Title:
SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/059803
Kind Code:
A1
Abstract:
This secondary battery is provided with a positive electrode, a negative electrode, and an electrolyte. The positive electrode is provided with a positive electrode active material layer which includes: positive electrode active material particles including Al on the surfaces; and a fluorine-based binder having a melting point in the range of 152-166˚C inclusive. The ratio y/x of the ratio y of Al in surface regions of the positive electrode active material particles, to the ratio x of Al in internal regions of the positive electrode active material particles satisfies the expression 149%≤y/x≤305%.
Inventors:
IWANE NOBUYUKI (JP)
HORIUCHI HIROSHI (JP)
OUKI ATSUSHI (JP)
ENDO SUSUMU (JP)
IHARA MASAYUKI (JP)
HORIUCHI HIROSHI (JP)
OUKI ATSUSHI (JP)
ENDO SUSUMU (JP)
IHARA MASAYUKI (JP)
Application Number:
PCT/JP2019/036778
Publication Date:
March 26, 2020
Filing Date:
September 19, 2019
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01M10/052; H01M4/131; H01M4/36; H01M4/505; H01M4/525; H01M4/62; H01M10/0567
Foreign References:
| JP2003017055A | 2003-01-17 | |||
| JP2002270180A | 2002-09-20 | |||
| JP2014086221A | 2014-05-12 | |||
| JP2016139583A | 2016-08-04 | |||
| JP2010170741A | 2010-08-05 | |||
| JP2016031881A | 2016-03-07 | |||
| KR20180055379A | 2018-05-25 |
Attorney, Agent or Firm:
SUGIURA, Masatomo et al. (JP)
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