国家/地区 世界知识产权组织（3）
IPC部 C（3） H（3）
IPC大类 C01（3） H01（3）
IPC小类 C01B（3）
IPC C01B032/215（3）
发明人
公开年 2023（2）
申请年 2022（3）
专利权人

Purification of graphitic material used for negative electrode material, involves electrochemically treating crude graphitic material comprising impurity chosen from metal and metal oxide, using predetermined electrolyte, predetermined anode composition and predetermined cathode composition.

CORNEJO A, ROY A K, LO V C, CHIVERS B, NOORBEHESHT N

Process used for purification of graphite material, involves subjecting graphite material to oxidizing conditions, subjecting metal sulfide-lean graphite material to carbochlorination, and purging metal chlorides from metal chloride-rich graphite material, thus obtains purified graphite material.

BOISVERT R, BOULANGER P, BRASSARD M, DESAULNIERS E, NORVAL G, RIECKMANN P, TAN A, TAN Z

Producing graphene from spent lithium-ion battery, by applying acid leaching solution to anode of lithium-ion battery to produce expanded graphite, applying hydrothermal process to expanded graphite and subjecting purified graphite to shear mixing contemporaneously combined with hydrogen passivation.

LI X, ZHOU Y, GAO Z