公开(公告)号：US20200062655A1

公开(公告)日：2020-02-27

申请号：US16198878

申请日：2018-11-23

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jae Hyeok SHIM ,  Tae Jun HA ,  Jin Yoo SUH

IPC: C04B35/58 ,  C04B35/626 ,  C01F17/00

Abstract: A method of preparing cerium boride powder, according to the present invention, includes a first step for generating mixed powder by mixing at least one selected from among cerium chloride (CeCl3) powder and cerium oxide (CeO2) powder, at least one selected from among magnesium hydride (MgH2) powder and magnesium (Mg) powder, and boron oxide (B2O3) powder, a second step for generating composite powder including cerium boride (CexBy) and at least one selected from among magnesium oxide (MgO) and magnesium chloride (MgCl2), by causing reaction in the mixed powder at room temperature based on a ball milling process, and a third step for selectively depositing cerium boride powder by dispersing the composite powder in a solution.

公开(公告)号：US20190221882A1

公开(公告)日：2019-07-18

申请号：US16102849

申请日：2018-08-14

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Young Whan CHO ,  Ju Young JANG ,  In Yeong KANG ,  Young Su LEE ,  Jin Yoo SUH ,  Chan Soon KANG

IPC: H01M10/0525 ,  H01M4/38 ,  H01M4/133 ,  H01M4/66

CPC classification number: H01M10/0525 ,  H01M4/133 ,  H01M4/386 ,  H01M4/668

Abstract: Provided is an anode active material for a lithium (Li) secondary battery, the material including silicon (Si)-based alloy powder, a carbonized layer at least partially surrounding the Si-based alloy powder serving as cores, and carbon nanofibers (CNFs) extending outward from a surface of the Si-based alloy powder through the carbonized layer.