国家/地区 中国（13）
IPC部 C（13）
IPC大类 C01（13）
IPC小类 C01B（13）
IPC C01B032/19（13）
发明人 ZHANG R（13）
公开年 2020（5） 2018（4） 2017（2） 2019（2）
申请年 2020（5）  2017（3）  2018（3）  2019（2） 
专利权人 UNIV YANSHAN（6） BEIJING QING.（5）

Preparation of large-area graphene by adding iron ore material to high temperature furnace, reducing to high-temperature molten iron and graphite flakes-containing product using reducing agent, and adding molten iron to steelmaking furnace.

ZHANG R

Preparing large-area graphene comprises e.g. providing first shear force generated by liquid flow to graphite dispersion liquid, and acting shear force on dispersion liquid graphite flakes to disperse graphite flakes to graphene large area.

ZHANG R

Device used for high-efficiency manufacturing of large-area graphene, comprises nozzle including feed port, discharge port, and tube body connected between feed port and discharge port, and pressurizer connected to feed port.

ZHANG R

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

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 graphene nitride useful in energy storage device, preferably super capacitor, comprises taking graphite as anode and glycine ammonia aqueous solution as electrolyte, electrolyzing, preprocessing, filtering, washing and drying.

YANG Y, TENG M, ZHANG R, LONG G

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