Sulfonated polymers are promising polyelectrolyte for polymer electrolyte fuel cells (PEFCs) in the next generation. We found that the sulfonated polyelectrolyte can wrap multi-walled carbon nanotubes (MWNTs). After the reduction of Pt salt in the presence of the polyelectrolyte-wrapped MWNTs, Pt-nanoparticles below 5 nm in diameter with a narrow distribution were found to be homogeneously loaded. The composites are composed from the electron conductor, proton conductor and the catalyst metal, which are all necessary for the electrocatalyst for fuel cell and are promising materials for PEFC in the next generation.
- Tsuyohiko Fujigaya
- ChaeRin Kim
- Naotoshi Nakashima
