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Title:
NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2018/043188
Kind Code:
A1
Abstract:
This negative electrode for nonaqueous electrolyte secondary batteries comprises a negative electrode collector and a negative electrode mixture layer provided on the negative electrode collector; and the negative electrode mixture layer contains a binder, a (meth)acrylic acid polymer and a negative electrode active material containing lithium titanate. The (meth)acrylic acid polymer present in the negative electrode mixture layer is 10% by mass or less relative to the total mass of the (meth)acrylic acid polymer and the binder. The (meth)acrylic acid polymer present in a portion (the upper region) of the negative electrode mixture layer from the surface to the halfway of the thickness thereof is 60% by mass or more with respect to the total mass of the (meth)acrylic acid polymer.

Inventors:
SUGIMORI Masanori
BABA Yasunori
YANAGIDA Katsunori
Application Number:
JP2017/029843
Publication Date:
March 08, 2018
Filing Date:
August 22, 2017
Export Citation:
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Assignee:
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. (1-61, Shiromi 2-chome Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
International Classes:
H01M4/131; H01M4/485; H01M4/62; H01M10/052
Foreign References:
JP2013114882A2013-06-10
JP2016129109A2016-07-14
JP2013134923A2013-07-08
JP2012069454A2012-04-05
JP2013093240A2013-05-16
JP2010225467A2010-10-07
Attorney, Agent or Firm:
KAMATA Kenji et al. (1-61, Shiromi 2-chome, Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
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