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US 2025/0158043 A1Published application
Anode material, negative electrode paste and lithium-ion battery
AssigneesBtr New Material Group Co., Ltd., Dingyuan New Energy Technology Co., Ltd.
InventorsLijuan QU, Chunlei PANG, Wei XIE, Jianguo REN, Xueqin HE
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Abstract
An anode material, a preparation method therefor and a lithium-ion battery are provided. The anode material includes a silicon-based active substance and a coating layer located on at least a partial surface of the silicon-based active substance, and the silicon-based active substance includes silicon and a lithium silicate. The lithium-ion battery includes the anode material.
Claims20
An anode material comprising:
- a silicon-based active substance;
- and
- a coating layer located on at least a partial surface of the silicon-based active substance,
- wherein:
- the silicon-based active substance comprises silicon and a lithium silicate;
- as determined by an XRD ray diffraction method, in an X-ray diffraction spectrum of the anode material, a peak intensity of a strongest diffraction peak of the anode material in a 2θ range of 180 to 200 is A1, a peak intensity of a strongest diffraction peak in a 2θ range of 26° to 27.9° is A2, a peak intensity of a strongest diffraction peak in a 2θ range of 320 to 340 is A3, and A1+A2+A3 is equal to A;
- a peak intensity of a strongest diffraction peak of the anode material in a 2θ range of 160 to 170 is B1, a peak intensity of a strongest diffraction peak in a 2θ range of 220 to 25.9° is B2, a peak intensity of a strongest diffraction peak in a 2θ range of 360 to 380 is B3, and B1+B2+B3 is equal to B;
- a peak intensity of a strongest diffraction peak of the anode material in a 2θ range of 28° to 30° is C1, a peak intensity of a strongest diffraction peak in a 2θ range of 460 to 480 is C2, a peak intensity of a strongest diffraction peak in a 2θ range of 560 to 580 is C3, and C1+C2+C3 is equal to C;
- and
- a relationship between the A, the B, and the C simultaneously meets:
- 0<(A+B)/C≤10 and 0<(A+C)/B≤5.
8 more elements
Dependencies are inferred from the claim text.