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Method for rapidly preparing graphite negative electrode of lithium ion battery
The invention relates to a method for rapidly preparing a graphite negative electrode of a lithium ion battery. The preparation method comprises the following steps: mixing and refining a carbon source precursor, pressing the carbon source precursor into a block, and carrying out gradient pre-oxidation treatment and subsequent rapid graphitization treatment on the precursor to finally obtain the artificial graphite negative electrode material. The heating rate and the cooling rate of the preparation method are far higher than those of a traditional graphitization furnace, so that the preparation time is shortened to dozens of seconds, the time cost and the energy cost are greatly reduced, the production efficiency is greatly improved, and the preparation method is particularly suitable for large-scale industrial production. The artificial graphite negative electrode material prepared by the method has relatively good electrochemical performance and high first charge-discharge specific capacity, and has a wide application prospect in the field of lithium ion batteries.
本发明涉及一种快速制备锂离子电池石墨负极的方法。通过对碳源前驱体混合、细化，并将其压制成块体，再对前驱体进行梯度预氧化处理和随后的快速石墨化处理，最终得到人造石墨负极材料。由于该制备方法的升温速率和降温速率都远远高于传统石墨化炉的升温速率和降温速率，将制备时间缩短至几十秒，时间成本和能源成本都得到了大幅度的减少，生产效率极大地提高，特别适合大规模工业化生产。本发明制备的人造石墨负极材料具有较好的电化学性能，首次充放电比容量高，在锂离子电池领域应用前景广阔。
Method for rapidly preparing graphite negative electrode of lithium ion battery
The invention relates to a method for rapidly preparing a graphite negative electrode of a lithium ion battery. The preparation method comprises the following steps: mixing and refining a carbon source precursor, pressing the carbon source precursor into a block, and carrying out gradient pre-oxidation treatment and subsequent rapid graphitization treatment on the precursor to finally obtain the artificial graphite negative electrode material. The heating rate and the cooling rate of the preparation method are far higher than those of a traditional graphitization furnace, so that the preparation time is shortened to dozens of seconds, the time cost and the energy cost are greatly reduced, the production efficiency is greatly improved, and the preparation method is particularly suitable for large-scale industrial production. The artificial graphite negative electrode material prepared by the method has relatively good electrochemical performance and high first charge-discharge specific capacity, and has a wide application prospect in the field of lithium ion batteries.
本发明涉及一种快速制备锂离子电池石墨负极的方法。通过对碳源前驱体混合、细化，并将其压制成块体，再对前驱体进行梯度预氧化处理和随后的快速石墨化处理，最终得到人造石墨负极材料。由于该制备方法的升温速率和降温速率都远远高于传统石墨化炉的升温速率和降温速率，将制备时间缩短至几十秒，时间成本和能源成本都得到了大幅度的减少，生产效率极大地提高，特别适合大规模工业化生产。本发明制备的人造石墨负极材料具有较好的电化学性能，首次充放电比容量高，在锂离子电池领域应用前景广阔。
Method for rapidly preparing graphite negative electrode of lithium ion battery
一种快速制备锂离子电池石墨负极的方法
2023-09-19
Patent
Electronic Resource
Chinese
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