国家/地区 中国（4）
IPC部 C（4）
IPC大类 C01（4）
IPC小类 C01B（4）
IPC C01B031/04（3）
发明人 CHENG H（4）
公开年 2011（4）
申请年 2009（4）
专利权人 CHINESE ACAD.（3） CHINESE ACAD.（2）

Mass preparation of large-size graphene includes weak oxidizing large-size graphite by modified Hummers method, stripping by weak ultrasonic-assisted or oscillating method, separating, and reducing by hydrazine or hydrazine hydrate.

CHENG H, ZHAO J, WU Z, GAO L, REN W, PEI S

Preparing graphene strip involves using Hummers method to obtain oxidized graphite, where selective modified line detect is used on surface containing oxygen function group during graphite oxidation.

CHENG H, ZHAO J, WU Z, GAO L, REN W, LIU B

Commercially preparing high-quality graphene with controllable layer number, comprises expanding and splitting oxidized graphite to obtain stripped graphite, reducing stripped graphite, ultrasonically dispersing, and high-speed centrifuging.

CHENG H, WU Z, GAO L, REN W, LIU B

Mass preparation of graphene, comprises utilizing cathode and anode for heating, carrying out cleavage and oxidation of graphite, dispersing peeled graphite in surfactant solution, and removing graphite which is not totally peeled.

CHENG H, CHEN Z, ZHAO J, WU Z, GAO L, REN W, LIU B