Luminescence Spectroscopy of Mechanically Processed Lithium-Ion Battery Cells

Typical battery materials of lithium-ion battery cells were investigated regarding their optical and spectroscopic characteristics which could be beneficial for a spectroscopy-based recognition and sorting approach. Several plastic components, including the separator foil, exhibited luminescence in the visible spectral region after excitation by ultraviolet light. It has been shown that this behavior can be used to increase the prediction accuracy of those materials for a Mask R-CNN model. That may allow a reliable recognition using a basic RGB-camera setup for a mechanical separation process.