▎ 摘　　要

NOVELTY - The electrode has graphene membranes (103, 104) forming a space with an insulating medium arranged along edges of two graphene films. An electrolyte salt includes a group of ionic liquids and a polymer electrolyte (107). A doped electrode (106) is arranged on the graphene films and the space without contacting with each other. The graphene films are covered on substrates (101, 102), where the graphene film is filled with the ionic liquid. A bias voltage is formed between 0 to 10V and between 0.5 to 5V. USE - Graphite alkene electrode for an electrochemical energy storage device (claimed). DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a graphene comprising an ionic liquid (2) a method for preparing a graphene electrode. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a graphite alkene electrode.'(Drawing includes non-English language text)' Substrates (101, 102) Graphene membranes (103, 104) Doped electrode (106) Polymer electrolyte (107)