Negative electrode active material and method for manufacturing the same
By dispersing amorphous low-valence nano-silicon oxide as the negative electrode active material within a porous carbon structure, the problems of silicon material expansion and high irreversible capacity in lithium-ion secondary batteries are solved, thereby improving the electrolyte stability and cycle characteristics of the battery.
CN122249897APending Publication Date: 2026-06-19SHIN ETSU CHEMICAL CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHIN ETSU CHEMICAL CO LTD
- Filing Date
- 2024-11-19
- Publication Date
- 2026-06-19
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Figure CN122249897A_ABST
Abstract
This invention provides a negative electrode active material, which is a negative electrode active material having negative electrode active material particles, characterized in that: the negative electrode active material particles contain a porous carbon structure, and amorphous low-valence nano-silicon oxide is dispersed inside the porous carbon structure, utilizing solid-state... 29 When the negative electrode active material particles were measured by Si-CP / MAS-NMR, the maximum value was found in the range of -81 to -95 ppm. Therefore, a negative electrode active material is provided that can maintain battery characteristics while simultaneously increasing capacity.
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