Composite supercapacitor electrodes by electrodeposition of MnO2 on MWCNT felt directly grown on aluminum

Reza Kavian, Antonello Vicenzo, Massimiliano Bestetti

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Manganese oxide \ carbon nanotube (CNT) thin film electrodes were fabricated by direct growth of a carbon nanotube layer on aluminum substrate (i.e. a commercially viable material for use as current collector) by chemical vapor deposition, in the presence of an electrochemically deposited thin film nickel catalyst, followed by anodic electrodeposition of MnO2. A proof of concept of this approach is demonstrated showing that the fabrication process, even in its simplest and unsophisticated implementation-notably without any deliberate effort to control the CNT growth arrangement and consequently the composite microstructure-allows the preparation of MnO2/CNT/Al prototype electrodes having almost a three-fold increase in capacitance compared to MnO2/Ni electrodes and, more significantly, comparing favorably with composite electrodes of similar design and fabrication. MnO2/CNT/Al electrodes ensured also improved cyclic stability compared to the reference case of MnO2/Ni electrodes. The proposed scheme is an effective procedure for the fabrication of thin film composite MnO2/CNT/Al electrodes, which may be amenable to significant improvements by tailoring thickness and microstructure of the CNT scaffold and manganese oxide film. Furthermore, a similar process scheme, may be proposed for the fabrication of active electrodes of different scopes with a proper choice of the substrate.

Original languageEnglish
Pages (from-to)43-48
Number of pages6
JournalJournal of New Materials for Electrochemical Systems
Volume18
Issue number1
Publication statusPublished - 2015
Externally publishedYes

Fingerprint

Carbon Nanotubes
Aluminum
Electrodeposition
Carbon nanotubes
Electrodes
Composite materials
Fabrication
Manganese oxide
Thin films
Microstructure
Supercapacitor
Substrates
Nickel
Scaffolds
Oxide films
Chemical vapor deposition
Capacitance
Catalysts

Keywords

  • Carbon nanotubes
  • Composite electrode film
  • Direct growth
  • Manganese oxide
  • Metal substrate

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Electrochemistry

Cite this

Composite supercapacitor electrodes by electrodeposition of MnO2 on MWCNT felt directly grown on aluminum. / Kavian, Reza; Vicenzo, Antonello; Bestetti, Massimiliano.

In: Journal of New Materials for Electrochemical Systems, Vol. 18, No. 1, 2015, p. 43-48.

Research output: Contribution to journalArticle

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