NEGATIVE ELECTRODE FOR ELECTRICAL DEVICE AND ELECTRICAL DEVICE PROVIDED WITH SAME

Title:

NEGATIVE ELECTRODE FOR ELECTRICAL DEVICE AND ELECTRICAL DEVICE PROVIDED WITH SAME

Document Type and Number:

WIPO Patent Application WO/2014/080895

Kind Code:

A1

Abstract:

[Problem] To provide a negative electrode for an electrical device such as a lithium ion secondary battery that maintains high cycle characteristics, that has a high initial capacity, and that exhibits well-balanced characteristics. [Solution] A negative electrode for an electrical device comprising a current collector and an electrode layer that includes a negative electrode active material that is arranged on the surface of the current collector, a conductive auxiliary agent, and a binder. The negative electrode for an electrical device is characterized in that: the negative electrode active material comprises an alloy represented by formula (1), namely, SixZnyMzAa (in formula (1), M is at least one metal selected from the group consisting of V, Sn, Al, C, and combinations thereof, A is unavoidable impurities, x, y, z, and a represent mass% values, and on this occasion, 0 < x < 100, 0 < y < 100, 0 < z < 100, 0 ≤ a ≤ 0.5, and x + y + z + a = 100); and the elongation (δ) in the electrode layer satisfies 1.29 <δ < 1.70%.

Inventors:

YAMAMOTO KENSUKE (JP)
WATANABE MANABU (JP)
MIKI FUMIHIRO (JP)
SANADA TAKASHI (JP)
CHIBA NOBUTAKA (JP)

Application Number:

PCT/JP2013/081146

Publication Date:

May 30, 2014

Filing Date:

November 19, 2013

Export Citation:

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Assignee:

NISSAN MOTOR (JP)

International Classes:

H01M4/134; C22C13/00; C22C18/00; C22C18/04; C22C21/02; C22C21/10; C22C27/02; H01M4/36; H01M4/38; H01M4/62; H01M4/66

Domestic Patent References:

WO2004004031A1	2004-01-08
WO2011065504A1	2011-06-03
WO2012121240A1	2012-09-13

Foreign References:

JP2004311429A	2004-11-04
JP2004228059A	2004-08-12
JP2009517850A	2009-04-30
JP2012185913A	2012-09-27

Other References: