Positive electrode active material for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery

By adding SrMnO3 as the positive electrode active material inside or outside the secondary particles of lithium transition metal composite oxide, the problem of reduced battery capacity caused by side reactions in non-aqueous electrolyte secondary batteries is solved, and the durability and battery capacity are improved.

CN115136353BActive Publication Date: 2026-07-03PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
Filing Date
2021-02-25
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

In existing non-aqueous electrolyte secondary batteries, side reactions between the positive electrode active material and the electrolyte lead to a reduction in battery capacity, especially when using high-energy-density positive electrode active materials.

Method used

The positive electrode active material, which contains SrMnO3 inside or outside the secondary particles of lithium transition metal composite oxide, is used to suppress the occurrence of side reactions while maintaining good lithium-ion conductivity.

Benefits of technology

It improves the durability and capacity of the secondary battery, and enhances the battery's charge and discharge performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The positive electrode active material for non-aqueous electrolyte secondary batteries contains lithium transition metal composite oxides that can absorb, store, and release Li, and SrMnO3 is contained inside or outside the secondary particles of the lithium transition metal composite oxides.
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Citation Information

Patent Citations

  • Positive electrode active material for lithium ion secondary battery, positive electrode, lithium ion secondary battery, and method for manufacturing positive electrode active material for lithium ion secondary battery

    JP2012138197A

  • Positive active material, method of preparing the same, and secondary battery using the same

    JP2013191540A

  • Positive electrode for lithium ion secondary battery and manufacturing method thereof

    US20180316003A1