CZTS Decorated on Graphene Oxide as an Efficient Electrocatalyst for High-Performance Hydrogen Evolution Reaction.

ABSTRACT: Cu₂ZnSnS₄ (CZTS) was synthesized by the sonochemical method using 2-methoxyethanol as the solvent and subsequently decorated onto graphene oxide (GO synthesized by the modified Hummers' method) using two different approaches such as in situ growth and ex situ synthesis followed by deposition. Preliminary characterizations indicated that the synthesized CZTS belongs to the kesterite structure with a sphere-like morphology. The in situ-synthesized CZTS/GO (I-CZTS/GO) composite is used as an efficient electrocatalyst for hydrogen evolution reaction (HER) which revealed superior electrocatalytic activity with a reduced overpotential (39.3 mV at 2 mA cm^-2), Tafel slope (70 mV dec^-1), a larger exchange current density of 908 mA cm^-2, and cha

SUBMITTER: Digraskar RV 

PROVIDER: S-EPMC6648106 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature