Facile synthesis of Nafion-stabilized iridium nanoparticles and their direct use for fuel cells and water electrolyzers.

Using a quite small but suitable amount of Nafion as stabilizer, iridium colloids with well controlled particle size were synthesized and directly used for fuel cells or water electrolyzers without further removal or addition of Nafion, meanwhile, a strategy for fabrication of supported catalyst with high utilization was also proposed.