POS5-1170
Effects of Gel-Gel Interface Structure on Ion Transport in Bilayer Ionic Hydrogels
Topic
S5. Polymers for Electronics and Photonics
When and Where
Sep 29, 2026
08:30 - 09:30
Room 301 (Grand Ballroom)
Session Chairs
Hae Jung SON
Boseok KANG
Presenter(s)
Jihyun Nam (University of Seoul)
Co-Author(s)
Abstract
Hydrogels are polymer networks with high water content and flexibility, and have been widely utilized as key materials in various sensors and energy devices. In particular, ionic hydrogels have attracted attention as self-powered devices, as they can convert ion transport driven by ion concentration gradients into electrical signals. Previous studies have mainly focused on gel composition and ion gradient design, while the effect of the gel-gel interface on device performance in bilayer structures has not been reported. In this study, a bilayer structure based on ionic hydrogels was fabricated to investigate the ion transport characteristics induced by ion concentration gradients. The effects of ionic monomer content, electrolyte concentration, and gel-gel interface structure on the output characteristics of the device were analyzed. As a result, not only the ionic monomer content and electrolyte concentration but also the gel-gel interface structure were found to have a significant effect on the output characteristics of the device. The interface control strategy proposed in this study suggests a new direction for the design of high-performance, ion concentration gradient-based devices for self-powered sensors and wearable electronics.
