Dry coating electrode technology is one of the advanced manufacturing technologies of semi-solid and solid state lithium ion battery and solid state supercapacitor, in which the dry roll pressing process is the key.  The continuous dry rolling process independently developed by our company only needs to form a dry electrode film with high density and uniform surface with evenly mixed electrode materials through multi-stage rolling, and then combine with current collector hot pressing to form an electrode sheet with dense structure and uniform thickness.
The difference between the dry process of electrode coating technology and  the traditional wet process of electrode coating technology is that the wet method requires the use of solvents. The process is to mix the negative and positive electrode material powder with the solvent, and then apply it to the metal current collector to dry. The dry method does not require a solvent, and the electrode material powder is directly pressed onto the metal current collector to form the electrode. The binder exists in the fiber state, and the contact between the activated carbon particles and the conductive particles is closer. Compared to the wet process, dry electrode manufacturing does not require a large plant footprint to dry the solvent, greatly reducing the capital and labor costs required by the plant, and is more environmentally friendly.
Features
Dry coating electrode tape refers to pre-fabricated electrode materials in the form of tapes or films that can be directly applied onto substrates without wet processing or solvent-based methods. Here are its features and benefits:
1. Direct Application: Dry coating electrode tape simplifies the manufacturing process by enabling direct and easy application onto any desired substrate, without needing complex wet processing steps like slurry preparation, drying and solvent evaporation.
2. Uniform Thickness: By employing dry coating technology, uniform thickness across an electrode tape can be ensured and result in improved electrode performance and overall product quality.
3. Improved Reproducibility: Dry coating electrode tape offers exceptional reproducibility from batch to batch, helping ensure consistent electrode properties and performance in electrode-based devices.
4. Controlled Composition: The dry coating process provides precise control of the ratios and compositions of active materials, binders, conductive additives and other components present in an electrode tape, which allows for customized performance optimization as well as customization for individual applications.
5. Improved Stability: Dry coating electrode tape shows greater stability compared to wet-coated electrodes due to its absence of solvents which decrease the risk of solvent evaporation, shrinking, or swelling which could otherwise adversely impact its structure and performance over time.
6. Accelerated production speeds: The use of dry coating electrode tape speeds up production cycles by eliminating time-consuming processes like solvent drying and curing.
7. Increased safety: By foregoing volatile solvents, dry coating reduces safety hazards associated with their handling, storage and disposal.
8. Versatility: Dry coating electrode tape can be used in a variety of electrode applications, such as lithium-ion batteries, supercapacitors, fuel cells and biosensors.
9. Superior Adhesion: Dry coating technology ensures superior adhesion between electrode tapes and various substrates, providing excellent contact while minimizing delamination or detachment risks during device operation.
10. Scalability: Dry coating electrode tape can easily be scaled up for mass production, making it an economical and efficient option for large-scale manufacturing processes.
Advantages
â—Ž Improve the surface tension and increase the adhesion Lithium-ion batteries for electric vehicles between the Al foil and the active material.
â—Ž Decrease the using amount of binder for the electrode, enhance energy density of the battery ,and lower the cost of the electrode production.
â—Ž Protect the Al current collector from surface corrosion and oxidation.
â—Ž Reduce interfacial resistance and internal resistance of the cell.
â—Ž Decrease polarization and improve the rate capability and specific capacity of the electrode material.
â—Ž Mitigate exothermal reactions and enhance the battery safety.
â—Ž Improve the production stability and reproducibility, and raise Lithium ion battery in water system the pass rate of the cell; Increase the consistency and cycling life of the cell and lower the cost of the production
