Fig. 4: Electrochemcial characterization of MIMSCs with 72 serially-connected microcells. | Nature Communications

Fig. 4: Electrochemcial characterization of MIMSCs with 72 serially-connected microcells.

From: Monolithically integrated micro-supercapacitors with high areal number density produced by surface adhesive-directed electrolyte assembly

Fig. 4

a Photograph. b, c 3D thickness mapping of four selected MSCs (b) and height profiles of randomly selected MSCs (c) at different locations in MIMSCs model. d Capacitance obtained at 1 μA of each MSC unit within the MIMSCs. e Total voltage/capacitance response versus cell number of MIMSCs containing 8, 16, 24, 32, 40, 56, and 72 serially-connected microcells, the capacitance was calculated from GCD profiles measured at 2 μA. f, g GCD profiles obtained at currents of 0.2–5 μA (f) and long-term cycling stability (g) of 72 serially-connected microcells under 190 V. Inset in (g) shows the initial and last 3 GCD profiles during the 9000-cycle run. h Areal cell number and areal output voltage of our MIMSCs compared with previous reports5,6,13,14,27,33. Source data are provided as a Source Data file.

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