公开(公告)号：US11837715B2

公开(公告)日：2023-12-05

申请号：US17179354

申请日：2021-02-18

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Yoon Chung ,  Ha Kyung Roh ,  Moeez Iqra ,  Eun Seong Kim ,  Hun-Gi Jung ,  Won Young Chang

IPC: H01M4/36 ,  H01M4/58 ,  H01M10/054 ,  H01M4/48 ,  H01M4/02

CPC classification number: H01M4/364 ,  H01M4/483 ,  H01M4/582 ,  H01M10/054 ,  H01M2004/028

Abstract: The present disclosure provides a composite wherein NaCl nanoparticles are uniformly dispersed on reduced graphene oxide (rGO), a positive electrode active material including the same, a sodium secondary battery including the same, and a method for preparing the same. The positive electrode active material according to the present disclosure has a structure wherein NaCl nanoparticles are uniformly dispersed on rGO in a one-step process through chemical self-assembly. Therefore, the positive electrode active material according to the present disclosure exhibits superior electrochemical properties with high capacity because the small NaCl particles are dispersed uniformly and is economically favorable because the preparation process is simple.

公开(公告)号：US11837726B2

公开(公告)日：2023-12-05

申请号：US16829689

申请日：2020-03-25

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Moeez Iqra ,  Ji-Young Kim ,  Jaeho Park ,  Hee-Dae Lim ,  Hun-Gi Jung ,  Won Young Chang ,  Minah Lee ,  Seungho Yu ,  Kyung Yoon Chung

IPC: H01M4/58 ,  C01D3/04 ,  H01M4/02

CPC classification number: H01M4/582 ,  C01D3/04 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2002/77 ,  C01P2002/85 ,  C01P2004/04 ,  C01P2006/40 ,  H01M2004/021 ,  H01M2004/028

Abstract: The present disclosure relates to a cathode active material for a secondary battery, a cathode for a secondary battery including the same, a secondary battery including the cathode for a secondary battery and manufacturing methods thereof. More particularly, it is possible to obtain a secondary battery having excellent electrochemical characteristics by electrochemically inducing a structural phase change in the cathode active material of a secondary battery including NaCl as a cathode active material.