PARTICULATES OF GRAPHENE/CARBON-ENCAPSULATED ALKALI METAL, ELECTRODES, AND ALKALI METAL BATTERY

摘要

Provided is a porous graphene/carbon particulate comprising a graphene/carbon shell encapsulating a porous core, wherein the porous core comprises one or a plurality of pores and pore walls and a lithium-attracting metal or sodium-attracting metal residing in the pores or deposited on pore walls; wherein the lithium-attracting or sodium-attracting metal is selected from Au, Ag, Mg, Zn, Ti, Li, Na, K, Al, Fe, Mn, Co, Ni, Sn, V, Cr, or an alloy thereof and is in an amount of 0.1% to 90% of the total particulate weight, and the shell comprises multiple single-layer or few-layer graphene sheets chemically bonded by a carbon material having a carbon material-to-graphene weight ratio from 1/200 to 1/2. Also provided is a powder mass, anode, or battery that contains one or a plurality of such porous particulates.