Effect of temperature on the oxygen reduction reaction kinetic at nitrogen-doped carbon nanotubes for fuel cell cathode

W. Y. Wong, W. R.W. Daud, A. B. Mohamad, K. S. Loh

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

One of the technical challenges in commercializing proton exchange membrane fuel cell (PEMFC) technology in this century is related to cost reduction of the fuel cell components especially the cost of the electrochemical catalysts, which are normally noble metals such as Pt. Nitrogen doped carbon nanotubes (NCNT) made by doping nitrogen as an n-type dopant in carbon nanotubes, have been shown to possess catalytic activity towards oxygen reduction reaction (ORR). Functionally modified NCNT can become a cheaper alternative electrochemical catalyst that is as good as the noble metals such as Pt. Since the efficiency of the fuel cell is dependent on cell temperatures, this study looks at the effects of the temperatures towards ORR over the temperature range of 298-343K in 0.5MH<inf>2</inf>SO<inf>4</inf> on the metal-free NCNT using a thin-film rotating-ring disk electrode (RRDE). The NCNT catalysts were synthesized via chemical vapour deposition with ethylenediamine and iron phthalocyanine and post-treatment process was carried out prior to the analysis. The results showed that the optimum ORR activity in NCNT was achieved at 50°C, beyond which, the ORR activity decreased. In order to increase ORR activity beyond this temperature, the NCNT should be modified by compositing it with other metal or non-metal to improve its activity at higher temperature.

Original languageEnglish
JournalInternational Journal of Hydrogen Energy
DOIs
Publication statusAccepted/In press - 14 Feb 2015

Fingerprint

cell cathodes
Reaction kinetics
fuel cells
Fuel cells
Carbon nanotubes
reaction kinetics
Cathodes
carbon nanotubes
Nitrogen
nitrogen
Oxygen
oxygen
Temperature
temperature
Precious metals
noble metals
catalysts
Catalysts
Thermodynamic properties
Doping (additives)

Keywords

  • Electrochemical catalyst
  • Metal-free catalyst
  • NCNT
  • Oxygen reduction reaction
  • PEMFC

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

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title = "Effect of temperature on the oxygen reduction reaction kinetic at nitrogen-doped carbon nanotubes for fuel cell cathode",
abstract = "One of the technical challenges in commercializing proton exchange membrane fuel cell (PEMFC) technology in this century is related to cost reduction of the fuel cell components especially the cost of the electrochemical catalysts, which are normally noble metals such as Pt. Nitrogen doped carbon nanotubes (NCNT) made by doping nitrogen as an n-type dopant in carbon nanotubes, have been shown to possess catalytic activity towards oxygen reduction reaction (ORR). Functionally modified NCNT can become a cheaper alternative electrochemical catalyst that is as good as the noble metals such as Pt. Since the efficiency of the fuel cell is dependent on cell temperatures, this study looks at the effects of the temperatures towards ORR over the temperature range of 298-343K in 0.5MH2SO4 on the metal-free NCNT using a thin-film rotating-ring disk electrode (RRDE). The NCNT catalysts were synthesized via chemical vapour deposition with ethylenediamine and iron phthalocyanine and post-treatment process was carried out prior to the analysis. The results showed that the optimum ORR activity in NCNT was achieved at 50°C, beyond which, the ORR activity decreased. In order to increase ORR activity beyond this temperature, the NCNT should be modified by compositing it with other metal or non-metal to improve its activity at higher temperature.",
keywords = "Electrochemical catalyst, Metal-free catalyst, NCNT, Oxygen reduction reaction, PEMFC",
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T1 - Effect of temperature on the oxygen reduction reaction kinetic at nitrogen-doped carbon nanotubes for fuel cell cathode

AU - Wong, W. Y.

AU - Daud, W. R.W.

AU - Mohamad, A. B.

AU - Loh, K. S.

PY - 2015/2/14

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N2 - One of the technical challenges in commercializing proton exchange membrane fuel cell (PEMFC) technology in this century is related to cost reduction of the fuel cell components especially the cost of the electrochemical catalysts, which are normally noble metals such as Pt. Nitrogen doped carbon nanotubes (NCNT) made by doping nitrogen as an n-type dopant in carbon nanotubes, have been shown to possess catalytic activity towards oxygen reduction reaction (ORR). Functionally modified NCNT can become a cheaper alternative electrochemical catalyst that is as good as the noble metals such as Pt. Since the efficiency of the fuel cell is dependent on cell temperatures, this study looks at the effects of the temperatures towards ORR over the temperature range of 298-343K in 0.5MH2SO4 on the metal-free NCNT using a thin-film rotating-ring disk electrode (RRDE). The NCNT catalysts were synthesized via chemical vapour deposition with ethylenediamine and iron phthalocyanine and post-treatment process was carried out prior to the analysis. The results showed that the optimum ORR activity in NCNT was achieved at 50°C, beyond which, the ORR activity decreased. In order to increase ORR activity beyond this temperature, the NCNT should be modified by compositing it with other metal or non-metal to improve its activity at higher temperature.

AB - One of the technical challenges in commercializing proton exchange membrane fuel cell (PEMFC) technology in this century is related to cost reduction of the fuel cell components especially the cost of the electrochemical catalysts, which are normally noble metals such as Pt. Nitrogen doped carbon nanotubes (NCNT) made by doping nitrogen as an n-type dopant in carbon nanotubes, have been shown to possess catalytic activity towards oxygen reduction reaction (ORR). Functionally modified NCNT can become a cheaper alternative electrochemical catalyst that is as good as the noble metals such as Pt. Since the efficiency of the fuel cell is dependent on cell temperatures, this study looks at the effects of the temperatures towards ORR over the temperature range of 298-343K in 0.5MH2SO4 on the metal-free NCNT using a thin-film rotating-ring disk electrode (RRDE). The NCNT catalysts were synthesized via chemical vapour deposition with ethylenediamine and iron phthalocyanine and post-treatment process was carried out prior to the analysis. The results showed that the optimum ORR activity in NCNT was achieved at 50°C, beyond which, the ORR activity decreased. In order to increase ORR activity beyond this temperature, the NCNT should be modified by compositing it with other metal or non-metal to improve its activity at higher temperature.

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