An overview on electrochemical and spectroscopic investigation of nano-dispersed fuel cell catalyst activity and durability

Research output: Contribution to journalArticle

Abstract

Under potential cycling, fuel cell catalysts undergo dramatic losses in activity as a result of corrosion and catalyst surface change and dissolution. As transmission electron microscopy indicates, in the early potential cycles, two mechanisms are likely involved; namely, Pt particles growth and Pt dissolution. We reported that catalyst support plays a key role in enhancing catalyst activity and durability. Support based on boron doped diamond (DD) has an excellent corrosion resistance in an acidic environment and at high potential. Hence, BDD could be a good alternative to carbon. Also, ceramic materials, such as metal oxides, are promising candidates as catalyst supports. These materials can improve the oxygen reduction reaction (ORR) activity and durability due to possible interaction between catalyst and support. We have shown, as an example, the effect of support on ORR activity for two systems, Pd/C and Pd/TiO2.

Original languageEnglish
Pages (from-to)117-124
Number of pages8
JournalArabian Journal for Science and Engineering
Volume35
Issue number1 C
Publication statusPublished - Jun 2010
Externally publishedYes

Fingerprint

Catalyst supports
Fuel cells
Catalyst activity
Durability
Catalysts
Dissolution
Oxygen
Diamond
Boron
Ceramic materials
Oxides
Corrosion resistance
Carbon
Metals
Corrosion
Transmission electron microscopy

Keywords

  • Catalyst support
  • Fuel cell catalyst
  • Oxygen reduction activity
  • Potential cycling

ASJC Scopus subject areas

  • General

Cite this

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abstract = "Under potential cycling, fuel cell catalysts undergo dramatic losses in activity as a result of corrosion and catalyst surface change and dissolution. As transmission electron microscopy indicates, in the early potential cycles, two mechanisms are likely involved; namely, Pt particles growth and Pt dissolution. We reported that catalyst support plays a key role in enhancing catalyst activity and durability. Support based on boron doped diamond (DD) has an excellent corrosion resistance in an acidic environment and at high potential. Hence, BDD could be a good alternative to carbon. Also, ceramic materials, such as metal oxides, are promising candidates as catalyst supports. These materials can improve the oxygen reduction reaction (ORR) activity and durability due to possible interaction between catalyst and support. We have shown, as an example, the effect of support on ORR activity for two systems, Pd/C and Pd/TiO2.",
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AB - Under potential cycling, fuel cell catalysts undergo dramatic losses in activity as a result of corrosion and catalyst surface change and dissolution. As transmission electron microscopy indicates, in the early potential cycles, two mechanisms are likely involved; namely, Pt particles growth and Pt dissolution. We reported that catalyst support plays a key role in enhancing catalyst activity and durability. Support based on boron doped diamond (DD) has an excellent corrosion resistance in an acidic environment and at high potential. Hence, BDD could be a good alternative to carbon. Also, ceramic materials, such as metal oxides, are promising candidates as catalyst supports. These materials can improve the oxygen reduction reaction (ORR) activity and durability due to possible interaction between catalyst and support. We have shown, as an example, the effect of support on ORR activity for two systems, Pd/C and Pd/TiO2.

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