Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/065162
Kind Code:
A1
Abstract:
A positive electrode active material for non-aqueous electrolyte secondary batteries comprises a Ni-containing lithium-based complex oxide A and a Ni-containing lithium-based complex oxide B. Each of the Ni-containing lithium-based complex oxide A and the Ni-containing lithium-based complex oxide B contains Ni in an amount of 55 mol% or more relative to the total number of moles of metal elements excluding Li, the Ni-containing lithium-based complex oxide A has an average primary particle diameter of 2 μm or more, an average secondary particle diameter of 2 to 6 μm, a particle fracture load of 5 to 35 mN and a BET specific surface area of 0.5 m2/g to 1.0 m2/g, and the Ni-containing lithium-based complex oxide B has an average primary particle diameter of 1 μm or less, an average secondary particle diameter of 10 to 20 μm, a particle fracture load of 10 to 35 mN and a BET specific surface area of 0.1 m2/g to 1.0 m2/g. The positive electrode active material enables the provision of a non-aqueous electrolyte secondary battery having a high capacity and excellent output properties and also having satisfactory cycle properties and storage properties.
Inventors:
HIRATSUKA HIDEKAZU
WATANABE HIROKI
WATANABE HIROKI
Application Number:
PCT/JP2020/028208
Publication Date:
April 08, 2021
Filing Date:
July 21, 2020
Export Citation:
Assignee:
SANYO ELECTRIC CO (JP)
International Classes:
C01G53/00; H01M4/36; H01M4/505; H01M4/525
Domestic Patent References:
| WO2010134156A1 | 2010-11-25 |
Foreign References:
| JP2015164119A | 2015-09-10 | |||
| JP2017102995A | 2017-06-08 | |||
| JP2011113825A | 2011-06-09 | |||
| JP2011113825A | 2011-06-09 |
Attorney, Agent or Firm:
TOKUDA Yoshiaki et al. (JP)
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