| abstract |
A lithium or sodium metal battery is provided having an anode, a cathode, and a porous separator and/or electrolyte, wherein the anode contains an integral body of pores, pore walls, and a lithium-attracting metal located in the pores Formula 3D graphene-carbon hybrid foam; wherein the metal is selected from Au, Ag, Mg, Zn, Ti, Na, K, Al, Fe, Mn, Co, Ni, Sn, V, Cr, or alloys thereof, and its The amount is from 0.1% to 50% by weight or volume of the total hybrid foam and these cell walls contain monolayer or few-layer graphene sheets chemically bonded by carbon material, with from 1/200 to 1/2 carbon material to graphene Weight ratio, wherein, the graphene sheet contains native graphene or non-native graphene, and this non-native graphene is selected from graphene oxide, reduced graphene oxide, fluorinated graphene, chlorinated graphene, brominated graphene, iodine graphene, hydrogenated graphene, graphene nitride, doped graphene, chemically functionalized graphene, or a combination thereof. |