Advanced Powder Technology, Vol.30, No.10, 2285-2292, 2019
A facile synthesis of alpha-Ni(OH)(2)-CNT composite films for supercapacitor application
The alpha-Ni(OH)(2)-CNT composite films have been successfully synthesized by a simple chemical method and their supercapacitive properties were investigated by variation of CNT. The structural, compositional, morphological, wettability and electrochemical properties of the composite films were studied by using various characterization techniques. X-ray diffraction analysis revealed that the synthesized composite films are polycrystalline in nature. FT-Raman spectroscopy result showed the characteristic Raman band of CNT and alpha-Ni(OH)(2) which confirmed the formation of alpha-Ni(OH)(2)-CNT composite. SEM micrographs showed porous microstructure of the synthesized films and hydrophilic nature of the films was confirmed from wettability studies. Furthermore, the effect of the variation of CNT on the electrochemical properties of the synthesized composite films was discussed. The electrochemical performance of the composite films was studied by using cyclic voltammetry (CV) and Galvanostatic charge-discharge (GCD) techniques. The alpha-Ni(OH)(2)-CNT composite showed highest specific capacitance of 544 F g(-1) with high retention capability of 85% after 1500th cycle and excellent cycling stability. (C) 2019 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.