Patent ID: 8216712

Claim:
A battery, comprising: an anode; a cathode; an electrolyte material disposed between the anode and the cathode; and a separator disposed between the anode and the cathode, the separator comprising a porous polymeric layer and a porous anodized metal oxide layer, the pores of the porous anodized metal oxide layer consisting essentially of substantially straight and parallel through-pores having a diameter of less than 100 nm and extending through the entire thickness of the porous anodized metal oxide layer, wherein the anodized metal oxide of the porous anodized metal oxide layer is selected from the group consisting of aluminum oxide, titanium oxide, zirconium oxide, niobium oxide, tungsten oxide, tantalum oxide, and hafnium oxide, a portion of the electrolyte is disposed within the through-pores, the electrolyte material comprises lithium, and the anode comprises a material selected from the group consisting of vanadium, carbon, silicon, aluminum, tin, and lithium titanate.