Studies on Co-based catalysts supported on modified carbon substrates for PEMFC cathodes

Nalini P. Subramanian, Swaminatha P. Kumaraguru, Hector Colon-Mercado, Hansung Kim, Branko N. Popov, Timothy Black, Donna A. Chen

Research output: Contribution to journalArticle

158 Citations (Scopus)

Abstract

Cobalt based non-precious metal catalysts were prepared by supporting cobalt-ethylene diamine complex on carbon followed by a heat treatment at elevated temperatures (800 °C). Surface oxygen groups on carbon were introduced with HNO3 oxidation. Co catalysts supported on oxidized carbon showed improved activity and selectivity towards four-electron reduction of molecular oxygen. Quinone groups introduced by nitric acid treatment, in addition to increasing the dispersion of the chelate complexes, play a role in forming the active site for oxygen reduction.

Original languageEnglish
Pages (from-to)56-63
Number of pages8
JournalJournal of Power Sources
Volume157
Issue number1
DOIs
Publication statusPublished - 2006 Jun 19

Fingerprint

Proton exchange membrane fuel cells (PEMFC)
Catalyst supports
Cathodes
Carbon
cathodes
Cobalt
catalysts
carbon
oxygen
Substrates
cobalt
Oxygen
Nitric Acid
Diamines
Molecular oxygen
nitric acid
quinones
ethylenediamine
Nitric acid
chelates

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

Cite this

Subramanian, N. P., Kumaraguru, S. P., Colon-Mercado, H., Kim, H., Popov, B. N., Black, T., & Chen, D. A. (2006). Studies on Co-based catalysts supported on modified carbon substrates for PEMFC cathodes. Journal of Power Sources, 157(1), 56-63. https://doi.org/10.1016/j.jpowsour.2005.07.031
Subramanian, Nalini P. ; Kumaraguru, Swaminatha P. ; Colon-Mercado, Hector ; Kim, Hansung ; Popov, Branko N. ; Black, Timothy ; Chen, Donna A. / Studies on Co-based catalysts supported on modified carbon substrates for PEMFC cathodes. In: Journal of Power Sources. 2006 ; Vol. 157, No. 1. pp. 56-63.
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Subramanian, NP, Kumaraguru, SP, Colon-Mercado, H, Kim, H, Popov, BN, Black, T & Chen, DA 2006, 'Studies on Co-based catalysts supported on modified carbon substrates for PEMFC cathodes', Journal of Power Sources, vol. 157, no. 1, pp. 56-63. https://doi.org/10.1016/j.jpowsour.2005.07.031

Studies on Co-based catalysts supported on modified carbon substrates for PEMFC cathodes. / Subramanian, Nalini P.; Kumaraguru, Swaminatha P.; Colon-Mercado, Hector; Kim, Hansung; Popov, Branko N.; Black, Timothy; Chen, Donna A.

In: Journal of Power Sources, Vol. 157, No. 1, 19.06.2006, p. 56-63.

Research output: Contribution to journalArticle

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AU - Kumaraguru, Swaminatha P.

AU - Colon-Mercado, Hector

AU - Kim, Hansung

AU - Popov, Branko N.

AU - Black, Timothy

AU - Chen, Donna A.

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