▎ 摘　　要

NOVELTY - Graphene-doped sodium alginate-based airgel silicon negative pole piece comprises pole piece including a three-dimensional network structure provided by sodium alginate airgel cross-linked by copper ions and graphene nanosheets uniformly dispersed in the three-dimensional network structure. The graphene nanosheets are used as the support of the three-dimensional network structure and constitute the conductive network of the pole piece. A copper elemental particles are used as the point conductive agent of the pole piece. The pole piece includes sodium alginate airgel cross-linked by copper ions to provide a three-dimensional network structure and graphene oxide nanosheets uniformly dispersed in the three-dimensional network structure. The materials of silicon nanometer powder and copper oxide powder are obtained through vacuum heat treatment and reduction. USE - Used as graphene -doped sodium alginate-based airgel silicon negative pole piece. ADVANTAGE - The doped graphene alginate-based aerogel silicon cathode sheet has uniform internal structure, simple technique, low reduction temperature, no current collector and high capacity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a preparation method of the doped graphene alginate-based aerogel silicon cathode aerosol.