID:1068093

Lin, Zhan ^[1]; Liu, Zengcai ^[1]; Dudney, Nancy J ^[1]; Liang, Chengdu ^[1]

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1. ORNL

This work presents a facile synthesis approach for core-shell structured Li2S nanoparticles, which have Li2S as the core and Li3PS4 as the shell. This material functions as lithium superionic sulfide (LSS) cathode for long-lasting, energy-efficient lithium-sulfur (Li-S) batteries. The LSS has an ionic conductivity of 10-7 S cm-1 at 25 oC, which is 6 orders of magnitude higher than that of bulk Li2S (~10-13 S cm-1). The high lithium-ion conductivity of LSS imparts an excellent cycling performance to all-solid Li-S batteries, which also promises safe cycling of high-energy batteries with metallic lithium anodes.

• 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: 1068093
• Journal Information: ACS Nano, Journal Name: ACS Nano
• Country of Publication: United States
• Language: English

Related Subjects

batteries
energy storage
solid electrolytes