Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 114, Issue 15, Pages 6976-6982Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp100397h
Keywords
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Funding
- National Nanoscience and Nanotechnology Program [96-2120-M-006-006]
- [95-2221-E-006-227-MY3]
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A coral-like carbon material (Coral-C) is synthesized by growing curled carbon nanotubes (CNTs) onto carbon black (Lamp Black) to incorporate the unique structures and properties of the two nanostructured carbons, CNTs and carbon spheres. This Coral-C, having a good electronic conductivity, is used as a supporting material for Pt nanocatalyst for application in fuel cell electrodes. The Pt nanoparticles, being synthesized by a ligand exchange method, are stabilized on Coral-C though an enhanced deposition process with poly(oxyproplyene)diamines. The Coral-C supported Pt catalyst shows excellent electrochemical active area (102.5 m(2) g(-1) Pt), good catalytic activity toward methanol oxidation (1.5 times higher than E-TEK Pt/C), and good power output in single DMFC (1.3 times better than E-TEK Pt/C), which could be attributed to the unique nanostructure of the catalyst: high conductivity of the surface accessible support and highly distributed Pt nanoparticles. The successful advancement in this coral-like nanostructure design for fuel cell catalyst presents a significant achievement in both the scientific and engineering fields.
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