Ni(OH)2/N-rGO

Ni(OH)2/N-rGO;Ni(OH)2/N-reduced graphene oxide from ruixi.One-step hydrothermal method was used to fabricate a series of nickel hydroxide and nitrogen reduced graphene oxide composites (NGs) under different reaction time.The structure and physicochemical properties of the materials were characterized by XRD, FT-IR, Raman, XPS, SEM and N2-BET methods.The results show that the Ni (OH) 2 crystallites in the as-prepared material increased with the increase of reaction time, and the composites had mesoporous characteristics.The results of cyclic volt-ampere, charge-discharge and life test under three-electrode system show that the maximum capacitance of the series materials was 1 280F/g (NG-2) when the reaction time was 2h.The capacitance increased first and then decreased with the increasing reaction time, indicating that the capacitance of the materials would be related to the pore characteristics of the composite, Ni (OH) 2 grain size and the doping N atoms.

msds of Ni(OH)2/N-rGO