Yun, Tae Gwang Lee, Yejin Shin, Joonchul Lee, Dong Ho Hong, Min Taek Lee, Seonghun Kim, Sang-Joon Lee, Hyun Ji Lee, Jiwon Min, Gyeongrok Weon, Seunghyun Choi, Minho Jang, Ho Won Kim, Han Seul Jang, Ji-Soo 2026-03-27T05:00:20Z 2026-03-27T05:00:20Z 2026-03-24 2026-04 1754-5692 https://pubs.kist.re.kr/handle/201004/154496 Capturing greenhouse gases (GHGs) while generating electricity offers a new paradigm for climate mitigation. Here, we report a GHG-driven energy harvesting system, termed a gas capture and electricity generator (GCEG), that directly converts the adsorption of NOx and CO2 into electrical power. The device integrates a carbon black-coated mulberry paper electrode with an asymmetrically dip-coated polyacrylamide hydrogel, enabling selective gas adsorption and voltage generation via modulation of the electrical double layer. Upon exposure to 50 ppm NO2, the GCEG delivers 0.8 V and 55 µA, scaling to 3.8 V and 140 µA through series and parallel integration. Infrared spectroscopy and atomistic simulations reveal that hydrogen-bond-driven gas–hydrogel interactions govern the energy harvesting mechanism. By integrating gas capture and electricity generation within a single self-powered platform, this approach provides a scalable, low-energy pathway for mitigating multiple GHGs and offers a promising strategy toward carbon neutrality. English Royal Society of Chemistry Electrical power generation from asymmetric greenhouse gas capture Article 10.1039/d5ee06789h 1 Energy & Environmental Science, v.19, no.7, pp.2149 - 2160 Energy & Environmental Science 19 7 2149 2160 Y scie scopus 001704756500001 2-s2.0-105031697275 Chemistry, Multidisciplinary Energy & Fuels Engineering, Chemical Environmental Sciences Chemistry Energy & Fuels Engineering Environmental Sciences & Ecology Article KINETICS NO2 MECHANISM