Title:
BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/208806
Kind Code:
A1
Abstract:
[Problem] To provide a battery which can have improved cycling characteristics.
[Solution] A battery which includes a positive electrode, a negative electrode, and an electrolyte. The positive electrode includes a positive-active-material layer. The positive-active-material layer comprises positive-active-material particles, a fluorine-based binder having a melting point of 152-166°C, and a conduction aid. The surface of each positive-active-material particle is at least partly covered with a mixture of the fluorine-based binder and the conduction aid, the surface of the positive-active-material particles having an average degree of exposed areas of 32-55%. The positive-active-material particles comprise a lithium-transition metal oxide having a layered rock-salt type structure, the transition metal(s) being cobalt and/or nickel.
Inventors:
IWANE NOBUYUKI (JP)
HORIUCHI HIROSHI (JP)
NIWATA YUKI (JP)
HORIUCHI HIROSHI (JP)
NIWATA YUKI (JP)
Application Number:
PCT/JP2019/018060
Publication Date:
October 31, 2019
Filing Date:
April 26, 2019
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01M4/131; H01M4/36; H01M4/505; H01M4/525; H01M4/62
Domestic Patent References:
| WO2015076323A1 | 2015-05-28 | |||
| WO2016017071A1 | 2016-02-04 |
Foreign References:
| JP2002270180A | 2002-09-20 | |||
| JP2003157830A | 2003-05-30 | |||
| JP2006031987A | 2006-02-02 | |||
| JP2014127256A | 2014-07-07 |
Attorney, Agent or Firm:
SUGIURA, Masatomo et al. (JP)
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