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US 2025/0158023 A1Published application
Negative electrode active material for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsTakuya Jin, Taisuke Asano
Life of this patent
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Abstract
A negative electrode active material for a non-aqueous electrolyte secondary battery according to one example of an embodiment comprises composite particles (30) that include a lithium aluminate phase (31) and a silicon phase (32) dispersed in the lithium aluminate phase (31). The composite particles (30) have an internal porosity of 25% or less before being charged and discharged for the first time.
Claims6
A negative electrode active material for a non-aqueous electrolyte secondary battery, comprising composite particles including:
- a lithium aluminate phase;
- and
- a silicon phase dispersed in the lithium aluminate phase,
- wherein the composite particles have a porosity inside the particles of less than or equal to 25% before first charge and discharge.
1 more element
Dependencies are inferred from the claim text.