▎ 摘　　要

NOVELTY - Preparing graphene film involves adding graphite oxide with deionized water by ultrasonic dispersion to formed dispersion liquid and then ferric chloride is added to form oxidized graphene hydrogel, after film is formed then mixture is immersed in mixture of hydroiodic acid and acetic acid at 75 degrees C to freezed and dried to obtained graphene film, where oxidized graphite concentration in dispersion is 5-10 milligram/milliliter and mass ratio of ferric chloride to oxidized graphite is 0.01-0.1:1. USE - Method for preparing graphene film used for full solid energy-changing device (claimed). ADVANTAGE - The method enables to prepare graphene film has high toughness, better hole distribution condition, good electrochemical performance, which beared 100 gram of tension, solid energy changing component not only has energy storage effect of energy storage device and electrochromic device with color-changing function at 0.00005 Amphere current density and area specific capacity is 13.3 magnetic field/centimeter. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a device for preparing full solid energy-changing device, which comprises: (A) first substrate and second substrate; (B) first base plate; (C) providing second base plate from top to bottom with electrolyte layer and electrochromic electrode layer; (D) electrochromic electrode layer comprises electrochromic electrode working area and light shielding area; (E) shading region is second graphene film; (F) arranging around electrochromic electrode working area are electrochromism layer; (G) fixing first substrate and electrolyte layer between first graphene film with hollow window is opened; and (H) hollow window position and electrochromic electrode working area.