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typically slightly better than that of the SEM, the morphological information which can be extracted out of the images is roughly similar. However, AFM imaging takes considerably more time and also, conducting and insulating areas cannot be told apart easily. Therefore, AFM was no longer used after the initial testing, which confirmed that the SEM images look very similar to the actual structure as detected by AFM. • Three electrode cell measurements: A Swagelok-type three-electrode cell was used to obtain impedance spectra and discharge curves relative to a Li refer- ence potential. Besides technical complications, this approach was not pursued further because this cell is quite different from the coin cell in many respects. Therefore, an interpretation of the results requires many additional assumptions which are difficult to verify. • Spraying electrodes: Spraying can be superior to doctor blading in many re- spects, especially for smaller batch sizes. Initial tests of spraying carbon sus- pensions outside of the glovebox with a hand-operated nozzle worked out quite well. To match and surpass the performance of doctor blading, however, an automated spraying setup would have had to be installed inside the glovebox, which was not feasible for time, cost, and glovebox space reasons. 33PDF Image | Lithium-Sulfur Battery: Design, Characterization, and Physically-based Modeling
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