Advanced Supercapacitors Based on ?-Ni(OH)2 Nanoplates/Graphene Composite Electrodes with High Energy and Power Density
By Wang, Fenglin; Liu, Xiaohe; Chen, Fashen; Wan, Hao; Lin, Yifan; Zhang, Ning; Ma, Renzhi
Published in ACS Applied Energy Materials
Abstract
In order to solve the lack of energy sources, researchers devote themselves to the study of green renewable and economical supercapacitors. We demonstrate herein that the ?-Ni(OH)2 nanoplates/graphene composites are fabricated as active electrodes in supercapacitors with excellent cycling stability, high energy density, and power density. The advantages of graphene can complement the shortcomings of ?-Ni(OH)2 nanoplates to compose a novel composite. The ?-Ni(OH)2 nanoplates/graphene composite presents a high specific capacitance of 1954 F g