TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The catalysts are transition metals or their compounds, preferably platinum-ruthenium or platinum. The catalyst is further bonded to a catalyst carrier, and the carrier is bonded to proton-exchanged ionic polymers. The catalyst carrier contains carbon, titanium, gold, silver or copper. The weight ratio of catalysts to coupling agents is 10-1000, preferably 10-200. The weight ratio of catalysts to proton-exchanged ionic polymers is 0.1-100, preferably 1-20. Preferred Method: The bonding method is a covalent bonding or a non-covalent bonding. Preferred Process: The method further involves adding an oxidizing agent to oxidize surface of catalysts.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The functional group (B1) is silyl group, silane group, carbonate group, phosphate group or borate group. The functional group (B2) is epoxy group or amino group. The coupling agent is 3-glycidoxypropyl trimethoxysilane (GPTMS) or 3-aminopropyl trimethoxysilane (APTMS). The composition further comprises a solvent. The solvent is n-butyl acetate, ethylene glycol or glycerol.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The proton-exchanged ionic polymer is a perfluoro polymer, preferably perfluorosulfonate ionomer (PSFI) or Nafion (RTM: sulfonated tetrafluorethylene copolymer). EXAMPLE - Platinum and 3-glycidoxypropyl trimethoxysilane (GPTMS) as coupling agent, were dispersed in n-butyl acrylate (n-BA), to form platinum/n-BA and GPTMS/n-BA. Then, mixture of platinum/n-BA and GPTMS/n-BA, such that ratio of platinum and GPTMS was 100:2, was maintained in 80degreesC water bath for 3 minutes, and ultrasonicated. Perfluorosulfonate ionomer (PSFI) solution of Nafion (RTM: sulfonated tetrafluorethylene copolymer) and ethylene glycol were mixed and heated to remove water and alcohol. Unreacted GPTMS was remained in the upper layer solution. The excess GPTMS was separated, and ultrasonicated, to obtain a platinum-GPTMS-Nafion (RTM: sulfonated tetrafluorethylene copolymer)/ethylene glycol. An electrode was fabricated using the obtained product. A membrane-electrode assembly was formed using the fabricated electrode.