国家/地区 中国（4）
IPC部 C（4）
IPC大类 C01（4）
IPC小类 C01B（4）
IPC C01B032/205（4）
发明人 ZHANG L（4）
公开年
申请年 2021（2） 
专利权人

Method for preparing coating diaphragm of lithium ion battery used in e.g. portable electric device involves uniformly coating substrate film with coating slurry by roller coating, and drying and rolling.

SHEN Y, ZHANG L, ZHANG X

Preparing rice husk carbon-based graphitized carbon material by removing silicon with hot alkali, heating, reacting, filtering mixture, drying under reduced pressure, mixing catalyst and resulted raw materials by ball milling and carrying out catalytic graphitization of mixed rice husk charcoal.

ZHANG L, LIU P, CHEN Z, DU W

Nitrogen-doped graphene material useful in the field of catalysts, preferably an electrochemical catalyst comprises a nitrogen element containing sp hybridization state.

WANG D, ZHAO Y, WAN J, ZHANG L

Preparation of graphene oxide with walnut shell by soaking walnut shell powder in hydrochloric acid, drying, mixing with ferric oxide, carbonizing, adding aluminum dioxide and activated carbon, heating, acidifying and stripping.

ZHANG L, JIANG F, CHENG D, WANG C, FAN W, SHENG D