▎ 摘　　要

NOVELTY - Modified zinc sheet comprising three-dimensional graphene oxide layer that is coated on the metal zinc sheet surface, where three-dimensional graphene oxide layer is obtained by three-dimensional graphene oxide in-situ reaction deposition. USE - The modified zinc sheet is used as a metal zinc cathode for an aqueous zinc ion battery (claimed). ADVANTAGE - The sheet inhibits growth of zinc dendrites and improves service life of battery; The required equipment is very common, the preparation process is simple, Green and environmentally friendly, easy to promote, is assembled into a zinc zinc symmetric battery, The cycle stability test shows that it can cycle stably for greater than or equal to 120 hours at a current density of 1mA.cm2. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing modified zinc flakes comprising placing metal zinc flakes in three-dimensional graphene oxide solution to soak, taking out zinc flakes, and vacuum-drying (2) battery obtained by assembling the metal zinc cathode of the aqueous zinc ion battery