Investigation of microstructures of ZnCo2O4 on bare Ni foam and Ni foam coated with graphene and their supercapacitors performance

Jinlong Lv, Tongxiang Liang, Meng Yang, Suzuki Ken, Miura Hideo

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The graphene coating was deposited on the surface of Ni foam using the chemical vapor deposition process. A large amount of flower-like ZnCo2O4 microspheres with short nanowires were formed on bare Ni foam by hydrothermal method, while large-scale ZnCo2O4 nanowires arrays homogeneously aligned and separated adequately on Ni foam coated with graphene. This ZnCo2O4 nanowire structure exhibited superior supercapacitors properties. The excellent supercapacitors were mainly attributed to the large specific surface and the porosity on the nanowires which promoted the electrons and ions transportation. In addition, graphene improved conductivity of substrate for current collecting.

Original languageEnglish
Pages (from-to)330-335
Number of pages6
JournalJournal of Energy Chemistry
Volume26
Issue number3
DOIs
Publication statusPublished - 2017 May

Keywords

  • Graphene
  • Hydrothermal
  • Ni foam
  • Supercapacitive
  • Surface analysis

ASJC Scopus subject areas

  • Fuel Technology
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Electrochemistry

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