title: Lithium superionic sulfide cathode for all-solid lithium-sulfur batteries.
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.
authors: Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6124, United States.
authors: Zhan
authors: Z
authors: Lin
authors: Zengcai
authors: Z
authors: Liu
authors: Nancy J
authors: NJ
authors: Dudney
authors: Chengdu
authors: C
authors: Liang