Authors: Shilei Gong Qing Cao Li′e Jin Cungui Zhong Xiaohua Zhang
Publish Date: 2015/11/23
Volume: 20, Issue: 3, Pages: 619-628
Abstract
Threedimensional NiOH2 nanoflakes were prepared via a facile and costeffective electrodeposition method using commercial activated carbon AC as substrate Nitric acid treatment NT and partial crystallization PC by metal nickel catalysis were applied for AC The effects of the oxygencontaining functional groups and the degree of crystallization on the electrochemical performance of the electrode were investigated The resulting NiOH2/PC–NT–AC/nickel foam electrode exhibits distinct performance with a specific capacitance of 2971 F/g scaled to the mass of active NiOH2 at a current density of 6 A/g A high capacitance of 1919 F/g was still achieved even at 40 A/g which is much higher than NiOH2/AC/nickel foam electrode and NiOH2/NT–AC/nickel foam electrode The excellent performance of NiOH2/PC–NT–AC/nickel foam electrode can be attributed to the presence of large surface area and highly conductive PC–NT–AC network on nickel foam This study presents an effective method to improve the dispersion and rate capability of NiOH2 nanostructure electrodes
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