Supplementary information to the publication “Influence of a pyrolysis at different temperatures on the mechanical recycling efficiency of Li-ion batteries” This supplementary information contains 6 excel files with data and 1 pdf file with photographs. The content of the files is explained below: “1 - TGA analysis of cell components” contains the data behind Figure 2. “2 - Mass loss during thermal treatment” contains the data behind Figure 3. “3 - Particle size distribution and black mass yield” contains the data behind Figure 4. “4 - Particle size distribution of black mass” contains the data behind Figure 5. In addition, it contains the corresponding density distributions and the laser diffraction analysis of the fraction smaller 100 µm. “5 - Black mass composition and element recoveries” contains the data behind Figures 7 and 8. In addition, it contains the content and recovery rates of further elements. “6 - Settling velocity distributions and product composition” contains the data behind Figures 9 and 10. In addition, it contains the corresponding cumulative distributions and the distributions of the temperatures not shown in Figure 9. “7 - Materials after manual sorting” contains photos of anode, cathode, separator/plastics, casing and compounds after manual sorting at different settling velocity classes.