Polarization voltage, calculated from average charge minus average discharge voltage of the respective cycle. Boxes inside the violin diagrams show the IQR, whiskers extend to 1.5 times of IQR. The number n of ASSB cells considered for the analysis is shown above each violin plot. All violin plots are prepared with Kernel density estimation. The triangles show the LIB coin cell data of three coin cells used to benchmark the NMC 622 active material, the error bars show their standard deviation (SD). Details on the preparation of these coin cells is provided in Methods.
