The Polymer Society of Korea

Abstract

In this study, a series of p- and n-type polymeric ionic gels (PIGs) with different ratios of ionic side chains are synthesized to allow only single-type ions to pass through them. The results demonstrate that the repeatedly stretchable PIGs are transparent, thermally robust up to 125°C, and self-healing. Among the series of PIGs, p- and n-type PIGs with 75% ion moieties (P75 and N75) exhibit the optimum ionic conductivity (4.1 × 10⁻⁴ and 2.7 × 10⁻⁴ S cm⁻¹) and ionic Seebeck coefficients (Si ) (5.84, and -4.18 mV K⁻¹) under ambient conditions (25°C and relative humidity (RH) of 30%), resulting in ZTi values of 1.87 × 10⁻³ and 1.18 × 10⁻³. Accordingly, P(([EMIM+][SPA])_0.75-r-MA_0.25) (P75) and P(([APTA][TFSI−])_0.75-r-MA_0.25) (N75) are used to achieve stretchable ionic thermoelectric devices.