High-energy-density and high-power-density negative electrode material for lithium ion battery and preparation method
The invention provides a high-energy-density and high-power-density negative electrode material for a lithium ion battery; the negative electrode material is of a kiwi fruit structure, wherein the kiwi fruit core is a soft carbon substrate, and kiwi fruit seeds are nano silicon materials uniformly d...
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Main Authors | , , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
14.05.2019
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Subjects | |
Online Access | Get full text |
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Summary: | The invention provides a high-energy-density and high-power-density negative electrode material for a lithium ion battery; the negative electrode material is of a kiwi fruit structure, wherein the kiwi fruit core is a soft carbon substrate, and kiwi fruit seeds are nano silicon materials uniformly dispersed on the surface of the soft carbon substrate; the fruit pulp of the kiwi fruit is carbon nano tubes uniformly dispersed on the surface of the soft carbon substrate and the surface of nano silicon; and the kiwi fruit outer skin is a conductive carbon coating layer. Meanwhile, the invention provides a preparation method of the negative electrode material. The composite negative electrode material prepared by the preparation method disclosed by the invention has a synergistic effect, and the problems of low-compaction density of soft carbon and the circulation expansion of silicon can be effectively overcome.
本发明提供了一种锂离子电池用高能量密度与高功率密度负极材料,所述负极材料为"猕猴桃"结构,所述"猕猴桃"芯为软碳基体,所述"猕猴桃"籽为均匀分散在软碳基体表面的纳米硅材料,所述"猕猴桃"果肉为均匀分散在软 |
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Bibliography: | Application Number: CN201811648096 |