Synthesis and electrochemical behavior of nanostructured cauliflower-shape Co-Ni/Co-Ni oxides composites

Vinay Gupta, Toshikazu Kawaguchi, Norio Miura

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Nanostructured Co-Ni/Co-Ni oxides were electrochemically deposited onto stainless steel electrode by electrochemical method and characterized for their structural and supercapacitive properties. The SEM images indicated that the obtained Co-Ni/Co-Ni oxides had cauliflower-type nanostructure. The X-ray diffraction pattern showed the formation of Co3O4, NiO, Co and Ni. The EDX elemental mapping images indicated that Ni, Co and O are distributed uniformly. The deposited Co-Ni/Co-Ni oxides showed good supercapacitive characteristics with a specific capacitance of 331 F/g at 1 mA/cm2 current density in 1 M KOH electrolyte. A mechanism of the formation of cauliflower-shape Co-Ni/Co-Ni oxides was proposed. A variety of promising applications in the fields such as energy storage devices and sensors can be envisioned from Co-Ni/Co-Ni oxides.

Original languageBritish English
Pages (from-to)202-206
Number of pages5
JournalMaterials Research Bulletin
Volume44
Issue number1
DOIs
StatePublished - 8 Jan 2009

Keywords

  • A. Nanostructures
  • A. Oxides
  • B. Chemical synthesis
  • C. Electrochemical measurements
  • D. Electrochemical properties

Fingerprint

Dive into the research topics of 'Synthesis and electrochemical behavior of nanostructured cauliflower-shape Co-Ni/Co-Ni oxides composites'. Together they form a unique fingerprint.

Cite this