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Title:
NEGATIVE ELECTRODE ACTIVE MATERIAL FOR ELECTRICAL DEVICES
Document Type and Number:
WIPO Patent Application WO/2012/121240
Kind Code:
A1
Abstract:
The negative electrode active material for electrical devices according to the present invention comprises an alloy containing more than 25 mass% but less than 54 mass% silicon, more than 1 mass% but less than 47mass% carbon, more than 13 mass% but less than 69 mass% zinc, with the remainder being made up of inevitable impurities. The negative electrode active material may be obtained using a multi-dimensional magnetron sputtering device, with silicon, carbon and zinc as targets, for example. Electrical devices employing the negative electrode active substance have improved initial charging/discharging efficiency, while maintaining their cycle characteristics.

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Inventors:
WATANABE MANABU
TANAKA OSAMU
YOSHIDA MASAO
Application Number:
PCT/JP2012/055665
Publication Date:
September 13, 2012
Filing Date:
March 06, 2012
Export Citation:
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Assignee:
NISSAN MOTOR (JP)
WATANABE MANABU
TANAKA OSAMU
YOSHIDA MASAO
International Classes:
C22C18/00; H01M4/42; C22C30/06; H01M4/134; H01M4/38
Foreign References:
JP2010097922A2010-04-30
JP2005032687A2005-02-03
JP4406789B22010-02-03
Other References:
SUKEUN YOON ET AL.: "Electrochemical properties of Si-Zn-C composite as an anode material for lithium-ion batteries", JOURNAL OF POWER SOURCES, vol. 167, no. 2, 1 March 2007 (2007-03-01), pages 520 - 523, XP022032236
See also references of EP 2685531A4
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (JP)
Hidekazu Miyoshi (JP)
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Claims:



 
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