LOW RESISTANCE SEPARATOR DESIGN IN BATTERY CELLS

A battery component is described that has at least one ceramic layer that includes ceramic particles and a binder. The ceramic particles may include α-alumina or γ-alumina. The ceramic layer may be characterized by a porosity of greater than or about 40 vol %. In additional embodiments, the one or more ceramic layers may have a weight ratio of ceramic particles to binder is greater than or about 90:10. The battery component may be a battery separator that is characterized by a MacMullin number of less than or about 40 and a thermal shrinkage of less than or about 1 vol. % after 1 hour at 140° C.