▎ 摘　　要

NOVELTY - Anode active material particle comprises internal pores, having a pore volume of Vp and pore wall surfaces, and a solid portion having a solid volume Va, where the volume ratio of Vp/Va is 0.1/1-10/1 and the pores have pore sizes of 2-10 microm, and are infiltrated with a graphene material that partially or fully covers the internal pore wall surfaces. USE - The particle is useful in a lithium battery, lithium metal secondary battery, lithium-sulfur battery, lithium-air battery or lithium-selenium battery (all claimed). ADVANTAGE - The particle: enables a lithium-ion battery to exhibit a high cycle life, high reversible capacity, low irreversible capacity, small particle sizes (for high-rate capacity), and compatibility with commonly used electrolytes; reduces battery capacity decay rate and dramatically increased charge/discharge cycle numbers; increases first-cycle efficiency and the Coulombic efficiencies of subsequent cycles; prevents direct contact between liquid electrolyte and the internal surfaces of the porous anode material particle; and prevents formation of solid-electrolyte interface layer on these internal surfaces. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) a mass of anode particles containing the anode particle; (2) a battery anode containing the particle or multiple particles; (3) a battery containing the battery anode; and (4) producing multiple particles. DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of depositing a graphene material on internal pore wall surfaces of a porous anode active material particle.