How to choose the appropriate carbon powder to optimize the performance of electrode paste?
Choosing the appropriate carbon powder is crucial for optimizing the performance of electrode paste. Carbon powder is one of the main components of electrode paste, and its properties directly affect the conductivity, adhesion, fluidity, and sintering performance of electrode paste. The following are some factors to consider when choosing toner:
Types of toner
Carbon powder mainly includes graphite powder, activated carbon powder, carbon black, and other types. Different carbon powders have different effects on the performance of electrode paste due to their different structures and properties. For example, graphite powder has good conductivity and high temperature resistance, while activated carbon powder has a higher specific surface area and adsorption capacity.
Purity of toner
The higher the purity of carbon powder, the better the conductivity and sintering performance of the electrode paste. The presence of impurities may reduce the performance of electrode paste, so it is necessary to choose high-purity carbon powder.
Particle size and distribution of carbon powder
The particle size and distribution of carbon powder directly affect the fluidity, viscosity, and sintering density of electrode paste. Generally speaking, carbon powder with smaller particle size and uniform distribution can make the electrode paste more delicate, have better fluidity, and result in higher electrode density after sintering.
The shape and surface treatment of toner
The shape of carbon powder (such as spherical, flake, needle shaped, etc.) and surface treatment (such as oxidation, reduction, surfactant treatment, etc.) can also affect the performance of electrode paste. For example, spherical carbon powder is beneficial for improving the fluidity and sintering density of electrode paste, while carbon powder treated with surfactants can improve the adhesion and conductivity of electrode paste.
The price and supply stability of toner
In addition to considering the performance of toner, price and supply stability are also important factors to consider when choosing toner. Choosing carbon powder with high cost-effectiveness and stable supply, while meeting performance requirements, is beneficial for reducing production costs and ensuring production continuity.
