Single-walled carbon nanotube conductive paste

With the advancement of related technologies of single-walled carbon nanotube conductive paste, the following reasons will promote the rapid growth of the single-walled carbon nanotube conductive paste market in the future:...

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With the advancement of related technologies of single-walled carbon nanotube conductive paste, the following reasons will promote the rapid growth of the single-walled carbon nanotube conductive paste market in the future:

1) Excellent performance of single-walled carbon nanotube conductive paste. Single-walled carbon nanotubes have high specific surface area, extremely fine tube diameter and ultra-long tube length, better graphitization degree and other physical and chemical characteristics, which make them have many excellent properties that multi-walled carbon nanotubes do not have, and the conductivity efficiency is more than ten times that of multi-walled carbon nanotubes. Single-walled carbon nanotubes can be used in both positive and negative electrode materials of lithium batteries, greatly improving the energy density, rate performance, safety, cycle life and other performance of lithium batteries;

2) "Fast charging" is the development trend of the new energy vehicle industry, and single-walled carbon nanotubes can improve the rate performance of lithium batteries better than multi-walled carbon nanotubes and traditional conductive agents. At present, many companies will choose to add single-arm and multi-arm matching methods for batteries above 3C. On this basis, 4C batteries will add 2% to 4% of single-walled carbon nanotubes separately to improve fast charging performance.

3) "Silicon-based" negative electrodes are more suitable for single-walled carbon nanotubes. Silicon-based negative electrode materials themselves are not good conductors. As negative electrode materials, they must use a large amount of conductive agents, and high-end conductive agents such as single-walled carbon nanotubes can improve their conductivity. At the same time, the high mechanical strength of single-walled carbon nanotubes can improve the stability of the structure of silicon-carbon negative electrode materials, and the structure is not easily destroyed under the action of external forces. In addition, the particle pulverization caused by the volume change of silicon-carbon negative electrode materials during the charge and discharge cycle will lead to rapid capacity decay. Single-walled carbon nanotubes, as excellent one-dimensional conductive materials, can more effectively help build a long-range conductive network, greatly improve its cycle performance, and increase the service life of the battery.

4) "Large cylindrical" batteries and "solid-state batteries" will gradually increase in volume in the next few years, increasing the use of silicon-based negative electrodes, thereby promoting the growth of the single-walled carbon nanotube industry;

5) Currently, the production cost and price of single-walled carbon nanotube conductive paste are too high due to high technical barriers and high production difficulty. However, as the single-walled carbon nanotube process technology gradually matures, the unit production efficiency and process automation degree are further optimized, thus bringing about economies of scale. In the future, the price of single-walled carbon nanotube conductive paste will gradually decrease, which will be conducive to the use of carbon nanotube conductive paste.

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