▎ 摘　　要

NOVELTY - The utility model claims a graphite solar battery, comprising a positive electrode substrate, nitrogen-doped graphene positive electrode, spinel coating, nitrogen-doped graphene negative electrode, negative electrode substrate. the positive electrode substrate and the negative electrode substrate is mainly formed of polyethylene terephathalate PET substrate layer, nitrogen-doped graphene positive electrode attached on the said positive electrode substrate, nitrogen-doped graphene negative electrode attached on the said negative electrode base plate; this utility model of battery used in nitrogen-doped graphene changes the electronic structure of the traditional graphene. the free carrier density of the graphene so as to improve the performance and stability of the graphene, it can keep with high reversible capacity, at the same time adopting spinel coating as a protective layer, improve the oxidation resistance of the coating at the same time, also has good inhibiting volatilization ability of Cr.