リチウムイオン二次電池用正極活物質前駆体、リチウムイオン二次電池用正極活物質、リチウムイオン二次電池用正極活物質前駆体の製造方法、リチウムイオン二次電池用正極活物質の製造方法、リチウムイオン二次電池

Title:

Document Type and Number:

Japanese Patent JP7395944

Kind Code:

B2

Abstract:

To provide a positive electrode active material precursor for a lithium ion secondary battery capable of suppressing gas generation when used in a lithium ion secondary battery as a positive electrode active material for a lithium ion secondary battery.SOLUTION: In a positive electrode active material precursor for a lithium ion secondary battery including metal composite hydroxide particles, the metal composite hydroxide particles include Ni, Mn, Zr, and an additive element M in the ratio of the amount of substance of Ni: Mn: Zr: M=a: b: c: d (0.70≤a≤0.98, 0.01≤b≤0.20, 0.0003≤c≤0.02, 0.01≤d≤0.20, a+b+c+d=1, and the one or more types of additive element M is selected from Co, W, Mo, V, Mg, Ca, Al, Ti, and Ta). In the cross section of the metal composite hydroxide particle, the ratio of the maximum zirconium concentration to the average zirconium concentration is 2 or less when the line analysis is performed along the radial direction from the center by EDX.SELECTED DRAWING: Figure 4

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Inventors:

Haruki Kaneda
Yuki Oshika
Takaaki Ando

Application Number:

JP2019189540A

Publication Date:

December 12, 2023

Filing Date:

October 16, 2019

Export Citation:

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Assignee:

Sumitomo Metal Mining Co., Ltd.

International Classes:

H01M4/525; H01M4/505

Domestic Patent References:

JP2017157548A
JP2012079554A

Foreign References:

CN109336193A
EP3093272A1
WO2019087503A1

Attorney, Agent or Firm:

Tadashige Ito
Tadahiko Ito

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