Figure 4. Working Principle and thermoelectrochemical performance of ionogel. a) Schematic diagram of the operation of an ionogel thermoelectric generator based on the ion thermoelectric effect. b) Seebeck coefficients for various types of ionic liquids and ionogel with different loading. c) Thermal conductivity and thermoelectric figure of merit of thermoelectric ionogel. d) Variation of output voltage and current with external resistance. e) Graph of output power with external resistance. f) Cyclic thermoelectric responsiveness during ionogel heating / cooling cycles. g) Thermoelectric ionogel I-V curve.