TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The method further involves adding a surfactant to the inorganic material before reacting with the alkoxysilane. At least one of sulfuric acid, phosphoric acid or acetic acid is used in the protonation. In (A2), the conductive polymer is intercalated between layers of a hydrogen ionic conductive inorganic material or products exfoliated from each layer of a hydrogen ionic conductive inorganic material are dispersed in the conductive polymer, or above structures are coexistent. The formation of the membrane is carried out by locating the reaction product of mixture of (A1) and conductive polymer in a frame for polymer membrane and maintaining it in an oven at 40-150degreesC.Preferred Components: The moiety is selected from at least one sulfonic acid containing moiety, carboxylic acid containing moiety or phosphoric acid (H3PO4) containing moiety. The sulfonic acid containing moiety is a silicate connected to the inorganic material through an ether bond and has a free thiol group at a terminal. The sulfonic acid containing moiety is obtained by the hydrolysis of an alkoxysilane, which contains a hydrolysable alkoxy group and a thiol group, dehydration and polycondensation of the hydrolyzed product. The alkoxysilane is selected from at least one of 3-mercaptopropyl trimethoxysilane or 3-mercaptopropyl methyl dimethoxysilane. The surfactant is selected from at least one dodecylamine, cetyltrimethylammonium bromide, dodecyltrimethylammonium bromide or tetrabutylammonium hydroxide.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The inorganic material is selected from at least one montmorillonite, hydrated sodium calcium aluminum magnesium silicate hydroxide, pyrophyllite, talc, vermiculite, sauconite, saponite, nontronite, amesite, baileychlore, chamosite, clinochlore, cookeite, corundophilite, daphnite, delessite, gonyerite, nimite, odinite, orthochamosite, penninite, pannantite, rhipidolite, prochlore, sudoite, thuringite, kaolinite, dickite or nacrite. The nano-sized interlayer distance of inorganic material is 0.1 - 10 nm. The interlayer distance of (A1) is 0.1 - 50 nm. The oxidizing agent is hydrogen peroxide, potassium oxide or barium oxide.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The conductive polymer (3 - 20 parts/wt.%) is selected from at least one perfluorinated sulfonic acid polymer, sulfonated polyimide, sulfonated polyetherketone, sulfonated polystyrene or sulfonated polysulfone. EXAMPLE - Toluene (150 ml) was added to montmorillonite (49 mmol), stirred and to the mixture, cetyltrimethylammonium bromide (24.5 mmol) was added. 3-mercapto propyl trimethoxysilane (4.63 g) was added to the mixture and mixed at room temperature for 1 hour. The temperature was raised to 100degreesC and mixed for 24 hours, followed by cooled and dried in an oven controlled at 60degreesC. The dried product was added hydrogen peroxide (8.33 g) and mixed at room temperature for 6 hours. After raising the temperature to 70degreesC, the reaction was carried out for 1 hour. The dried product was poured in aqueous solution of sulfuric acid (10 wt.%) and stirred at room temperature for 30 minutes, followed by work-up, hydrogen ionic conductive inorganic material (A1) was obtained. (A1)(0.03 g) was mixed with copolymer solution of tetrafluoroethylene and perfluoro-3,6-dioxa-4-methyl-7-octenesulfonyl fluoride (20 g, 5 wt.%) and the mixture was stirred and the resulting product was transferred to a frame for polymer membrane and heat-treated in an oven controlled at 130degreesC for 4 hours, to form a polymer nanocomposite membrane (A2). (A2) was used to prepare a membrane and electrode assembly (MEA). The resulting MEA was used to prepare a direct methanol fuel cell. The fuel cell exhibits improved energy density and fuel efficiency than prior art fuel cell.