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US 12,113,205 B2Granted
Negative electrode active material, negative electrode, and secondary battery
AssigneeMurata Manufacturing Co., Ltd.
InventorNaoki Hayashi
Life of this patent
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Abstract
The negative electrode active material includes a plurality of first negative electrode active material particles. Each of the first negative electrode active material particles includes a central portion including silicon and a covering portion provided on a surface of the central portion. The covering portion includes a (meth)acrylic acid-based polymer and a compound having a siloxane bond. The (meth)acrylic acid-based polymer includes at least one of poly(meth)acrylate or a derivative of poly(meth)acrylic acid.
Claims17
A negative electrode active material comprising
- a plurality of first negative electrode active material particles each including:
- a central portion including silicon;
- and
- a covering portion provided on a surface of the central portion, the covering portion including a (meth)acrylic acid-based polymer and a compound having a siloxane bond,
- wherein the (meth)acrylic acid-based polymer includes at least one of poly(meth)acrylate or a derivative of poly(meth)acrylic acid.
2 more elements
Dependencies are inferred from the claim text.