In situ fabrication of a graphene-coated three-dimensional nickel oxide anode for high-capacity lithium-ion batteries.

ABSTRACT: The high theoretical specific capacity of nickel oxide (NiO) makes it attractive as a high-efficiency electrode material for electrochemical energy storage. However, its application is limited due to its inferior electrochemical performance and complicated electrode fabrication process. Here, we developed an in situ fabrication of a graphene-coated, three-dimensional (3D) NiO-Ni structure by simple chemical vapor deposition (CVD). We synthesized NiO layers on Ni foam through a thermal oxidation process; subsequently, we grew graphene layers directly on the surface of NiO after a hydrogen-assisted reduction process. The uniform graphene coating renders high electrical conductivity, structural flexibility and high elastic modulus at atomic thickness. The graphene-coated 3D NiO-Ni stru

SUBMITTER: Kang C 

PROVIDER: S-EPMC9078377 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature