Alkali metal or alkali-ion batteries with high volume and weight energy densities

摘要

An alkali metal-ion battery comprising: (a) an anode, wherein the anode is dispersed in a first liquid electrolyte disposed in pores of a 3D porous anode current collector having at least 80% by volume of pores The anode having an anode active material; (b) a cathode having a cathode active material dispersed in a second liquid electrolyte arranged in the pores of the 3D porous cathode current collector, the cathode having a cathode thickness-to-collector thickness ratio of 0.8 / 1 to 1 / 0.8; (c) a separator disposed between the anode and the cathode; The anode active material and the cathode active material are more than 40 wt% or more, and the 3D porous anode and / or the cathode current collector is more than 200 mu m (preferably, more than 10 wt% Greater than 500 microns, more preferably greater than 700 microns) and is in physical contact with the separation membrane.