Lithium superionic sulfide cathode for all-solid lithium-sulfur batteries

Zhan Lin; Zengcai Liu; Nancy J Dudney; Chengdu Liang

doi:10.1021/nn400391h

Lithium superionic sulfide cathode for all-solid lithium-sulfur batteries

ACS Nano. 2013 Mar 26;7(3):2829-33. doi: 10.1021/nn400391h. Epub 2013 Mar 1.

Authors

Zhan Lin¹, Zengcai Liu, Nancy J Dudney, Chengdu Liang

Affiliation

¹ Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6124, United States.

PMID: 23427822
DOI: 10.1021/nn400391h

Abstract

This work presents a facile synthesis approach for core-shell structured Li2S nanoparticles with 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 °C, 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.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.