Harvesting waste heat energy by promoting H+-ion concentration difference with a fuel cell structure
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发布时间：2025-04-30
发布时间：2025-04-30
论文名称：Harvesting waste heat energy by promoting H+-ion concentration difference with a fuel cell structure
发表刊物：Nano Energy
摘要：Energy consumption continues to rise as society develops worldwide. Meanwhile, a lot of energy is wasted in the form of heat from various devices and systems. Here we report a new power generator, which works based on a difference in H+-ion concentration in a fuel cell structure and produces electricity by harvesting waste heat. The device works via the following three successive processes: H2 is oxidized at anode to H+ ions, the H+ ions then penetrate through a phosphoric acid-treated polybenzimidazole (PBI-PA) membrane and finally the H+ ions get reduced to H2 at cathode with electrons coming through external circuit from the anode. This system generates electricity at a current density of 21 mA cm−2 and a power density of 1.03 mW cm−2 at 170 °C. The cell's thermoelectric conversion efficiency at 170 °C is 13.72%, which is higher than typical values reported for many common thermoelectric materials in low temperature regimes. This innovative approach may allow for efficient generation of electricity from waste heat.
合写作者：Liu, Yan Chen, Yuanzhen Ming, Jun Chen, Li Shu, Chengyong Qu, Ting Tan, Qiang Li
是否译文：否
发表时间：2019-03-01
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