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Patent Searching and Data


Title:
NEGATIVE ELECTRODE AND LITHIUM ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/182150
Kind Code:
A1
Abstract:
A negative electrode which is provided with a collector and a negative electrode layer that is coated on at least one surface of the collector, and which is configured such that: the negative electrode layer contains either phosphorus or fluorine; the phosphorus content or the fluorine content in a central part of the negative electrode layer is different from the average phosphorus content or the average fluorine content in an edge part that is closer to the lateral surface than the central part; and the phosphorus content P1 in the central part and the average phosphorus content P2 in the edge part satisfy the relational expression 1 < P1/P2 ≤ 1.30, or alternatively, the fluorine content F1 in the central part and the average fluorine content F2 in the edge part satisfy the relational expression 1 < F1/F2 ≤ 1.22.

Inventors:
SHIMIZU CHIEKO (JP)
Application Number:
PCT/JP2019/012259
Publication Date:
September 26, 2019
Filing Date:
March 22, 2019
Export Citation:
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Assignee:
TDK CORP (JP)
International Classes:
H01M4/13; H01M4/62; H01M10/052; H01M10/0566
Foreign References:
JP2013225440A2013-10-31
JP2015099725A2015-05-28
JP2018006289A2018-01-11
JP2013069579A2013-04-18
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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