Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY CELL AND POSITIVE ELECTRODE CONTAINING SAME, AND LITHIUM ION SECONDARY CELL PROVIDED WITH SAID POSITIVE ELECTRODE
Document Type and Number:
WIPO Patent Application WO/2017/208703
Kind Code:
A1
Abstract:
Provided are a positive electrode active material for a lithium ion secondary cell capable of suppressing a rise in the internal resistance inside a cell associated with the charge-discharge cycle, a positive electrode containing the positive electrode active material, and a lithium ion secondary cell provided with the positive electrode. For this purpose, contained is a lithium composite compound represented by Li1+αNixCoyM1
1–x–y–zM2
zO2+β, and when porosity of opening diameter 0.6 µm or less measured using the mercury press-in method is defined as Pi, and porosity of opening diameter 0.6 µm or less after inputting to a mold of diameter 10 mm and pressing with a load of 40 MPa measured using the mercury press-in method is defined as Pp, the value of Pp/Pi is 1.5 or less.
Inventors:
TOKORO HISATO (JP)
NAKABAYASHI TAKASHI (JP)
TAKANO SHUICHI (JP)
TAKAHASHI SHIN (JP)
GUNJI AKIRA (JP)
TOYAMA TATSUYA (JP)
NAKABAYASHI TAKASHI (JP)
TAKANO SHUICHI (JP)
TAKAHASHI SHIN (JP)
GUNJI AKIRA (JP)
TOYAMA TATSUYA (JP)
Application Number:
PCT/JP2017/016837
Publication Date:
December 07, 2017
Filing Date:
April 27, 2017
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
H01M4/525; H01M4/505
Domestic Patent References:
| WO2012011212A1 | 2012-01-26 | |||
| WO2011108398A1 | 2011-09-09 |
Foreign References:
| JP2012014887A | 2012-01-19 | |||
| JP2012253009A | 2012-12-20 | |||
| JP2014509046A | 2014-04-10 | |||
| JP2016054101A | 2016-04-14 | |||
| JPS5313392B2 | 1978-05-10 |
Other References:
See also references of EP 3467916A4
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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