▎ 摘　　要

NOVELTY - Graphene water condensing device, comprises a substrate layer arranged as a rigid plate-shaped plane with high temperature resistance and high heat conductivity. A growth layer and a metal thin layer plated on the surface of the substrate layer for growing graphene. A graphene functional layer is used for growing single layer or few layers of graphene on the surface of the growth layer by vapor deposition. A metal functional layer is scattered and dispersed on the surface of the graphene functional layer as active site in the form of particles, and metal dendrites grow outward from the active sites. The material of the substrate layer is quartz glass. The material of the growth layer is copper, nickel, and copper-nickel alloy. The material of the metal functional layer is silver, nickel, zinc, copper and/or iron, preferably silver and copper. The metal dendrite is made of copper or silver. USE - The device is useful for water condensation and water purification. ADVANTAGE - The method grows the copper dendrite on the final sample by simple direct current electroplating technology, and liquefies and collects the water vapor in the air by using the characteristic of the graphene not hydrophile and condensation of the metal dendritic crystal tip. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: preparing graphene water condensing device; and use method of graphene water condensing device. DESCRIPTION OF DRAWING(S) - The drawing shows a graphene-based copper dendritic crystal tip effect water condensing device of the invention structure schematic diagram. Substrate layer (1) Nickel fast growth layer (2) Growing graphene functional layer (3) Metal functional layer (4) Copper dendritic crystal (5)