国家/地区 中国（4） 美国（3） 欧洲专利局（EPO）（2） 日本（2） 世界知识产权组织（2）
IPC部 C（7）
IPC大类 C01（7）
IPC小类 C01B（7）
IPC C01B032/192（7）
发明人 ZHANG L（7）
公开年 2015（2） 2020（2） 2021（2）
申请年 2013（2）  2021（2） 
专利权人 SHENZHEN CAN.（3） CARBON NANO .（2）

Preparing large graphene used in e.g. medicine, involves dissolving potassium persulfate, putting graphite, stirring, oxidizing, centrifuging to obtain graphene solution and expandable graphite suspension, adding expanded graphite to mixed solvent for intercalation and dispersion, and centrifuging.

XIE C, XU Z, XIA G, HAN C, LIU J, ZHANG L, TANG Z, XU L

Preparation of graphene-based composite for supercapacitor, involves reacting concentrated sulfuric acid, graphite powder and sodium nitrate, adding potassium permanganate, heating, adding hydrogen peroxide, and dissolving potassium permanganate in upper layer graphene oxide suspension.

MA J, DU W, MEI J, ZHANG L

Preparation of graphene heat dissipation film involves preparing modified graphite oxide slurry using e.g. graphite oxide and hydrogen peroxide, applying on permeable nylon cloth, drying, peeling, heating, cooling, calendaring and cutting.

BAO N, WENG C, ZHANG L, LI C

Preparing nitrogen-doped graphene by adding graphite powder, sodium nitrate, concentrated sulfuric acid and potassium permanganate, heating, adding hydrogen peroxide, washing precipitate, dialyzing, adding urea, freeze-drying and heating.

SHENG Z, WEI K, YIN J, ZHONG H, ZHANG L

Preparation of graphene e.g. graphite flakes, involves puffing graphene oxide into dispersant chosen from water, inorganic acid, and high boiling solvent to form dispersant solution, and subjecting solution to suction filtration, and drying.

ZHANG L, ZHANG M

Preparing anthracite based graphene oxide comprises e.g. preparing ultra-clean anthracite powder, adding dispersant, carrying out ultrasonication to prepare dispersion liquid, and preparing graphene oxide colloid solution.

ZHANG L, ZHANG M

Preparing graphene oxide based on mixed acid system comprises e.g. washing graphite, drying, smashing, passing through sieve, preparing graphite powder, adding plugging agent, preparing first acid system and then second acid system.

ZHANG L, ZHANG M