Supercritical CO₂ Synthesis of Freestanding Se_1-x S _x Foamy Cathodes for High-Performance Li-Se_1-x S _x Battery.

ABSTRACT: Selenium-sulfur solid solutions (Se_1-x S _x ) are considered to be a new class of promising cathodic materials for high-performance rechargeable lithium batteries owing to their superior electric conductivity than S and higher theoretical specific capacity than Se. In this work, high-performance Li-Se_1-x S _x batteries employed freestanding cathodes by encapsulating Se_1-x S _x in a N-doped carbon framework with three-dimensional (3D) interconnected porous structure (NC@SWCNTs) are proposed. Se_1-x S _x is uniformly dispersed in 3D porous carbon matrix with the assistance of supercritical CO₂ (SC-CO₂) technique. Impressively, NC@SWC

SUBMITTER: Lu C 

PROVIDER: S-EPMC8355597 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature