▎ 摘　　要

NOVELTY - The method involves growing a carbon nano tube array (20), which is perpendicular to a base of a current collector (100) on a base of the current collector. A graphene layer (30), which is perpendicular to the carbon nano tube array is grown, where the base of the current collector comprises the carbon nano tube array. A current collector substrate (10) is arranged perpendicular to the carbon nano-tube array. Chemical vapor deposition (CVD) process is performed based on solid phase pyrolysis technology and sputtering technology. The substrate is a carbon fiber substrate, a graphene substrate, a graphene intercalation compound substrate, a carbon nanotube substrate, metal substrate, and an alloy substrate. USE - Method for modifying a current collector of an energy storage device. ADVANTAGE - The method enables increasing contact point between the current collector and an electrode to reduce contact resistance between fluid and electrode and increase power density of an energy storage device. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a current collector. Current collector substrate (10) Carbon nano tube array (20) Graphene layer (30) Current collector (100)