▎ 摘　　要

NOVELTY - An alkali metal battery comprises an anode, a cathode, an electrolyte, and an optional porous separator. The anode comprises graphene-carbon-metal hybrid foam comprising multiple pores, pore walls, and a lithium-attracting metal or sodium-attracting metal. The lithium-attracting metal is e.g. gold, potassium, iron, cobalt, nickel, tin, vanadium or chromium or its alloy for lithium metal battery. The pore walls comprise single-layer or few-layer graphene sheets. The few-layer graphene sheets have 2-10 layers of stacked graphene planes having an inter-plane spacing (d002) of 0.3354-0.40 nm. USE - Alkali metal battery e.g. lithium-metal or sodium-metal secondary battery is used as power source. Uses include but are not limited to electric vehicle, hybrid electric vehicle, laptop computers and mobile phones. ADVANTAGE - The alkali metal battery has improved specific energy, energy density, rate capability, long cycle life, and safety. The graphene material used in the battery is environmentally-friendly and economical. The graphene foam provides a safe and reliable site to receive and accommodate lithium/sodium during the battery charging step. The graphene sheets aids in reducing surface area, and improving exchange current density and resistance to lithium dendrite formation. The graphene sheets provides three-dimensional network of electron-conducting pathways without interruption, allowing for low resistance to electron transport. The hybrid foam is flexible which makes the pores initially large in size and chemically wettable and accessible to the electrolyte fluid. DETAILED DESCRIPTION - An alkali metal battery comprises an anode, a cathode, an electrolyte in ionic contact with the anode and the cathode, and an optional porous separator electronically separating the anode and the cathode. The anode comprises integral three-dimensional graphene-carbon-metal hybrid foam comprising multiple pores, pore walls, and a lithium-attracting metal or sodium-attracting metal residing in the pores or deposited on the pore walls. The lithium-attracting metal is chosen from gold, silver, magnesium, zinc, titanium, sodium, potassium, aluminum, iron, manganese, cobalt, nickel, tin, vanadium and chromium or its alloy for lithium metal battery. The sodium-attracting metal is chosen from gold, silver, magnesium, zinc, titanium, lithium, potassium, aluminum, iron, manganese, cobalt, nickel, tin, vanadium and chromium or its alloy for sodium metal battery. The content of lithium-attracting metal or sodium-attracting metal is 0.1-90 wt.% with respect to total weight of hybrid foam. The pore walls comprise single-layer or few-layer graphene sheets chemically bonded by a carbon material comprising a carbon material-to-graphene in a weight ratio of 1/200-1/2. The few-layer graphene sheets have 2-10 layers of stacked graphene planes having an inter-plane spacing (d002) of 0.3354-0.40 nm measured by X-ray diffraction. The single-layer or few-layer graphene sheets comprise a pristine graphene material comprising essentially 0 wt.% non-carbon elements, or a non-pristine graphene material comprising 0.001-25 wt.% non-carbon elements. The non-pristine graphene is chosen from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, doped graphene, and chemically functionalized graphene. INDEPENDENT CLAIMS are included for the following: (1) production of alkali metal battery electrode; and (2) production of continuous sheet, film, or filament of alkali metal battery. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart of production of integral three-dimensional graphene-carbon hybrid foam.