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- Title
Enhancing hydrovoltaic power generation through heat conduction effects.
- Authors
Li, Lianhui; Feng, Sijia; Bai, Yuanyuan; Yang, Xianqing; Liu, Mengyuan; Hao, Mingming; Wang, Shuqi; Wu, Yue; Sun, Fuqin; Liu, Zheng; Zhang, Ting
- Abstract
Restricted ambient temperature and slow heat replenishment in the phase transition of water molecules severely limit the performance of the evaporation-induced hydrovoltaic generators. Here we demonstrate a heat conduction effect enhanced hydrovoltaic power generator by integrating a flexible ionic thermoelectric gelatin material with a porous dual-size Al2O3 hydrovoltaic generator. In the hybrid heat conduction effect enhanced hydrovoltaic power generator, the ionic thermoelectric gelatin material can effectively improve the heat conduction between hydrovoltaic generator and near environment, thus increasing the water evaporation rate to improve the output voltage. Synergistically, hydrovoltaic generator part with continuous water evaporation can induce a constant temperature difference for the thermoelectric generator. Moreover, the system can efficiently achieve solar-to-thermal conversion to raise the temperature difference, accompanied by a stable open circuit voltage of 6.4 V for the hydrovoltaic generator module, the highest value yet. The authors demonstrate enhanced hydrovoltaic power generation using heat conduction effects to break through the slow heat replenishment limit common in evaporation-induced hydrovoltaic generators.
- Subjects
HEAT conduction; THERMOELECTRIC generators; OPEN-circuit voltage; THERMOELECTRIC materials; POROUS materials
- Publication
Nature Communications, 2022, Vol 13, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-022-28689-8