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Nanoscale negative electrode materials

Nanoscale negative electrode materials can add smaller materials to traditional negative electrode materials, greatly improving the charging and discharging capacity and number of charging and discharging times of lithium-ion batteries.

What are the characteristics of negative electrode materials for lithium-ion batteries? What are the characteristics of negative electrode materials for lithium-ion batteries? Negative electrode materials have a significant impact on the initial efficiency and cycling performance of lithium-ion batteries, and their performance directly affects the performance of lithium-ion batteries. Negative electrode materials account for about 5-15% of the total cost of lithium-ion batteries. Lithium ion battery negative electrode materials generally include amorphous carbon materials, graphitized carbon materials, silicon-based materials, nitrides, new alloys, etc. There are various types of negative electrode materials for lithium-ion batteries, but there are still very few that can ultimately be selected as the constituent materials for mass production of lithium-ion batteries.

The negative electrode of lithium-ion batteries is made by mixing the negative electrode active material carbon or non carbon materials, adhesives, and additives to form a paste like adhesive that is evenly applied on both sides of the copper foil, and then dried and rolled. The key to the successful production of lithium-ion batteries lies in the preparation of negative electrode materials that can reversibly remove/insert lithium ions.

The negative electrode material is the main body for storing lithium in lithium-ion batteries, enabling the insertion and extraction of lithium ions during the charging and discharging process. When a lithium-ion battery is charged, the lithium atoms in the positive electrode ionize into lithium ions and electrons, and the lithium ions move towards the negative electrode and combine with electrons to form lithium atoms. During discharge, lithium atoms ionize from the negative electrode surface of graphite crystals into lithium ions and electrons, and synthesize lithium atoms at the positive electrode.

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