TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The composite material further contains high valence metal compound which is nitrate, sulfate, carbonate, phosphate or acetate of metal element (a) chosen from tungsten, zirconium, iridium, yttrium, manganese, ruthenium, cerium, vanadium, zinc, titanium and lanthanum, highest valence or middle valence cyclodextrin, crown ether, acetylacetonate, nitrogen-containing crown ether, nitrogen-containing heterocyclic ring, ethylenediaminetetraacetic acid, dimethylformamide, dimethylsulfoxide complex of the metal element (a), or highest valence or middle valence oxide of the metal element having perovskite structure chosen from cerium-tiania(CexTi(1-x)O2), cerium-lanthanum-titania (Ca0.6La0.27TiO3), lanthanum-cerium-manganese oxide (La(1-y)CeyMnO3) or lanthanum-cerium-calcium-manganese oxide (La0.7Ce0.15Ca0.15MnO3). The portion of acid exchange group in the ion exchange resin is bonded physically through the high valence metal compound.x=0.25-0.4;andy=0.1-0.4.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The ion exchange resin contained in the composite material is obtained by copolymerizing fluoro olefin and/or fluoro olefin-containing monomer. The dispersion solution of ion exchange resin which contains free radical initiator and high valence metal compound with porous fluorine containing polymer membrane is grafted with functional monomer through casting, tape casting and screen printing, spraying and soaking, and then thermal treatment of the wet film is performed at 30-300 degrees C, to obtain composite material. Preferred Composition: The bromo-containing functional monomer is of formula: CF2=CFRf4Br or Br(CF2)a(CFRf5)b(CFRf6)cO(C(-CF2X1)FCF2O)n-CF=CF2. The fluoroolefin is tetrafluoroethylene, chlorotrifluoroethylene, trifluoroethylene, hexafluoropropene and/or vinylidenes fluoride, preferably tetrafluoroethylene and/or chlorotrifluoroethylene. The fluoro-olefin-containing monomer contains functional group chosen from group of formula: Y1(CF2)a(CFRfl)b(CFRf2)cO(C(-CF2X)FCF2O)n-CF=CF2, Rf3CF=CF(CF2)dY2 or CF2=CFOCF2C(-CF2OCF3)FOCF2CF2Y3. The solvent used during manufacture of composite material is dimethyl formamide, dimethyl acetamide, methyl formamide, dimethyl sulfoxide, N-methylpyrrolidone, hexamethyl phosphoramide, propanone, water, ethanol, methanol, propanol, isopropanol, glycol and/or glycerol.d=0-5;Rf1-Rf3=perfluoroalkyl or fluorochloroparaffine;Y1-Y3=SO2M, COOR3 or PO(OR4)(OR5);M=F, Cl, OR, or NR1R2;R=methyl, ethyl, propyl, H, Na, Li, K or ammonium;R1,R2=H, methyl, ethyl or propyl;R3=H, Na, Li, K or ammonium, methyl, ethyl or propyl;R4,R5=H, Na, Li, K or ammonium;a,b,c,n=0 or 1;a+b+c=not 0;X1=F or Br;andRf4-Rf6=fluoro or perfluoroalkyl.    TECHNOLOGY FOCUS - POLYMERS - Preferred Properties: The number average molecular weight of the resin is 150000-450000. The membranes are uniaxial membrane or biaxial membrane. The thickness of the porous fluorine-containing polymer membrane is 5-20 mu m, porosity of 60-97% and pore diameter of 0.2-5 mu m. Preferred Composition: The porous fluorine-containing polymer membrane is made from polytetrafluoroethylene porous membrane, polytetrafluoroethylene-hexafluoropropene membrane, polyvinylidene fluoride porous membrane, chlorotrifluoroethylene porous membrane and/or polytetrafluoroethylene-ethylene porous membrane.