Negative electrode material, preparation method thereof, and all-solid-state lithium battery
AssigneeBYD Company Limited
InventorsBiao LI, Zizhu GUO, Tong ZHANG, Zhuo SHI
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Abstract
The present disclosure provides a negative electrode material, a preparation method thereof, and an all-solid-state lithium battery. The negative electrode material includes a core and an amorphous lithium-silicon alloy layer cladding the core. The core includes a glassy solid electrolyte and amorphous lithium-silicon alloy particles dispersed in the glassy solid electrolyte. The material of the amorphous lithium-silicon alloy particles is LixSi, 0<x≤4.4. The material of the amorphous lithium-silicon alloy layer is LiySi, 0<y≤4.4.
Claims20
A negative electrode material comprising a core and an amorphous lithium-silicon alloy layer cladding the core, the core comprising a glassy solid electrolyte and amorphous lithium-silicon alloy particles dispersed in the glassy solid electrolyte, the material of the amorphous lithium-silicon alloy particles is LixSi, 0<x≤4.4, and the material of the amorphous lithium-silicon alloy layer is LiySi, 0<y≤4.4.
A method for preparing a negative electrode material, comprising:
- dispersing amorphous LixSi particles in a glassy solid electrolyte to obtain a core, 0<x≤4.4;
- cladding the core with amorphous LiySi to obtain the negative electrode material, 0<y≤4.4.
Dependencies are inferred from the claim text.