MOF-derived Cobalt Sulfide Grown on 3D Graphene Foam as an Efficient Sulfur Host for Long-Life Lithium-Sulfur Batteries.

ABSTRACT: Lithium-sulfur (Li-S) batteries are an appealing candidate for advanced energy storage systems because of their high theoretical energy density and low cost. However, rapid capacity decay and short cycle life, mainly resulting from polysulfide dissolution, remains a great challenge for practical applications. Herein, we present a metal-organic framework (MOF)-derived Co₉S₈ array anchored onto a chemical vapor deposition (CVD)-grown three-dimensional graphene foam (Co₉S₈-3DGF) as an efficient sulfur host for long-life Li-S batteries with good performance. Without polymeric binders, conductive additives, or metallic current collectors, the free-standing Co₉S₈-3DGF/S cathode achieves a high areal capacity of 10.9 mA hr cm^-

SUBMITTER: He J 

PROVIDER: S-EPMC6146594 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature