▎ 摘　　要

NOVELTY - Cross-linked solid electrolyte, is claimed. The cross-linked solid electrolyte is obtained by cross-linking reaction materials including sulfhydryl-modified graphene oxide, thiol monomer A (I) and vinyl monomer B (II). USE - The cross-linked solid electrolyte is useful in battery (claimed). ADVANTAGE - The solid electrolyte: does not need the support material; has strong mechanical property, and self-repairing and reprocessing performance; can improve the micro-phase separation degree; reduces polymer crystallization performance; improves the conductivity of lithium ion; and improves the heat conducting performance. DETAILED DESCRIPTION - Cross-linked solid electrolyte, is claimed. The cross-linked solid electrolyte is obtained by cross-linking reaction materials including sulfhydryl-modified graphene oxide, thiol monomer A of formula (I) and vinyl monomer B of formula (II). R1, R2, R3, R4 = H, 1-5C alkyl or 1-5C alkylcarbonyl; x, y = 1, 2, 3 or 4; R5, R9 = H, 1-4C alkyl or 1-4C alkylcarbonyl; R6, R8 = H, 1-4C alkyl or 1-4C thioalkyl; R7 = H, 1-4C alkyl or 2-5C alkenyl; and m, n = 1, 2, 3, or 4. An INDEPENDENT CLAIM is also included for preparing cross-linked solid electrolyte, comprising adding sulfhydryl modified graphene oxide, monomer A, monomer B, initiator and electrolyte salt into organic solvent I to obtain mixed solution A, and polymerizing the mixed solution A into a film to obtain crosslinked solid electrolyte.