MSE 2022
Keynote Lecture
28.09.2022 (CEST)
Design and manufacture of laser-structured electrodes for fast charging
DF

Donal Finegan (Ph.D.)

National Renewable Energy Laboratory

Finegan, D. (Speaker)¹
¹National Renewable Energy Laboratory
Vorschau
49 Min.

The Li-ion battery manufacturing industry has well established roll-to-roll processes that are unlikely to change for the foreseeable future. Consequently, solutions for enhancing the performance of cells need to be scalable to existing roll-to-roll infrastructure. Laser-ablation for microstructural tuning is one such technique that can be incorporated into existing infrastructure. By selectively removing material from electrodes, their effective tortuosity can be reduced, and their rate capability increased. However, there are concerns surrounding the impact of laser ablation on the material properties of the electrodes and on the expense of material removal, particularly at the cathode that consists of relatively expensive metal oxides. This presentation will focus on modelling to identify the optimal laser ablation conditions for fast charging Li-ion batteries as well as the practical implementation of laser ablation to battery electrodes. This presentation will also cover the impact of laser ablation on material properties of electrodes, the rate capability of laser-ablated cells, and the relative benefit gained by laser ablating only the anode compared to both the anode and cathode. 

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