Title:
COMPOSITE ACTIVE MATERIAL FOR LITHIUM SECONDARY CELL AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2016/125819
Kind Code:
A1
Abstract:
Provided are: a composite active material for a lithium secondary cell that enables the fabrication of an electrode material in which volume expansion is limited even after repeated charging and discharging, and enables the fabrication of a lithium secondary cell that exhibits superior cycling characteristics; and a method for manufacturing the same. This composite active material for a lithium secondary cell comprises Si or an Si alloy, and a carbonaceous matter or a carbonaceous matter and a graphite component; wherein the present invention uses: a composite active material for a lithium secondary cell in which the average grain size (D50) of said active material is 1-40 μm, the specific surface area is 0.5-45 m2/g, the average pore diameter is 10-40 nm, and the open pore volume is 0.06 cm3/g or less; and a composite active material for a lithium secondary cell including a graphite component, hard carbon, soft carbon, and a cell active material capable of being combined with lithium ions.
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Inventors:
TAMAKI RYO (JP)
TSUKAMOTO HISASHI (JP)
KAWANISHI HIDEKI (JP)
TSUYOSHI TORU (JP)
KOHGO MASANORI (JP)
ARAKAWA TAICHI (JP)
MISAKI HIDEHIKO (JP)
ABE MASANORI (JP)
TSUKAMOTO HISASHI (JP)
KAWANISHI HIDEKI (JP)
TSUYOSHI TORU (JP)
KOHGO MASANORI (JP)
ARAKAWA TAICHI (JP)
MISAKI HIDEHIKO (JP)
ABE MASANORI (JP)
Application Number:
PCT/JP2016/053177
Publication Date:
August 11, 2016
Filing Date:
February 03, 2016
Export Citation:
Assignee:
TOSOH CORP (JP)
International Classes:
H01M4/587; C01B31/02; C01B31/04; H01M4/36; H01M4/38
Domestic Patent References:
| WO2012014259A1 | 2012-02-02 |
Foreign References:
| JP2002216751A | 2002-08-02 | |||
| JP2010282942A | 2010-12-16 | |||
| JP2011076744A | 2011-04-14 | |||
| JP2014044921A | 2014-03-13 |
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