Title:
NEGATIVE ELECTRODE ACTIVE MATERIAL FOR ELECTRICAL DEVICES, METHOD FOR PRODUCING SAME, AND ELECTRICAL DEVICE USING THIS ACTIVE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/049239
Kind Code:
A1
Abstract:
[Problem] To provide a means which is capable of improving the cycle durability of an electrical device such as a lithium ion secondary battery.
[Solution] According to the present invention, a negative electrode active material which is composed of an Si-containing alloy that has a composition represented by chemical formula (1) SixSnyMzAaLib is used in an electrical device. (In chemical formula (1), M represents one or more transition metal elements; A represents unavoidable impurities; and x, y, z, a and b represent values in mass% of respective elements and satisfy 0 < x < 100, 0 ≤ y < 100, 0 < z < 100, 0.2 ≤ b ≤ 1.5, a is the balance, and x + y + z + a + b = 100.)
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Inventors:
ARAI MASAYA (JP)
WATANABE MANABU (JP)
CHIBA NOBUTAKA (JP)
YOSHIOKA YOUICHI (JP)
WATANABE MANABU (JP)
CHIBA NOBUTAKA (JP)
YOSHIOKA YOUICHI (JP)
Application Number:
PCT/JP2017/032121
Publication Date:
March 14, 2019
Filing Date:
September 06, 2017
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
H01M4/38
Domestic Patent References:
| WO2006129415A1 | 2006-12-07 |
Foreign References:
| JP2002367602A | 2002-12-20 | |||
| JP2008016446A | 2008-01-24 | |||
| JP2009503786A | 2009-01-29 | |||
| JP2004311429A | 2004-11-04 |
Other References:
See also references of EP 3680967A4
Attorney, Agent or Firm:
HATTA & ASSOCIATES (JP)
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