An Ultra-Thin Wearable Thermoelectric Paster Based on Structured Organic Ion Gel Electrolyte

• All-solid-state organic ion gel electrolyte with superior thermal tolerance and environmental stability ensures excellent interfacial contact with electrodes. • Inspired by onion epidermal cells, the porous polymer skeleton-supported gel achieves a 900% enhancement in ZT via thermal expansion synergy. • The i-TE paster delivers a high Seebeck coefficient of 28 mV K−1 and 1.3% energy conversion efficiency, enabling self-sustainable wearable applications. • Demonstrates versatile applications including thermal energy storage, material recognition, temperature detection, and photothermoelectric conversion.