国家/地区 中国（4）
IPC部 C（4）
IPC大类 C01（4）
IPC小类 C01B（4）
IPC C01B032/198（4）
发明人 HE X（4）
公开年 2019（4）
申请年 2019（4） 
专利权人

Preparing graphene-reinforced biomass porous carbon electromagnetic wave-absorbing material, involves pretreating egg white, preparing graphene oxide slurry, crushing, heating, denaturing protein, freezing and carbonizing carbon precursor.

PENG Q, LIU Z, HE X

Preparation of low-defect graphene film by directionally freezing aqueous graphene oxide solution with liquid nitrogen to obtain anisotropic graphene oxide frozen foam, drying, reducing graphene oxide, carbonizing and graphitizing.

ZHU Y, PENG Q, HE X

Preparing surface functionalized graphene material for electrochemical sensor, involves freeze-drying graphene oxide, dissolving graphene oxide powder, adding thiourea or urea, performing hydrothermal reaction, and vacuum drying the mixture.

CHEN X, BI C, ZHAO J, HE X, WU Y

Preparation of graphene oxide by adding potassium permanganate to sulfuric acid and phosphoric acid mixture, reacting with graphite flakes in ice bath, keeping in oil bath, adding hydrogen peroxide, centrifuging, washing, and freeze-drying.

CHENG Y, HE X, LI Y, SHI Y