| http://www.w3.org/ns/prov#value | - As the cation-exchange resin, carbon particles and mixture of carbon particles and a cation-exchange resin to be used in the invention there may be used those described in detail with reference to the solid polymer electrolyte-catalyst composite electrode containing a cation-exchange resin, carbon particles and a catalyst metal, the catalyst metal being supported mainly on the site where the surfa
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