A facile phase transformation method for the preparation of 3D flower-like beta-Ni(OH)(2)/GO/CNTs composite with excellent supercapacitor performance

作者:Ma Xiaowei; Liu Jiwei; Liang Chongyun; Gong Xiwen; Che Renchao*
来源:Journal of Materials Chemistry A, 2014, 2(32): 12692-12696.
DOI:10.1039/c4ta02221a

摘要

3D flower-like beta-Ni(OH)(2)/GO/CNTs composite was prepared via a facile phase transformation method with a high specific capacitance of similar to 1815 F g(-1) (nearly 96% of its theoretical pseudocapacitance) at 2 A g(-1) and a good cycling performance of similar to 97% capacitance retention after 2000 cycles at 10 A g(-1). The morphology of beta-Ni(OH)(2) undergoes successive changes that could be controlled by adjusting the reaction time.