▎ 摘　　要

NOVELTY - A negative electrode consists of carbon layer as surface obtained by forming and growing graphene sheet which is formed on a substrate consisting of an iron-type metal, and formed in a diagonal direction with respect to surface of substrate. The carbon layer is used as surface of negative electrode. USE - Negative electrode is used for lithium ion secondary battery (claimed). Uses include but are not limited to tablet devices, mobile telephone, personal computer, motor vehicle, power system of smart grid, storage of wind power and solar cell. ADVANTAGE - The negative electrode provides compact and light weight lithium ion battery with excellent charge/discharge capacitance, and drives the battery using charge-discharge mechanism by formation and degradation of organic compound layer. The volume of the active material of the negative electrode is not affected by the charge-discharge capacitance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) lithium ion secondary battery, which is formed by directly-contacting carbon nano-chips layer of the negative electrode with electrolyte solution of battery and assembling; and (2) manufacture of negative electrode, which involves supplying mixed gas of hydrogen and methane to substrate at flow ratio (hydrogen/methane) of 1/2-2/1, substrate temperature of 650-850 degrees C and direct current bias voltage of -200 V to 0 V, growing graphene sheet for 15 minutes to 2 hours by plasma crystal vapor deposition method, and forming carbon nano-chips layer consisting of graphene sheet, and inclining and growing the carbon nano-chips layer in the irregular direction on the substrate.