Membranes for direct methanol fuel cell based on modified heteropolyacids

作者: M.L Ponce , L.A.S de A. Prado , V Silva , S.P Nunes

DOI: 10.1016/S0011-9164(04)00072-4

关键词: OxidePolyether ether ketoneInorganic chemistryChemistryMembraneDispersion (chemistry)Covalent bondDirect methanol fuel cellSilanesFumed silicaMechanical engineeringGeneral Materials ScienceGeneral chemistryGeneral Chemical EngineeringWater Science and Technology

摘要: Abstract Organic-inorganic membranes for direct methanol fuel cell (DMFC) application were prepared from sulfonated polyether ether ketone (SPEEK), containing heteropolyacids and an oxide phase either generated by hydrolysis ofamino-modified silanes or dispersion of a surface-modified fumed silica. The heteropolyacid was based on lacunary divacant [γ-SiW10O36]−8 contained epoxy groups which reacted with the ammo-groups in phase. reaction provides covalent bond between to insoluble phase, resulting its fixation membrane. organic-inorganic composites this way more stable than plain membrane, had lower crossover proton-conductivity same order magnitude.

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