About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
|
Energy Materials for Sustainable Development
|
Presentation Title |
Dry Laser Processing of Battery Cathode Films |
Author(s) |
Yiran Xiao, Erika Ramos Guzman, Robert Kim, Marissa Wood, Emery Brown, Hui Du, Jianchao Ye |
On-Site Speaker (Planned) |
Jianchao Ye |
Abstract Scope |
The growth of the electric vehicle market is slowing down due to a lack of affordable lithium ion batteries. Transition from wet processing of battery electrodes to dry processing is anticipated to reduce the capital investment, energy consumption, and environmental impact. Here, we report a laser processing approach to fabricate cathode films. A NMC/PVDF/CB powder mixture is electrostatically sprayed onto Al foil. Laser is then applied onto the areas to selectively sinter the powders onto Al foil. Unsintered powders are collected for second use. This approach reduces energy consumption and material waste. The resulted electrodes show excellent battery cycling performance. In this talk, I will discuss processing parameters and how they affect the uniformity of the film, the adhesion to current collector, the composition change, and finally the battery performance. |