Abstract: A battery electrode comprising a porous polymeric material having at least a coating of an active material applied thereto. The battery electrode may be a 3-dimensional electrode.

Abstract: An electrode material for a battery or for a capacitor, supercapacitor or a pseudo capacitor comprises a porous substrate coated with a coating comprising a conducting material and an active material, wherein the thickness of the coating is less than 1 micrometre and the volume fraction of active material is greater than 5%. In another aspect, the electrode material comprises a metallic network structure and an active material connected to the metallic structure, wherein the calculated volume fraction of active material is greater than 5%, and the surface area of the material is greater than 5 m2/g.

Abstract: A battery electrode comprising a porous polymeric material having at least a coating of an active material applied thereto. The battery electrode may be a 3-dimensional electrode.

Abstract: A porous membrane material comprising a porous membrane substrate coated with a thin, uniform coating of a different material. The membrane material can have high electrical conductivity. The membrane material can exhibit a very high ratio of electrical conductivity to thermal conductivity. The porous membrane substrate may be removed to form the membrane.