TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Component: The electrochemical device further comprises a microporous separator, particularly polyolefin-based separator.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Component: The inorganic particles are inorganic particles having a dielectric constant of greater than or equal to5; or inorganic particles having lithium ion conductivity. The inorganic particles having a dielectric constant of greater than or equal to5 are barium titanate, lead (zirconate, titanate) (PZT), Pbl-xLaxZrl-yTiyO3 (PLZT), Pb(Mg3Nb2/3)O3-PbTiO3 (PMN-PT), hafnia (HfO2), strontium titanate (SrTiO3), tin oxide, cerium oxide, magnesium oxide, nickel oxide, calcium oxide, zinc oxide, zirconium oxide, yttrium oxide, aluminum oxide and/or titanium oxide. The inorganic particles having lithium ion conductivity are lithium phosphate (Li3PO4), lithium titanium phosphate (LixTiy(PO4)3 (x=0-2, y=0-3), lithium aluminum titanium phosphate (LixAly-Tiz(PO4)3 (x=0-2, y=0-l, z=0-3), (LiA1TiP)xOy type glass (x=0-4, y=0-13), lithium lanthanum titanate (LixLayTiO3 (x=0-2, y=0-3), lithium germanium thiophosphate (LixGeyPzSw (x=0-4, y=0-l, z=0-l, w=0-5), lithium nitrides (LixNy) (x=0-4, y=0-2), SiS2 type glass (LixSiySz) (x=0-3, y=0-2, z=0-4) and P2S5 type glass (LixPySz) (x=0-3, y=0-3, z=0-7). Preferred Parameter: The inorganic particles have a size of 0.001-10 microns. The organic/inorganic composite porous film has a pore size of 0.01-10 microns. The film has a porosity of 5-95%, and a thickness of 1-100 microns. Preferred Composition: The inorganic particles are present in the mixture of inorganic particles with the binder polymer at 50-99 wt.% based on 100 wt.% of the mixture.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Component: The inorganic particles are inorganic particles having a dielectric constant of greater than or equal to5; or inorganic particles having lithium ion conductivity. The inorganic particles having a dielectric constant of greater than or equal to5 are barium titanate, lead (zirconate, titanate) (PZT), Pbl-xLaxZrl-yTiyO3 (PLZT), Pb(Mg3Nb2/3)O3-PbTiO3 (PMN-PT), hafnia (HfO2), strontium titanate (SrTiO3), tin oxide, cerium oxide, magnesium oxide, nickel oxide, calcium oxide, zinc oxide, zirconium oxide, yttrium oxide, aluminum oxide and/or titanium oxide. The inorganic particles having lithium ion conductivity are lithium phosphate (Li3PO4), lithium titanium phosphate (LixTiy(PO4)3 (x=0-2, y=0-3), lithium aluminum titanium phosphate (LixAly-Tiz(PO4)3 (x=0-2, y=0-l, z=0-3), (LiA1TiP)xOy type glass (x=0-4, y=0-13), lithium lanthanum titanate (LixLayTiO3 (x=0-2, y=0-3), lithium germanium thiophosphate (LixGeyPzSw (x=0-4, y=0-l, z=0-l, w=0-5), lithium nitrides (LixNy) (x=0-4, y=0-2), SiS2 type glass (LixSiySz) (x=0-3, y=0-2, z=0-4) and P2S5 type glass (LixPySz) (x=0-3, y=0-3, z=0-7). Preferred Parameter: The inorganic particles have a size of 0.001-10 microns. The organic/inorganic composite porous film has a pore size of 0.01-10 microns. The film has a porosity of 5-95%, and a thickness of 1-100 microns. Preferred Composition: The inorganic particles are present in the mixture of inorganic particles with the binder polymer at 50-99 wt.% based on 100 wt.% of the mixture.    TECHNOLOGY FOCUS - POLYMERS - Preferred Parameter: The binder polymer has a glass transition temperature (Tg) of -200 to 200degreesC, and a solubility parameter of 15-45 MPa1/2. The porous substrate having pores shows a m.pt. of greater than or equal to200degreesC. The porous substrate has a pore size of 0.01-50 microns. Preferred Material: The binder polymer is polyvinylidene fluoride-co-hexafluoropropylene, polyvinylidene fluoride-co-trichloroethylene, polymethylmethacrylate, polyacrylonitrile, polyvinylpyrrolidone, polyvinyl acetate, polyethylene-co-vinyl acetate, polyethylene oxide, cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate, cyanoethylpullulan, cyanoethyl polyvinylalcohol, cyanoethylcellulose, cyanoethylsucrose, pullulan, carboxymethyl cellulose, acrylonitrile-styrene-butadiene copolymer or polyimide. The porous substrate is polyethylene terephthalate, polybutylene terephthalate, polyester, polyacetal, polyamide, polycarbonate, polyimide, polyetherether ketone, polyether sulfone, polyphenylene oxide, polyphenylene sulfide and/or polyethylene naphthalene.