Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS RECHARGEABLE BATTERY, AND NONAQUEOUS ELECTROLYTE RECHARGEABLE BATTERY
Document Type and Number:
WIPO Patent Application WO/2018/043190
Kind Code:
A1
Abstract:
The purpose of this invention is to provide a positive electrode active material with which it is possible to reduce DC resistance, while containing a nickel-containing lithium transition metal oxide having a high Ni content. This positive electrode active material for nonaqueous electrolyte rechargeable battery contains a Ni-containing lithium transition metal oxide (Ni ≥ 80 mol%) having a layered structure, and lithium borate, and the Ni-containing lithium transition metal oxide is made up of secondary particles obtained by aggregating primary particles. The lithium borate is adhered to the surface of the primary particles, and the ratio b of lithium borate with respect to the total molar quantity of metal elements aside from lithium in the Ni-containing lithium transition metal oxide falls within the range of 0 mol% < b ≤ 0.5 mol% when converted to elemental boron, and the void ratio h in the secondary particles is within the range of 2% < h < 6%.
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Inventors:
AOKI YOSHINORI
SAITOU MOTOHARU
OGASAWARA TAKESHI
SAITOU MOTOHARU
OGASAWARA TAKESHI
Application Number:
PCT/JP2017/029845
Publication Date:
March 08, 2018
Filing Date:
August 22, 2017
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01M4/525; H01M4/36
Domestic Patent References:
| WO2015008582A1 | 2015-01-22 | |||
| WO2009141991A1 | 2009-11-26 |
Foreign References:
| JP2013137947A | 2013-07-11 | |||
| JP2002042811A | 2002-02-08 | |||
| JP2013073833A | 2013-04-22 | |||
| JPH1050314A | 1998-02-20 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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