Fuel cell electrocatalyst using polybenzimidazole-modified carbon nanotubes as support materials

Tsuyohiko Fujigaya, Naotoshi Nakashima

Research output: Contribution to journalArticle

121 Citations (Scopus)

Abstract

Toward the next generation fuel cell systems, the development of a novel electrocatalyst for the polymer electrolyte fuel cell (PEFC) is crucial to overcome the drawbacks of the present electrocatalyst. As a conductive supporting material for the catalyst, carbon nanotubes (CNTs) have emerged as a promising candidate, and many attempts have been carried out to introduce CNT, in place of carbon black. On the other hand, as a polymer electrolyte, polybenzimidazoles (PBIs) have been recognized as a powerful candidate due to the high proton conductivity above 100 °C under non-humid conditions. In 2008, we found that these two materials have a strong physical interaction and form a stable hybrid material, in which the PBIs uniformly wrap the surfaces of the CNTs. Furthermore, PBIs serve as effective binding sites for the formation of platinum (Pt) nanoparticles to fabricate a ternary composite (CNT/PBIs/Pt). In this review article, we summarize the fundamental properties of the CNT/PBIs/Pt and discuss their potential as a new electrocatalyst for the PEFC in comparison with the conventional ones. Furthermore, potential applications of CNT/PBIs including use of the materials for oxygen reduction catalysts and reinforcement of PBI films are summarized.

Original languageEnglish
Pages (from-to)1666-1681
Number of pages16
JournalAdvanced Materials
Volume25
Issue number12
DOIs
Publication statusPublished - Mar 25 2013

Fingerprint

Carbon Nanotubes
Electrocatalysts
Catalyst supports
Fuel cells
Carbon nanotubes
Platinum
Electrolytes
Polymers
Soot
Conductive materials
Catalysts
Proton conductivity
Hybrid materials
Binding sites
Carbon black
Reinforcement
Binding Sites
Oxygen
Nanoparticles
Composite materials

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Fuel cell electrocatalyst using polybenzimidazole-modified carbon nanotubes as support materials. / Fujigaya, Tsuyohiko; Nakashima, Naotoshi.

In: Advanced Materials, Vol. 25, No. 12, 25.03.2013, p. 1666-1681.

Research output: Contribution to journalArticle

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