The role of white carbon black in supercapacitors is mainly reflected in the following aspects:

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1. Improve the specific surface area and porosity of electrode materials
White carbon black has a very high specific surface area (up to 300-500 square meters/gram) and rich pore structure. This characteristic enables electrode materials to provide more active surface area, thereby increasing charge storage capacity and significantly improving the energy density of supercapacitors. In addition, its porous structure can promote electrolyte penetration and improve ion transport efficiency.

2. Enhance conductivity
White carbon black itself has excellent conductivity, which can effectively reduce the internal resistance of electrode materials and improve the conductivity of electrodes. In supercapacitors, this helps to reduce energy loss during charging and discharging processes and improve power density.

3. Improve the mechanical stability and cycle life of electrode materials
The high conductivity and excellent dispersibility of white carbon black can enhance the mechanical stability of electrode materials and reduce the polarization phenomenon of electrodes during charge and discharge processes. This helps to extend the lifespan of supercapacitors.

4. Improve the stability and ion conductivity of electrolytes
In addition to being used as an electrode material, white carbon black can also be used as an electrolyte additive. By adding white carbon black, the ion conductivity and stability of the electrolyte can be improved, thereby further enhancing the overall performance of supercapacitors.

5. Enhance electrochemical activity
The functional groups and defect structures on the surface of white carbon black can provide more active sites, which are conducive to the storage and release of charges, thereby enhancing the electrochemical activity of electrode materials.

6. Adjustable electrochemical performance
The specific surface area and pore structure of white carbon black can be controlled through the preparation process to optimize its electrochemical performance. For example, increasing pore structure can improve ion conductivity, while reducing pore structure can increase specific capacity.

summary
White carbon black has broad application prospects in supercapacitors due to its high specific surface area, excellent conductivity, and controllable pore structure. It can significantly improve the energy density, power density, and cycle life of capacitors, making it an ideal electrode material. With the continuous improvement of preparation processes, the potential application of white carbon black in the field of supercapacitors will be further released, providing important support for the development of high-performance energy storage technology.