Abstract: A method of making a porous film includes disposing a slurry on a substrate, solidifying the slurry to yield a film on the substrate, and subliming the organic sublimable material to yield the porous film on the substrate. The slurry includes an electrochemically active material, an electrically conductive material, and a binder dispersed in an organic sublimable material. The electrochemically active material and the electrically conductive material are different. A slurry includes a solid component including an electrochemically active material, an electrically conductive material, and a binder; and a liquid component including an organic sublimable material, wherein the electrochemically active material and the electrically conductive material are different, and the solid component is dispersed in the liquid component.