Fig. 4: Electrochemical and microscopic characterizations of different positive electrode composites during charge-discharge process.
From: An active bifunctional natural dye for stable all-solid-state organic batteries

In situ EIS Nyquist plots and the corresponding DRT γ(τ) of (a) indigo|KB|LPSC; b SP|LPSC and c indigo|SP|LPSC positive electrode composites at 0.2 C rate at 25 °C. d, SEM images of indigo|KB|LPSC and indigo|SP|LPSC positive electrode composites before (pristine state) and after 1st charged. Source data for this figure are provided as a Source Data file.