公开(公告)号：US10818922B2

公开(公告)日：2020-10-27

申请号：US16268891

申请日：2019-02-06

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Yoon Chung ,  Hun-Gi Jung ,  Ji-Young Kim ,  Ghulam Ali ,  Mobinul Islam ,  Sang Ok Kim ,  Hyungseok Kim

IPC: H01M4/525 ,  H01M10/054 ,  H01M4/131 ,  H01M4/1391 ,  C01G51/04 ,  H01M4/02

Abstract: An anode active material for a sodium ion secondary battery, a sodium ion secondary battery including an anode active material, and an electric device including the sodium ion secondary battery are disclosed. The anode active material for a sodium ion secondary battery includes a cobalt tin spinel oxide represented by Co2.4Sn0.6O4. The sodium ion secondary battery includes an anode made of an anode active material composed of a cobalt tin spinel oxide represented by Chemical Formula 1 below: Co2+xSn1-xO4,  Chemical Formula 1 where x is a real number satisfying 0≤x≤0.9; an electrolyte; and a cathode. The sodium ion secondary battery has high capacity characteristics. The electric device including the sodium ion secondary battery includes an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, and an electric power storage system.

公开(公告)号：US10403886B2

公开(公告)日：2019-09-03

申请号：US15396752

申请日：2017-01-02

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Yoon Chung ,  Ji-Hoon Lee ,  Ghulam Ali ,  Hun-Gi Jung ,  Wonchang Choi ,  Won Young Chang ,  Si Hyoung Oh ,  Byung Won Cho

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/58 ,  H01M4/587 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/62 ,  H01M10/054 ,  H01M4/02

Abstract: Disclosed is an anode material for a sodium secondary battery. The anode material includes a tin fluoride-carbon composite composed of a tin fluoride and a carbonaceous material. The anode material can be used to improve the charge/discharge capacity, charge/discharge efficiency, and electrochemical activity of a sodium secondary battery. Also provided are a method for preparing the anode material and a sodium secondary battery including the anode material.