POS6-0735
Natural polymer-based Aerogels for Moisture-Electric Energy Generation
When and Where
Nov 30, -0001
12:00am - 12:00am
Presenter(s)
Eunae Shin (Korea Institute of Industrial Technology (KITECH))
Co-Author(s)
Abstract
Moisture-electric energy generation (MEG) provides a promising approach for harvesting electrical energy from ambient moisture through water–solid interactions. Among various materials for MEGs, natural polymer has attracted attention due to its abundant hydrophilic functional groups, inherent sustainability, and excellent structural tunability. In this study, natural polymer-based aerogels incorporated with carbon nanotubes (CNTs) were prepared to investigate the effect of natural polymer composition on the output performance of moisture-electric generators. Cellulose nanofiber (CNF), collagen, sodium alginate, hyaluronic acid, gelatin, and polydopamine were used as natural polymer matrices, while CNTs were introduced as conductive fillers to enhance charge transport and collection. CNTs were dispersed in an aqueous solution using the respective natural polymers, and subsequently fabricated into aerogels via freeze-drying. The fabricated aerogels were combined with polyacrylamide (PAM) organohydrogels to construct MEG devices, and their voltage, current, and power density were evaluated under ambient moisture conditions. Among the natural polymer compositions, the collagen-based device exhibited the highest output performance, with an output voltage of 0.48 V, a current of 700 μA, and a power density of 336 μW cm⁻². These results indicate that the choice of natural polymer strongly influences MEG performance.
