国家/地区 中国（3）
IPC部 C（4）
IPC大类 C01（4）
IPC小类 C01B（4）
IPC C01B032/215（4）
发明人 ZHU S（2）
公开年 2021（2）
申请年 2021（4）
专利权人

Removing metal impurities in carbon material involves performing heat treatment, mixing carbon material and metal salt, and sequentially washing heat-treated mixture with acid and washing with water to obtain purified carbon material.

ZHU S, LI Y

Manufacture of functional graphene used in semiconductor device, involves mixing carbon-based material, acid comprising amine group and carboxyl group, acetic acid and solvent, raising temperature and stirring, and cooling resultant of stirring.

KIM J, SONG J

Preparing high pure coal series graphite used for preparing graphene, involves soaking in electrolyte, keeping constant voltage to obtain expanded graphite anode sheet, and rising voltage to peel off anode until voltage changed to zero.

SUN H, LIU L, HUA Z, CAO W, ZHANG X, QUAN Y, JI L

Regenerating graphite material used as cathode material for lithium-ion batteries, comprises e.g. sieving waste lithium ion battery cathode graphite material to obtain graphite powder and obtaining graphene oxide solution.

WANG C, WU Z, XIAO S, ZHU S, FENG C, LI X, MA C, XU Y, WANG Y