Alkali metal-sulfur battery with high volume and weight energy density

摘要

Conductivity acting as a 3D cathode current collector having (a) an anode, (b) a cathode active material slurry comprising (i) a cathode active material dispersed in an electrolyte, and (ii) at least 70% by volume pores. A cathode having a porous structure, wherein the cathode active material slurry is disposed in pores of the conductive porous structure, and the cathode active material is sulfur, lithium polysulfide, sodium polysulfide, sulfur An alkali metal comprising a cathode selected from a polymer composite, a sulfur-carbon composite, a sulfur-graphene composite, or combinations thereof, and (c) a separator disposed between the anode and the cathode In a sulfur battery, the ratio of cathode thickness to cathode current collector thickness is 0.8 / 1 to 1 / 0.8, and / or the cathode active Material, forms an electrode active material loading of 15 mg / cm ^2, greater than the 3D porous cathode current collector, or 200 [mu] m (preferably, 500 [mu] m greater) having a thickness of, alkali metal - sulfur battery. [Selection] Figure 1 (A)