Enhanced Oxygen Reduction Reaction Performance of Size-controlled Pt Nanoparticles on Polypyrrole-functionalized Carbon Nanotubes

Papers published
Kentaro Ichihashi, Satoshi Muratsugu,* Shota Miyamoto, Kana Sakamoto, Nozomu Ishiguro, and Mizuki Tada*, Dalton Trans., in press. DOI: 10.1039/C9DT00158A
  • Size-controlled Pt nanoparticles were prepared on multi-wall carbon nanotubes (MWCNTs) decorated with polypyrrole matrix overlayers and exhibited superior oxygen reduction reaction (ORR) performance as electrocatalysts. The copolymerization of a new Pt4-pyrrole complex and pyrrole monomer in the presence of MWCNTs produced size-controlled Pt nanoparticles with diameters of 1.5 ± 0.5 nm. The present size-controlled Pt nanoparticles showed better durability than non-regulated Pt nanoparticles without polypyrrole and a commercial Pt/C catalyst during the ORR at the fuel cell cathode without substantial aggregation of the size-controlled Pt nanoparticles.

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