Title:
METHOD FOR PREPARING SILICON-BASED ACTIVE MATERIAL PARTICLES FOR SECONDARY BATTERY AND SILICON-BASED ACTIVE MATERIAL PARTICLES
Document Type and Number:
WIPO Patent Application WO/2016/013855
Kind Code:
A1
Abstract:
The present invention relates to a method for preparing silicon-based active material particles for a secondary battery and silicon-based active material particles. The method for preparing silicon-based active material particles according to an embodiment of the present invention comprises the steps of: providing silicon powder; dispersing the silicon powder into an oxidant solvent to provide a mixture prior to grinding; fine-graining the silicon powder by applying mechanical compression and shear stress to the silicon powder in the mixture prior to grinding to produce silicon particles; producing a layer of chemical oxidation on the fine-grained silicon particles with the oxidant solvent while applying mechanical compression and shear stress to produce silicon-based active material particles; and drying the resulting product comprising the silicon-based active material particles to yield silicon-based active material particles.
Inventors:
CHO YOUNG TAI (KR)
CHOI YONG GIL (KR)
PARK SEUNG CHUL (KR)
PARK SEON (KR)
SEO HEE YOUNG (KR)
PARK JEE HYE (KR)
LEE YONG EUI (KR)
CHOI YONG GIL (KR)
PARK SEUNG CHUL (KR)
PARK SEON (KR)
SEO HEE YOUNG (KR)
PARK JEE HYE (KR)
LEE YONG EUI (KR)
Application Number:
PCT/KR2015/007575
Publication Date:
January 28, 2016
Filing Date:
July 21, 2015
Export Citation:
Assignee:
ORANGE POWER LTD (KR)
International Classes:
H01M4/38; C01B33/02; C01B33/113; H01M4/48
Foreign References:
| JP2008004460A | 2008-01-10 | |||
| JP2007128766A | 2007-05-24 | |||
| JP4171904B2 | 2008-10-29 | |||
| JP2013131324A | 2013-07-04 |
Other References:
See also references of EP 3174140A4
Attorney, Agent or Firm:
KIM, KWON SEOK (KR)
김권석 (KR)
김권석 (KR)
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