چکیده
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Hydrogen evolution reaction (HER) plays a decisive role in a range of electrochemical and
photoelectrochemical devices. In this work graphene nanosheets and deposited on CP(carbon paper) via
electrochemical method and the nickel is deposited on the graphene CP. SEM images show the
cauliflower image for nickel in the absence of graphene. but deposition of nickel on graphene based CP
shows the nanoparticles without any specific shapes. electrochemical response by CV(cyclic
voltammetry), LSV(linear sweep voltammetry), CA(chronoamperometry), and EIS(electrochemical
impedance spectroscopy) in the presence of graphene and nickel shows a significant reduction onset
potential hydrogen evolution reaction and increase current density. the as-prepared composite NiRGO
exhibits much better electrocatalytic for HER activities than single Ni due to a great synergetic effect of
RGO and Ni for HER.
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