TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Compound: The inorganic dopant is oxide, orthophosphate, condensed phosphate, polyacid, polyacid salt, hydrate, silicate, sulfate, selenite and/or arsenide, preferably oxide, orthophosphate, condensed phosphate, polyacid or polyacid salt, more preferably oxide, orthophosphate or condensed phosphate, most preferably silica, zirconium oxide, titania, boron phosphate, zirconium phosphate (Zr3(PO4)4 or Zr(HPO4)2), zirconium hydrogen phosphate, titanium (II) monohydrogen phosphate or complex oxide of zirconium hydrogen phosphate (Zr2H(P3O10)2). Preferred Property: The granular size of organic dopant is 0.005-50 microns.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compound: The solvent for casting, spin coating, curtain coating, screen printing, spray coating and dipping processes is dimethyl formamide, dimethyl acetamide, dimethyl sulfoxide, N-methyl pyrrolidone, hexamethyl phosphoramide, acetone, water, ethanol, methanol, propanol, isopropanol, glycol or glycerol.    TECHNOLOGY FOCUS - POLYMERS - Preferred Properties: The mass ratio of organic dopant and fluorine-containing ion-exchange resin is 0.5-50:100, preferably 1-25:100. The microporous membrane has aperture of 0.1-1 micron, thickness of 5-100 microns, and porosity of 30-99%, preferably 70-97%. The solid content in the prepared resin solution is 1-80 wt.%. Preferred Compound: The fluorine-containing olefin in fluorine-containing ion-exchange resin is tetrafluoroethylene or trifluorochloroethylene. Preferred Membrane: The microporous membrane is organic microporous membrane or inorganic microporous membrane, or polymer membrane, ultrathin ceramic membrane or ultrathin molecular sieve membrane, preferably fluorocarbon polymer membrane, ultrathin silica membrane, titania membrane, zirconium oxide membrane or porous glass membrane. Preferred Process: The fluorine-containing ion-exchange resin in membrane is crosslinked on the surface of microporous membrane or crosslinked in space of the microporous membrane. The solution is heat-treated at 30-300 degrees C for 10-100 minutes, during membrane formation.