Amorphization-induced surface electronic states modulation of cobaltous oxide nanosheets for lithium-sulfur batteries.

ABSTRACT: Lithium-sulfur batteries show great potential to achieve high-energy-density storage, but their long-term stability is still limited due to the shuttle effect caused by the dissolution of polysulfides into electrolyte. Herein, we report a strategy of significantly improving the polysulfides adsorption capability of cobaltous oxide by amorphization-induced surface electronic states modulation. The amorphous cobaltous oxide nanosheets as the cathode additives for lithium-sulfur batteries demonstrates the rate capability and cycling stability with an initial capacity of 1248.2 mAh g^-1 at 1 C and a substantial capacity retention of 1037.3 mAh g^-1 after 500 cycles. X-ray absorption spectroscopy analysis reveal that the coordination structures and symmetry of ligand field a

SUBMITTER: Li R 

PROVIDER: S-EPMC8149689 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature