Single-sided carbon-coated aluminum foil is a breakthrough technological innovation that uses functional coatings to treat the surface of battery conductive substrates. Carbon-coated aluminum foil/copper foil is to uniformly and finely coat dispersed nano-conductive graphite and carbon-coated particles on aluminum foil/copper foil.
It can provide excellent electrostatic conductivity, collect the micro-current of the active material, thus greatly reducing the contact resistance between the positive/negative electrode material and the current collector, improve the adhesion between them, and reduce the amount of binder, thereby significantly improving the overall performance of the battery. There are two types of coatings: water-based (water-based systems) and oil-based (organic solvent-based systems). This type of coating is water-based and is commonly used as a current collector for cathode materials in lithium-ion batteries.
2.1 Significantly improve the consistency of battery pack usage and greatly reduce the cost of battery packs.
Significantly reduce the increase in the dynamic internal resistance of battery cells;
Improve the pressure difference consistency of the battery pack;
Extend battery life;
2.2 Improve the adhesion between the active material and the current collector, and reduce the manufacturing cost of the pole piece. for example:
Using an aqueous system to improve the adhesion between the cathode material and the collector;
Improve adhesion between nanoscale or submicron cathode materials and current collectors;
Improve the adhesion between lithium titanate or other high-capacity cathode materials and current collectors;
The qualified rate of pole piece manufacturing is improved, and the pole piece manufacturing cost is reduced.
2.3 Reduce polarization, increase the rate and gram capacity, and improve battery performance. for example:
Partially reduce the proportion of binder in the active substance and increase the gram capacity;
Improve electrical contact between the active material and current collector;
Reduce polarization and improve power performance.
2.4 Protect the current collector and prolong the battery life. for example:
Prevent current collector from corrosion and oxidation;
Improve the surface tension of the current collector and enhance the easy coating performance of the current collector;
Can replace the higher-cost etched foil or replace the original standard foil with a thinner foil.