Electrodeposited Sulfur and Co_xS Electrocatalyst on Buckypaper as High-Performance Cathode for Li-S Batteries.

ABSTRACT: Lithium-sulfur batteries (LSBs) are considered as the next generation of advanced rechargeable batteries because of their high energy density. In this study, sulfur and Co_xS electrocatalyst are deposited on carbon nanotube buckypaper (S/Co_xS/BP) by a facile electrodeposition method and are used as a binder-free high-performance cathode for LSBs. Elemental sulfur is deposited on buckypaper by electrooxidation of a polysulfide solution (~ S₆^2-). This approach substantially increased the current and time efficiency of sulfur electrochemical deposition on conductive material for LSBs. S/Co_xS/BP cathode could deliver an initial discharge capacity as high as 1650 mAh g^-1 at 0.1 C, which is close to the theoretical capacity of sulf

SUBMITTER: Zhan Y 

PROVIDER: S-EPMC7770841 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature