Electrochemical studies of hydrogen evolution, storage and oxidation on carbon nanotube electrodes

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Abstract

Carbon nanotube films produced on a Si(1 0 0) substrate without any metal catalyst were used as electrodes in galvanic cells. The electrochemical mechanism of hydrogen evolution, storage and oxidation was studied using cyclic voltammetry and galvanostatic polarisation. Cyclic voltammetry showed that hydrogen is easily produced on the carbon nanotube surface, but a significant overvoltage was observed for hydrogen oxidation. The kinetics of hydrogen evolution influenced the quantity of hydrogen stored in the nanotube, which increased with increasing discharge currents. © 2003 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)265 - 269
Number of pages5
JournalJournal of Power Sources
Volume118
Issue number1-2
DOIs
Publication statusPublished - 25 May 2003

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All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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