非水電解質二次電池
JP7891688B2Active Publication Date: 2026-07-17PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
- Filing Date
- 2021-12-06
- Publication Date
- 2026-07-17
AI Technical Summary
Benefits of technology
【0007】 本開示の一態様によれば、正極活物質として、Ni含有量が多いリチウム遷移金属複合酸化物を用いた非水電解質二次電池において、充放電に伴う容量低下を抑制することができる。本開示に係る非水電解質二次電池は、充放電サイクル特性に優れる。
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Abstract
A nonaqueous electrolyte secondary battery according to one embodiment of the present disclosure is provided with a positive electrode, a negative electrode and a nonaqueous electrolyte; and the positive electrode contains a lithium-transition metal composite oxide that has a layered structure, while containing at least Ni and Mo. With respect to the lithium-transition metal composite oxide, the content of Ni is from 80% by mole to 95% by mole relative to the total number of moles of metal elements excluding Li, and the content of Mo is less than 3% by mole relative to the total number of moles of metal elements excluding Li. The negative electrode comprises a negative electrode mixture layer that contains a negative electrode active material, and a coating film that is formed on the surface of the negative electrode mixture layer, while containing Mo. The content of Mo in the negative electrode is from 0.5 ppm to 120 ppm relative to the total mass of the lithium-transition metal composite oxide in the positive electrode.
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