Positive electrode active material for non-aqueous electrolyte secondary battery

JP7682981B2Active Publication Date: 2025-05-26HONDA MOTOR CO LTD +1
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Patent Information

Application Number
JP2023206075
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2016-03-31
Filing Date
2023-12-06
Publication Date
2025-05-26
Estimated Expiration
2037-03-24

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Abstract

To provide a cathode active material for a nonaqueous electrolyte secondary battery, which can achieve both of a high-output property and high endurance.SOLUTION: A cathode active material for a nonaqueous electrolyte secondary battery comprises a group of lithium transition metal composite oxide particles of which the average particle size DSEM is 1 μm or more and 7 μm or less, the 50%-particle size D50 in a cumulative particle-size distribution on a volume basis is 1 μm or more and 5.5 μm or less, and the ratio D50 / DSEM of D50 to DSEM is equal to or larger than 1 and equal to or smaller than 4 according to electron microscope observation. The lithium transition metal composite oxide has a layered structure, and in a composition of the lithium transition metal composite oxide, the ratio of a mole number nickel to a total mole number of metal excluding lithium is from 0.3 up to 0.95.SELECTED DRAWING: Figure 3
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Citation Information

Patent Citations

  • Lithium transition metal oxide compound for lithium secondary battery positive electrode active material, its manufacturing method and secondary battery using it

    JP2001243949A

  • Positive electrode active material for nonaqueous electrolyte secondary battery and method of manufacturing the same

    JP2003123748A

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    JP2004355824A

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  • Method for manufacturing positive electrode active material for nonaqueous electrolyte secondary battery

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