国家/地区 韩国（2）
IPC部 H（2）
IPC大类 H01（2）
IPC小类
IPC
发明人 KIM J M（2）
公开年 2022（2）
申请年 2020（2） 
专利权人

Negative electrode active material used for binder-free electrochemical cell e.g. lithium-ion secondary battery, is composite in which graphene quantum dots are bonded to surface of metal oxide having microspherical structure.

YANG C M, KIM J M, JANG W, KIM J H, RYU J S, LEE M W

Manufacturing nitrogen-plane nitride semiconductor device, involves growing gallium nitride buffer layer on substrate, forming separation layer on buffer layer, and forming high electron mobility transistor structure.

KIM J M, YOUNG J J