国家/地区 中国（7）
IPC部 C（7）
IPC大类 C01（7）
IPC小类 C01B（7）
IPC C01B032/19（6） C01B032/184（2） C01B032/194（2）
发明人 ZHANG R（7）
公开年 2020（3） 2018（2） 2019（2）
申请年 2019（3）  2018（2）  2020（2） 
专利权人 UNIV YANSHAN（7）

Preparation of green graphene nanosheets involves mixing graphite, urea peroxide and hydrogen peroxide, maintaining obtained mixture and processing by microwave, and ultrasonically-dispersing obtained graphene aggregate in ethanol.

ZHANG R, ZHANG Z, WANG P

Preparation of graphene film includes pretreating at low temperature mixture of natural graphite and concentrated sulfuric acid, mixing with oxidant, and performing heat preservation to obtain expanded graphite.

ZHANG R, LIU X

Preparing sulfonated grapheme useful in energy storage comprises preparing saccharified graphene powder, ultrasonically dispersing into dichloromethane solution, adding chlorosulfonic acid, stirring reaction, washing and freeze-drying.

WANG L, ZHU K, TIAN H, TAN Y, ZHANG R, YU Z, LI W, HE Y, LAI Y

Method for preparing high-quality large-size graphene, involves ball-milling original graphite powder for short period of time to destroy graphite edge structure, and performing oxidation intercalation stripping at low temperature.

ZHANG R, WU W

Graphene preparation involves ultrasonically mixing natural graphite and peroxyacetic acid uniformly to form mixed liquid, and then carrying out microwave treatment of mixed liquid after standing at room temperature.

ZHANG R, WANG P

Preparing high-quality graphene comprises ultrasonically mixing concentrated sulfuric acid and peroxyacetic acid to obtain a mixed solution, adding graphite, stirring uniformly, allowing to stand at room temperature, washing and drying.

ZHANG R, LIU M, WU W

Preparing high quality large-sized graphene comprises e.g. mixing original graphite and potassium hydroxide, grinding, placing powder in crucible, placing in tubular furnace, heating, cooling to obtain potassium hydroxide-etched graphite.

ZHANG R, LIU M