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US 12,763,324 B2Granted
Negative active material for rechargeable lithium battery and rechargeable lithium battery including same
AssigneeSamsung SDI Co., Ltd.
InventorsHyejin Kim, Yongseok Kim, Sojeong Yu, Kyeu Yoon Sheem, Jungjoon Kim, Jaewon Kim, Jaehou Nah, Eunjoo Lee
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Abstract
A negative active material for a rechargeable lithium battery, having a core including porous silicon and about 1 wt % to about 12 wt % based on 100 wt % of a total weight of the negative active material of magnesium and a carbon layer on a surface of the core, to more effectively inhibit the expansion of the negative electrode and thereby more effectively inhibit the expansion of the secondary battery.
Claims17
A negative active material for a rechargeable lithium battery, comprising:
- a core comprising porous silicon and about 1 wt % to about 12 wt % based on 100 wt % of a total weight of the negative active material of magnesium;
- and
- a carbon layer on a surface of the core,
- wherein the porous silicon comprises pores having an average size of about 50 nm to about 100 nm, and
- wherein the carbon layer comprises an amorphous carbon.
2 more elements
Dependencies are inferred from the claim text.