Effects of amphiphilic surfactants on electrolyte distribution in polymer electrolyte fuel-cell electrode

摘要

To enhance Pt utilization in the fuel-cell electrode by microscopically controlling the distribution of liquid electrolytes around Pt catalysts, the amphiphilic surfactant tergitol phosphate was synthesized and introduced into the fuel-cell electrode. The chemical structure of the surfactant was determined by ~1H-nuclear magnetic resonance, and its adsorption property on Pt-C catalyst was ascertained by Fourier transform infrared analysis. The electrode into which the amphiphilic surfactants were incorporated showed improved performance, and especially the amphiphilic surfactant with polyethylene oxide, NPE10-OPO(OH)_2, produced higher cell performance.