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Lithium ion battery negative electrode material and preparation method thereof
The invention relates to a lithium ion battery negative electrode material and a preparation method thereof. The lithium ion battery negative electrode material comprises a pyrolytic carbon-carbon fiber complex which is of a core-shell structure and is of a 5-12 micron scale, silicon-silicon carbide composite nanowires of a 400-600 nanometer scale, silicon powder of a 100-300 nanometer scale and carbon microspheres of a 20-60 nanometer scale, wherein the pyrolytic carbon-carbon fiber complex, the silicon-silicon carbide composite nanowires, the silicon powder and the carbon microspheres are mixed to form a three-dimensional tree structure. The lithium ion battery negative electrode material is of a three-dimensional tree structure formed by mixing the pyrolytic carbon-carbon fiber complexwhich is of a core-shell structure and is of a 5-12 micron scale, the silicon-silicon carbide composite nanowires of a 400-600 nanometer scale, the silicon powder of a 100-300 nanometer scale and thecarbon microspheres of a 20-60 nanometer scale, so that the combination degree of the components can be improved, and the specific capacity and the stability of the lithium ion battery negative electrode material can be further improved.
本发明涉及一种锂离子电池负极材料及其制备方法，包括5‑12微米尺度且为核壳结构的热解碳‑碳纤维复合体、400‑600纳米尺度的硅‑碳化硅复合纳米线、100‑300纳米尺度的硅粉、20‑60纳米尺度的碳微球；所述热解碳‑碳纤维复合体、所述硅‑碳化硅复合纳米线、所述硅粉以及所述碳微球通过混合形成三维树状结构。该锂离子电池负极材料通过5‑12微米尺度且为核壳结构的热解碳‑碳纤维复合体、400‑600纳米尺度的硅‑碳化硅复合纳米线、100‑300纳米尺度的硅粉、20‑60纳米尺度的碳微球混合形成三维树状结构，从而可提高各组分之间的结合度，进而可提高该锂离子电池负极材料的比容量和稳定性。
Lithium ion battery negative electrode material and preparation method thereof
The invention relates to a lithium ion battery negative electrode material and a preparation method thereof. The lithium ion battery negative electrode material comprises a pyrolytic carbon-carbon fiber complex which is of a core-shell structure and is of a 5-12 micron scale, silicon-silicon carbide composite nanowires of a 400-600 nanometer scale, silicon powder of a 100-300 nanometer scale and carbon microspheres of a 20-60 nanometer scale, wherein the pyrolytic carbon-carbon fiber complex, the silicon-silicon carbide composite nanowires, the silicon powder and the carbon microspheres are mixed to form a three-dimensional tree structure. The lithium ion battery negative electrode material is of a three-dimensional tree structure formed by mixing the pyrolytic carbon-carbon fiber complexwhich is of a core-shell structure and is of a 5-12 micron scale, the silicon-silicon carbide composite nanowires of a 400-600 nanometer scale, the silicon powder of a 100-300 nanometer scale and thecarbon microspheres of a 20-60 nanometer scale, so that the combination degree of the components can be improved, and the specific capacity and the stability of the lithium ion battery negative electrode material can be further improved.
本发明涉及一种锂离子电池负极材料及其制备方法，包括5‑12微米尺度且为核壳结构的热解碳‑碳纤维复合体、400‑600纳米尺度的硅‑碳化硅复合纳米线、100‑300纳米尺度的硅粉、20‑60纳米尺度的碳微球；所述热解碳‑碳纤维复合体、所述硅‑碳化硅复合纳米线、所述硅粉以及所述碳微球通过混合形成三维树状结构。该锂离子电池负极材料通过5‑12微米尺度且为核壳结构的热解碳‑碳纤维复合体、400‑600纳米尺度的硅‑碳化硅复合纳米线、100‑300纳米尺度的硅粉、20‑60纳米尺度的碳微球混合形成三维树状结构，从而可提高各组分之间的结合度，进而可提高该锂离子电池负极材料的比容量和稳定性。
Lithium ion battery negative electrode material and preparation method thereof
一种锂离子电池负极材料及其制备方法
WANG WEN (author) / ZHANG XIANGTONG (author) / SHENG HONGCHAO (author) / WANG YONG (author) / LING JIAN (author) / LONG ZHAOQIAN (author)
2020-09-15
Patent
Electronic Resource
Chinese
IPC:
H01M
Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie
,
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
/
B82Y
Bestimmter Gebrauch oder bestimmte Anwendung von Nanostrukturen
,
SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
/
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
/
C04B
Kalk
,
LIME
Lithium battery negative electrode material and preparation method thereof
| European Patent Office | 2021
| European Patent Office | 2021
| European Patent Office | 2020
| European Patent Office | 2021
| European Patent Office | 2021