Fig. 8: Performance of C-C/MnO2-based supercapacitor modules in series and parallel configurations.

a CV curves for 2–4 MSCs in series and parallel. b GCD curves for 2–4 MSCs in series and parallel. c Lighting a small bulb with 3 MSCs in series for the first 120 s. d Powering an hourly clock with 3 MSCs in series for the first 35 min. e Powering a smartwatch with 3 MSCs in series. f Powering an hourly clock with 3 MSCs in series worn on a lab coat.