Symposium EN08: Solid-State Batteries—Devices, Interfaces and Characterization

Hongli Zhu, Northeastern University

Mechanisms Understanding and Kinetic Enhancements of All-Solid-State Li Sulfur Batteries

Written by Atif Javaid

All solid-state lithium-sulfur batteries (ASSLSBs) deliver high energy density and are safe in handling but the associated problems are the sluggish reaction kinetics and low active material (sulfur) usage in the cathodes. Hongli Zhu, at Northeastern University, developed a polyacrylonitrile-derived porous carbon fibers (named PPCF) with a unique core–shell structure where a layer of micropores cover dense core contributing to a high specific surface area and grew MoS₂ nanosheets on it, resulting in an improved stability of the cathode. MoS₂ helps build the intimate contacts between sulfur and carbon fiber. This study pioneered a new idea of fabricating high performance ASSLSBs through developing surface functionalized and stabilized conductive carbon additives with metal sulfides.