Title:
SILICON NANOCOMPOSITE STRUCTURE POWDER FOR NEGATIVE ELECTRODE MATERIAL, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2022/080762
Kind Code:
A1
Abstract:
The present invention relates to a silicon nanocomposite structure powder for a negative electrode material, and a method for manufacturing same, wherein a SiOx layer is formed on the surface of ultrafine silicon powder by a low-temperature oxidation reaction, and then the silicon powder is milled with graphite powder having excellent conductivity to form a nanocomposite structure, thus achieving improved discharge capacity, efficiency, and cycle characteristics. The method for manufacturing a silicon nanocomposite structure powder for a negative electrode material according to the present invention is characterized by comprising the steps of: mechanically milling micro-sized micro silicon powder into nano-sized nano silicon powder; forming an SiOx (1
Inventors:
LEE KEE SUN (KR)
CHOI YI-SIK (KR)
MOON SUNG-HWAN (KR)
YOO HYOUNG-GEUN (KR)
CHOI YI-SIK (KR)
MOON SUNG-HWAN (KR)
YOO HYOUNG-GEUN (KR)
Application Number:
PCT/KR2021/013822
Publication Date:
April 21, 2022
Filing Date:
October 07, 2021
Export Citation:
Assignee:
S MAT INC (KR)
International Classes:
H01M4/36; C01B32/19; C01B33/02; H01M4/38; H01M4/48; H01M4/587; H01M4/62; H01M10/052
Foreign References:
| KR20030041816A | 2003-05-27 | |||
| JP2013187097A | 2013-09-19 | |||
| KR20200009605A | 2020-01-30 | |||
| KR101081864B1 | 2011-11-09 | |||
| KR101999191B1 | 2019-07-11 | |||
| KR20070105874A | 2007-10-31 | |||
| KR20050119214A | 2005-12-20 |
Other References:
HUANG SHIQIANG, CHEONG LING-ZHI, WANG DEYU, SHEN CAI: "Nanostructured Phosphorus Doped Silicon/Graphite Composite as Anode for High-Performance Lithium-Ion Batteries", APPLIED MATERIALS & INTERFACES, AMERICAN CHEMICAL SOCIETY, US, vol. 9, no. 28, 19 July 2017 (2017-07-19), US , pages 23672 - 23678, XP055922160, ISSN: 1944-8244, DOI: 10.1021/acsami.7b04361
YONG-SHENG HU, REZAN DEMIR-CAKAN, MARIA-MAGDALENA TITIRICI, JENS-OLIVER MÜLLER, ROBERT SCHLÖGL, MARKUS ANTONIETTI, JOACHIM MAIER: "Superior Storage Performance of a Si@SiOx/C Nanocomposite as Anode Material for Lithium-Ion Batteries", ANGEWANDTE CHEMIE INTERNATIONAL EDITION, ¬VERLAG CHEMIE| :, vol. 47, no. 9, 15 February 2008 (2008-02-15), pages 1645 - 1649, XP055043259, ISSN: 14337851, DOI: 10.1002/anie.200704287
YONG-SHENG HU, REZAN DEMIR-CAKAN, MARIA-MAGDALENA TITIRICI, JENS-OLIVER MÜLLER, ROBERT SCHLÖGL, MARKUS ANTONIETTI, JOACHIM MAIER: "Superior Storage Performance of a Si@SiOx/C Nanocomposite as Anode Material for Lithium-Ion Batteries", ANGEWANDTE CHEMIE INTERNATIONAL EDITION, ¬VERLAG CHEMIE| :, vol. 47, no. 9, 15 February 2008 (2008-02-15), pages 1645 - 1649, XP055043259, ISSN: 14337851, DOI: 10.1002/anie.200704287
Attorney, Agent or Firm:
LEE, Jae Hwa (KR)
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