| 초록 |
Ionic thermoelectrics (iTEs) composed of ionic polymers are emerging as competitive candidates in terms of a high thermoelectric voltage generation compared to traditional thermoelectrics. Due to their high Seebeck coefficient, the iTE films show large thermovoltage that are enough to operate low-voltage driving electronics from a small thermal gradient between the environment and iTEs. Therefore, thermoresponsive ionic thermoelectric polymer films were synthesized from ionic monomers and hydrophobic nematic monomers with an ionic liquid via photopolymerization. The iTE film showed reversible thermoresponsiveness as well as fast transmittance switching at 65 °C. The iTE device showed a phase-controlled ionic Seebeck coefficient of −5.9 mV K−1 at 80% RH and a temperature gradient of 8.2 K. Taking advantage of the large thermoelectric voltage and high thermoresponsiveness, the LCI film was used to demonstrate a self-detectable and wireless fire alarm integrated with an electrochromic window or a light-emitting diode that can be used to detect temperature changes in the environment. |
