Moisture-gradient-enhanced ionic thermoelectrics

. We attribute the enhanced performance to fast and selective ion transport driven by coupled heat and moisture transfer. As a proof of concept, this material enabled the development of wearables capable of monitoring motion and respiration, as well as robotic systems equipped with synchronous environmental and tactile sensing. This work holds promise in the design of high-sensitivity, multifunctional, and high-energy-density i-TEs, facilitating their applications in robotic touch and wearables.