High yield hydrogen peroxide production in a solid polymer electrolyte electrolyzer with a carbon fiber coated mesh substrate

We investigated high-yield hydrogen peroxide generation using a membrane electrode assembly (MEA) with a carbon fiber (CF)-coated mesh substrate in a solid polymer electrolyte electrolyzer. Current efficiency (52%) and power consumption (0.3 Wh g− 1) for this MEA were 1.5 times higher and 2 times lower at − 0.1 V vs. Ag/AgCl than those of reported values. These significant improvements were presumed to be attributed to enhanced oxygen mass transfer and reduced charge transfer resistance arising from the CF-coated mesh substrate in the MEA.

► The membrane electrode assembly (MEA) with the carbon fiber-coated mesh substrate for H2O2 production was prepared. ► Current efficiency of H2O2 production for the MEA in the solid polymer electrolyte electrolyzer was achieved at 52%. ► The power consumption for the MEA was achieved at 0.3 Wh g− 1. ► The enhanced oxygen mass transfer and reduced charge transfer resistance were responsible for the better performance.