▎ 摘　　要

NOVELTY - The manufacturing method involves depositing one or more monolayers of graphene (210) onto a porous scaffold to form a graphene coating (212) on the porous scaffold. A first layer of electrochemically active material (214) is deposited onto the graphene coating. The porous scaffold is removed to expose the underside of the graphene coating. A second layer of electrochemically active material (216) is deposited onto the underside of the graphene coating to form a three-dimensional (3D) porous electrode (220). USE - Manufacturing method for making scaffold-free 3D porous electrode (claimed). ADVANTAGE - Obtains scaffold-free porous electrode that combines high volume fraction of active materials with good electrical conductivity and low mass of graphene to exhibit high capacity, good cycle stability and fast charge-discharge kinetics. Optimizes thickness of each active material layer to maximize volume of electrochemically active material for given scaffold geometry. Obtains mechanically-robust strucutre that prevents loss of active nanomaterials and collapse during long-term cycling. Improves anode electronic conductivity. DESCRIPTION OF DRAWING(S) - The drawing shows the perspective view of a 3D porous electrode during fabrication process. Monolayers of graphene (210) Graphene coating (212) First layer of electrochemically active material (214) Second layer of electrochemically active material (216) 3D porous electrode (220)