TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compound: Alternately, reaction product is obtained by carrying out hydrolysis and dehydrate-condensation of composition containing silicon compounds (a,b and c) or composition containing silicon compounds (a-c) and alkoxide of aluminum, titanium or zirconium, preferably titanium. The silicon compound (c) is of formula: Si(OR40)e"(R41)f", and excludes compounds (a,b).e"=2-4;f"=0-2;e"+f"=4;andR40,R41=R30, preferably methyl, ethyl, propyl, iso-propyl, n-propyl, butyl, iso-butyl, hexyl, octyl, decyl, dodecyl, cyclopentyl, cyclohexyl, phenyl or trifluoropropyl.    TECHNOLOGY FOCUS - POLYMERS - Preferred Polymer: The proton-conductive polymer has sulfonic acid group, carboxylic acid group, phosphoric acid group and/or phenolic hydroxyl group, and is chosen from perfluorocarbon group polymer having sulfonic acid group and carboxyl group, perfluoro sulfonic acid group polymer, polyether ketone, polyether ether ketone, polysulfide, polyphosphazene, polyarylene, polyphenylene, polybenzimidazole, polyether sulfone, polyether ether sulfone, polyphenylene oxide, polyimide, polysulfone, poly sulfonate, polybenzimidazole, polybenzoxazole, polybenzothiazole, polythiazole, polyphenyl quinoxaline, polyquinoline, polysiloxane or polytriazine. The proton-conductive polymer is polyarylene copolymer containing structural units of formulae (1,2).Y'=-CO-, -SO2-, -SO-, -CONH-, -COO-, -(CF2)l- or -C(CF3)2-;l=1-10;Z=single bond, -(CH2)l-, -C(CH3)2-, -O- or -S-;Ar=-SO3H, -O(CH2)pSO3H or -O(CF2)pSO3H;p=1-12;m,n=0-10;k=1-4;A,D=single bond, -CO-, -SO2-, -SO-, -CONH-, -COO-, -(CF2)l-, -(CH2)l-, -CR'2-, cyclohexylidene, fluorenylidene, -O- or -S-;R'=aliphatic hydrocarbyl, aromatic hydrocarbyl or halogenated hydrocarbyl;B'=oxygen atom or sulfur atom;R1-R16=H, fluoro, alkyl halide, in which portion(s) of alkyl is halogenated, allyl, aryl, nitro or nitrile;s,t=0-4;andr=0 or 1 or more.Preferred Property: The polyelectrolyte has ion exchange capacity of 0.1-5 meq/g. Preferred Definitions:    R22=pyrrole, thiazole, benzothiazole, isothiazole, oxazole, benzoxazole, isoxazole, imidazole, imidazoline, imidazolidine, benzimidazole, pyrazole, triazine, pyridine, pyrimidine, pyridazine, pyrazine, indole, quinoline, isoquinoline, tetrazole, tetrazine, triazole, carbazole, acridine, quinoxaline, quinazoline, indolizine, isoindole, 3H-indole, 2H-pyrrole, 1H-indazole, purine, phthalazine, naphthyridine, cinnoline, pteridine, carboline, phenanthridine, perimidine, phenanthroline, phenazine, phenarsazine, phenothiazine, furazan, phenoxazine, pyrrolidine, pyrroline, pyrazoline, pyrazolidine, piperidine, piperazine, indoline, isoindoline, quinuclidine, primary amino, secondary amino or tertiary amino, preferably imidazole, imidazoline, pyridine, pyrrole, benzimidazole, benzoxazole, triazine, triazole, primary amine, secondary amine or tertiary amine.