Solid capacitor cathode carbon foil

The utility model discloses a solid capacitor cathode carbon foil comprising a corrosive aluminum foil layer which has rough upper and lower surfaces. The rough upper and lower surfaces of the corrosive aluminum foil layer are respectively plated through a magnetron sputtering way with upper and lower metal transition layers which have a high affinity for both aluminum and graphite. The outer surfaces of the upper and lower metal transition layers are respectively plated through a magnetron sputtering way with upper and lower graphite layers. The upper and lower metal transition layers and the upper and lower graphite layers are respectively provided with rough upper and lower transition layer surfaces and rough upper and lower graphite layer surfaces matched with the rough upper and lower surfaces of the corrosive aluminum foil layer. The graphite layers of the solid capacitor cathode carbon foil are not easy to fall off. The solid capacitor cathode carbon foil of the utility model has the characteristics of