APRIL 29,2024

High-speed Slot-Die Coating of Li-ion Battery Electrode Primers

2024-04-29 08:40

A recent research proves that a prediction model for the coating window in high-speed slot die coating with vacuum box is valid for the investigated material systems and coating gap widths over the investigated range of coating speeds up to 500 m/min.

AdobeStock_502590469-scaled-805x0-c-default.jpeg

Researchers found that knowing and predicting the coating window of thinnest wet film thicknesses is crucial to design the production process. Source: StockPhotoPro - Adobe.Stock


In the battery industry, very thin primer layers are used to improve electrode adhesion on substrates or act as blocker layers to prevent corrosion in case of aqueous cathodes. For these material configurations, high-speed coating is mandatory to ensure the economic viability of the process. One way to realize high-speed coating is a set-up including a slot die and a vacuum box to stabilize the coating bead. Knowledge and prediction of the coating window of thin wet film thicknesses is crucial to design the production process. Therefore, the influence of coating gap and viscosity of shear-thinning fluids on the coating window is investigated with the help of various model fluids.


In addition, a prediction model for the calculation of the coating window for high-speed slot-die coating with vacuum box is developed. This model is shown to be valid for the prediction of the coating window for the investigated material systems and coating gaps over the investigated range of coating speeds up to 500 m min？1. For a material system, which corresponds to a real material system for adhesive primer coatings, it is possible to reach a target wet film thickness of 20–25 μm. This would correspond to a layer thickness of 0.5 μm for a solid content of 2–2.5 wt%.


Disclaimer：The Institute of Plastic Research makes every effort to ensure the accuracy of the information, reliability of the data, and objectivity and fairness of the content and viewpoints described herein. However, we do not guarantee the accuracy and completeness of the information. Any losses or legal consequences resulting from actions taken based on this information are the sole responsibility of the individual undertaking them.

Media Contact

Luke
Head of Info Center

Release product requirements

Product Description：
Quantity：
Mailbox：
Contact Name：
Address：
Company Name：
Telephone No.：
Message：

0/2000

  • Email：info@ibuychem.com
  • Address：
    (China) Floor 19,Dongshan Ziyuan Building,745 Eastern Dongfeng Rd, Yuexiu District, Guangzhou
    (Saudi Arabia) Office 20,Al musa center,Olaya Street,Riyadh,Saudi arabia
    (Warehouse display center) 7663 Ibn Majah, 2324, As Sulay, Riyadh, Saudi Arabia
    (Thailand) 168 Samanea Plaza Thailand Building, Room No. C060, Moo 7, Bang Sao Thong Subdistrict, Bang Sao Thong District Samut Prakan Province 10570
Back To Top
Privacy Policy