Fig. 7. Electrochemical performance of the 3 cm long FFSC using a gel electrolyte of PVA–H3PO4; (a) schematic representation of the FFSC; (b) CV curves measured at different scan rates; (c) GCD curves tested at different current densities; (d) electrochemical performance of the FFSCs arranged in series or in parallel; and (e) cyclic life test of the FFSC at a scan rate of 100 mV s−1 for 10 000 cycles.
