AUTHOR=Gu Xingxing , Deng Lan , Ren Xiaolei 

TITLE=Metal Atom-Decorated Carbon Nanomaterials for Enhancing Li-S/Se Batteries Performances: A Mini Review

JOURNAL=Frontiers in Energy Research

VOLUME=Volume 9 - 2021

YEAR=2021

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2021.626596

DOI=10.3389/fenrg.2021.626596

ISSN=2296-598X

ABSTRACT=Lithium-sulfur (Li-S) and lithium-selenium (Li-Se) batteries are both facing the cathode issues of low Coulombic efficiency and unstable cycling stability due to the severe shuttle effect of lithium polysulfides or lithium polyselenides. Simultaneously inhibiting polysulfides/polyselenides dissolution in organic electrolytes and propelling them conversion via introducing polar, catalytic materials has been proven as an effective strategy to enhance the durability of the Li-S and Li-Se batteries. In this mini review, we systematically introduce various metal atoms decorated carbon nanomaterials that how to enhance the electrochemical performances of Li-S and Li-Se batteries by inhibiting the polysulfides/polyselenides shuttle phenomenon as well as catalytic them quick redox conversions. We also briefly conclude the drawbacks and bottlenecks of this kind materials used in Li-S and Li-Se batteries.