Atomic-scale regulation of anionic and cationic migration in alkali metal batteries.

ABSTRACT: The regulation of anions and cations at the atomic scale is of great significance in membrane-based separation technologies. Ionic transport regulation techniques could also play a crucial role in developing high-performance alkali metal batteries such as alkali metal-sulfur and alkali metal-selenium batteries, which suffer from the non-uniform transport of alkali metal ions (e.g., Li⁺ or Na⁺) and detrimental shuttling effect of polysulfide/polyselenide anions. These drawbacks could cause unfavourable growth of alkali metal depositions at the metal electrode and irreversible consumption of cathode active materials, leading to capacity decay and short cycling life. Herein, we propose the use of a polypropylene separator coated with negatively charged Ti_0.87O

SUBMITTER: Xiong P 

PROVIDER: S-EPMC8263716 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature