Cahn & Samuels, LLP
Method for producing an anion-exchange membrane for a solid polymer electrolyte type fuel cell
An anion-exchange membrane having quaternary ammonium groups or quaternary phosphonium groups wherein halogen ions serve as the counter ions is obtained. Rather than being subjected to ion exchange with an OH-type membrane using a toxic substance such as sodium hydroxide, the halogen-type anion exchange membrane is brought into contact with a carbonate solution and/or bicarbonate solution to directly obtain an anion exchange membrane where at least some of the counterions of the quaternary ammonium groups or quaternary phosphonium groups are CO32− and/or HCO3−.
Tokuyama Corporation
H Y H H H H C C Y
H01M Y02E H01M H01M H01M H01M C08J C08J Y02P
inventional additional inventional inventional inventional inventional inventional additional additional
Kenji Shin Hiroyuki
Fukuta Watanabe Yanagi