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Harvesting waste heat energy by promoting H+-ion concentration difference with a fuel cell structure EI
期刊论文 | 2019 , 57 , 101-107 | Nano Energy
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Abstract :

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. © 2018 Elsevier Ltd

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Electrical energy Innovative approaches Ion concentrations Low-temperature regime Renewable energies Thermal conversion Thermo-Electric materials Thermoelectric conversion efficiency

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GB/T 7714 Liu, Yan , Chen, Yuanzhen , Ming, Jun et al. Harvesting waste heat energy by promoting H+-ion concentration difference with a fuel cell structure [J]. | Nano Energy , 2019 , 57 : 101-107 .
MLA Liu, Yan et al. "Harvesting waste heat energy by promoting H+-ion concentration difference with a fuel cell structure" . | Nano Energy 57 (2019) : 101-107 .
APA Liu, Yan , Chen, Yuanzhen , Ming, Jun , Chen, Li , Shu, Chengyong , Qu, Ting et al. Harvesting waste heat energy by promoting H+-ion concentration difference with a fuel cell structure . | Nano Energy , 2019 , 57 , 101-107 .
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