国家/地区 中国（4）
IPC部 C（4）
IPC大类 C01（4）
IPC小类 C01B（4）
IPC C01B032/19（4）
发明人 WANG J（4）
公开年 2019（4）
申请年 2019（4） 
专利权人 SICHUAN OUXU.（3）

Graphene having polynitrogen coordination structure useful for electrocatalytic reaction of carbon dioxide, oxygen and formaldehyde comprises tomic layers of carbon, oxygen, nitrogen, hydrogen and other elements and catalytic active site.

WANG J, ZHANG T, ZHANG H

Preparation of graphene composite material involves distilling graphene aqueous solution in distillation dish to obtain graphene sheet, and grinding to obtain pulverized particles and reacting graphene in high-temperature PVT growth furnace.

WANG Q, WANG P, WANG J, ZHANG W, YU Z, WANG H

Preparation of graphene by adding graphene expanded product in alcohol solution, mixing, cooling, standing, discharging excess alcohol solution through filter, introducing clear water to solid precipitates, washing with water, and drying.

WANG Q, WANG P, WANG J, ZHANG W, YU Z, WANG H

Preparing graphene comprises redoxing graphite including e.g. placing preferred graphite and grinding to obtain graphite particles in pulverizer, and grinding graphene particles into grinder to obtain graphite fine powder.

WANG Q, WANG P, WANG J, ZHANG W, YU Z, WANG H