▎ 摘　　要

NOVELTY - Cobalt-sulfur hydrogen storage composite material comprises porous polyaniline/reduced graphene oxide, which are self-assembled to form a three-dimensional network structure, and uniformly doped in the cobalt-sulfur alloy. The composite material is expressed as (I). USE - The cobalt-sulfur hydrogen storage composite material is useful for nickel-hydrogen battery. ADVANTAGE - The material: has good hydrogen storage performance, high discharge capacity and long service life. DETAILED DESCRIPTION - Cobalt-sulfur hydrogen storage composite material comprises reduced graphene oxide and porous polyaniline self-assembled to obtain a 3-dimensional network structure, and uniformly doped in the cobalt-sulfur alloy, where the composite material is expressed as Co9 S8+x wt.% nanoporous carbon/reduced graphene oxide, x = 3-10. . An INDEPENDENT CLAIM is also included for preparing cobalt-sulfur hydrogen storage composite material.