Anode material for lithium-ion battery and preparation method of anode material
A technology of lithium-ion batteries and negative electrode materials, applied in battery electrodes, nanotechnology for materials and surface science, circuits, etc., can solve problems such as poor rate performance, poor structural stability, unsuitable preparation process, etc. Low cost, sufficient raw materials, good ion/electronic conduction effect
Inactive Publication Date: 2015-04-29
SOUTH CHINA UNIV OF TECH
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The invention discloses an anode material for a lithium-ion battery and a preparation method of the anode material. The material is structurally characterized by adopting a core-shell structure and comprises an active and stable core formed by uniformly dispersing submicron-grade multi-scale tungsten carbide particles in an amorphous silicon substrate and a highly-conductive shell coated with a thin-layer graphene sheet formed by stripping. The preparation method is a two-step ball-milling method, during ball milling in the first step, the tungsten carbide particles can fully play a milling assisting role to efficiently refine original coarse silicon; during ball milling in the second step, the graphene sheet formed by stripping ordinary graphite can stabilize the structure and improve the electrical conductivity. Therefore, the prepared anode material for the lithium-ion battery has the advantages of stable structure, good cycle performance, excellent rate performance and the like.
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Property | Measurement | Unit |
Size | 10.0 ~ 200.0 | nm |
Thickness | 5.0 ~ 12.0 | nm |
Granularity | 325.0 | mesh |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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Classification and recommendation of technical efficacy words
- Low price
- Sufficient raw materials