Moisture-gradient-enhanced ionic thermoelectrics.

ABSTRACT: Ionic thermoelectrics (i-TEs) demonstrate immense application potential in such fields as wearables and low-grade energy harvesting. Though adequate moisture absorption is required to facilitate ion dissociation in i-TEs, the impact of moisture gradient has been overlooked. Herein, we demonstrate a moisture-gradient-enhanced ionic thermoelectric generator (MGITG) driven by both moisture and temperature gradients. The MGITG exhibits an ionic thermopower of 34.02 mV K^-1, a high open-circuit voltage of 644.19 mV, and an ultrahigh 1 h output energy density of 917.54 J m^-2. 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

SUBMITTER: Zhao C 

PROVIDER: S-EPMC12700981 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature