TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The inorganic particles have average particle diameter of 0.001-10 mu m and permittivity constant of more than 5 and improved lithium ion transfer capability. The permittivity constant inorganic particles are of (Pb(Zrx, Ti1-x)O3) formula (I), (Pb1-xLaxZr1-yTiyO3) formula (II), ((1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3) formula (III), and are barium titanate, hafnium oxide, strontium titanate, tin oxide, cesium oxide, magnesium oxide, nickel oxide, calcium oxide, zinc oxide, zirconium dioxide, yttrium trioxide, alumina, silicon carbide and titanium dioxide. The lithium ion transfer capacity inorganic particles are lithium phosphate, lithium titanium phosphate compound of formula (Lix1Tiy1(PO4)3) (IV), lithium aluminum titanium phosphate compound of formula (Lix2Aly2Tiz (PO4)3) (V), lithium aluminum titanium phosphate glass series compound of formula ((LiAlTiP)x3Oy3) (VI), lithium lanthanum titanate compound of formula (Lix4Lay4TiO3) (VII), lithium germanium phosphate series compound of formula ((Lix5Gey5Pz1Sw)) (VIII), lithium nitride of formula (Lix6Ny6) (IX), silicon selenide compound of formula (SiS2(Lix7Siy7Sz2)) (X), and phosphorus sulfur glass series compound of formula (P2S5(Lix8Py8Sz3)) (XI).x, y = 0-1;x1 = 0-2;y1 = 0-3;x2 = 0-2;y2 = 0-1;z = 0-3;x3 = 0-4;y3 = 0-13;x4 = 0-2;y4 = 0-3;x5 = 0-4;y5 = 0-1;z1 = 0-1;w = 0-5;x6 = 0-4;y6 = 0-2;x7 = 0-3;y7 = 0-2;z2 = 0-4;x8 = 0-3;y8 = 0-3; andz3 = 0-7.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The binder polymer includes polyvinylidene fluoride-co-hexafluoro propylene, polyvinylidene fluoride-co-trichloroethylene, polymethyl methacrylate, polyacrylonitrile, polyvinylpyrrolidone, polyvinylacetate, polyethylene-co-vinyl acetate, polyethylene oxide, cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate, cyanoethylpullulan, cyanoethyl polyvinylalcohol, cyanoethylcellulose, cyanoethyl sucrose, pullulan, carboxyl methyl cellulose, acrylonitrile-styrene-butadiene copolymer and polyimides. The separator contains 1-15 pts. wt. of binder polymer and 1-15 pts. wt. of poly dopamine. The thickness of the porous coating layer is 0.01-50 mu m. The porous base material includes polyolefin, polyethylene terephthalate, polybutylene terephthalate, polyester, polyacetal, polyamide, polycarbonate, polyimide, polyetheretherketone, polyethersulfone, polyphenylene oxide, polyphenylenesulfide and polyethylenenaphthalene. EXAMPLE - No suitable example given.