High electrochemical performance of hybrid cobalt oxyhydroxide/nickel foam graphene

Tshifhiwa M Masikhwa; Moshawe J Madito; Damilola Momodu; Abdulhakeem Bello; Julien K Dangbegnon; Ncholu Manyala

doi:10.1016/j.jcis.2016.08.069

High electrochemical performance of hybrid cobalt oxyhydroxide/nickel foam graphene

J Colloid Interface Sci. 2016 Dec 15:484:77-85. doi: 10.1016/j.jcis.2016.08.069. Epub 2016 Aug 29.

Authors

Tshifhiwa M Masikhwa¹, Moshawe J Madito¹, Damilola Momodu¹, Abdulhakeem Bello¹, Julien K Dangbegnon¹, Ncholu Manyala²

Affiliations

¹ Department of Physics, Institute of Applied Materials, SARCHI Chair in Carbon Technology and Materials, University of Pretoria, Pretoria 0028, South Africa.
² Department of Physics, Institute of Applied Materials, SARCHI Chair in Carbon Technology and Materials, University of Pretoria, Pretoria 0028, South Africa. Electronic address: ncholu.manyala@up.ac.za.

PMID: 27592188
DOI: 10.1016/j.jcis.2016.08.069

Abstract

In this study, we report the in-situ hydrothermal synthesis of mesoporous nanosheets of cobalt oxyhydroxide (CoOOH) on nickel foam graphene (Ni-FG) substrate, obtained via atmospheric pressure chemical vapour deposition (AP-CVD). The produced composite were closely interlinked with Ni-FG, which enhances the synergistic effect between graphene and the metal hydroxide, CoOOH. It is motivating that the synthesized CoOOH on the Ni-FG substrate showed a homogenous coating of well-ordered intersected nanosheets with porous structure. The electrochemical properties of the material as electrode showed a maximum specific capacity of 199mAhg^-1 with a capacity retention of 98% after 1000 cycling in a three electrode measurements.

Keywords: CoAl-LDH; Cobalt oxyhydroxide; Graphene foam; Hybrid electrode; Ni-foam graphene.