▎ 摘　　要

NOVELTY - An energy storage device (600B) comprises an electrode (610B) comprising 0.1-5 %mass graphene sheet, a layered double hydroxide coupled to the graphene sheet, a binder, a conductive additive, and a current collector (C1), an electrode (420) comprising a hydroxide and a current collector (C2), a separator, and an electrolyte (430). USE - Energy storage device such as lithium-ion batteries used in electronics. Uses include but are not limited to power tools, smart phones, grid stabilization devices, electric vehicles, and laptops. ADVANTAGE - The energy storage devices is light in weight and structurally flexible, and has high power density of 3.5-5 kW/kg, energy density of 250-425 Wh/kg, durability, and charge/discharge characteristics. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an electrode, which comprises 0.1-5 %mass graphene sheet, a layered double hydroxide coupled to the graphene sheet, a binder, a conductive additive, and a current collector. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view illustrating components and chemical reactions in energy storage device. Redox active material (411) Electrodes (420, 610B) Electrolyte (430) Capacitive material (512) Energy storage device (600B)