▎ 摘　　要

NOVELTY - Preparing graphene paper comprises e.g. (i) preparing macromolecule polymer spinning precursor, adding spinning precursor in liquid storage of static spinning device, preparing polymer nano fiber film substrate using electrostatic spinning method and collecting on collecting plate and (ii) placing graphene oxide dispersion in liquid storage of electrostatic spraying device, placing nano fiber film substrate in collecting mechanism of an electrostatic spraying device, and directly spraying composite graphene oxide film on the nano fiber film substrate by electrostatic spraying method. USE - The method is useful for preparing graphene paper (claimed). ADVANTAGE - The method: is simple, economical; easily separates graphene paper from the substrate material; realizes directly patterning of graphene paper; and expands the application field of the material. The graphene paper: has uniform thickness, good electrochemical performance, and large area. DETAILED DESCRIPTION - Preparing graphene paper comprises (i) preparing macromolecule polymer spinning precursor, adding spinning precursor in liquid storage of static spinning device, preparing polymer nano fiber film substrate using electrostatic spinning method and collecting on collecting plate, (ii) placing graphene oxide dispersion in liquid storage of electrostatic spraying device, placing nano fiber film substrate in collecting mechanism of an electrostatic spraying device, and directly spraying composite graphene oxide film on the nano fiber film substrate by electrostatic spraying method, (iii) removing composite film material of nano fiber film substrate to obtain the graphene oxide film, and (iv) reducing the oxidized graphene oxide film to obtain graphene paper.