Fig. 5: Construction of quasi-solid-state ZTCCs using PAM based gel electrolyte and applications.

a Thermal charging curves under various temperature differences. b Fitted Seebeck coefficient. c Thermal-induced current density (hollow symbol) and power density (solid symbol). d Thermal stability with a loading resistance of 10 kΩ. e Digital photo of a white LED lighted by three ZTCCs in series. f Illustration for health monitoring system. g Body heat-charged health monitoring system and h the recorded data.