Waste Heat Energy Harvesting by use of BaTiO3 for Pyroelectric Hydrogen Generation

Belitz, R.; Meisner, P.; Coeler, M.; Wunderwald, U.; Friedrich, J.; Zosel, J.; Schelter, M.; Jachalke, S.; Mehner, E.

doi:10.1515/energyo.0023.00081

Cited by 2 publications

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“…Initial experimental effort to demonstrate this process used pyroelectrics as an external charge source to generate a potential difference for water splitting (Zhang et al, 2019;Xie et al, 2017). However, recent work has shown that it is possible to generate hydrogen by simply placing ferroelectric particles in direct contact with water and subjecting them to cyclic heating and cooling (Belitz et al, 2017;Xu et al, 2018b;You et al, 2018a). As a model ferroelectric material, barium titanate has often been explored for tribo- (Li et al, 2019), piezo- (Belitz et al, 2017;Feng et al, 2019;Hong et al, 2010, ll OPEN ACCESS 2012;Jin et al, 2019;Pan et al, 2019;Wu et al, 2018a), and pyroelectric catalysis (Benke et al, 2015;Xia et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…However, recent work has shown that it is possible to generate hydrogen by simply placing ferroelectric particles in direct contact with water and subjecting them to cyclic heating and cooling (Belitz et al, 2017;Xu et al, 2018b;You et al, 2018a). As a model ferroelectric material, barium titanate has often been explored for tribo- (Li et al, 2019), piezo- (Belitz et al, 2017;Feng et al, 2019;Hong et al, 2010, ll OPEN ACCESS 2012;Jin et al, 2019;Pan et al, 2019;Wu et al, 2018a), and pyroelectric catalysis (Benke et al, 2015;Xia et al, 2017). This is primarily due to its lead-free nature, low-cost, and ease of manufacture in a wide variety of forms, such as nanofibers (Wu et al, 2018a;Xia et al, 2017), composites (Min et al, 2018), and particles (Belitz et al, 2017), which can be decorated with semiconductors to enhance catalytic performance.…”

Section: Introductionmentioning

confidence: 99%

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Demonstration of Enhanced Piezo-Catalysis for Hydrogen Generation and Water Treatment at the Ferroelectric Curie Temperature

et al. 2020

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Hydrogen can contribute significantly to the energy mix of the near future, as it is an attractive replacement for fossil fuels due to its high energy density and low greenhouse gas emission. A fascinating approach is to use the polarization change of a ferroelectric due to an applied stress or temperature change to achieve piezo-or pyro-catalysis for both H 2 generation and wastewater treatment. We exploit low Curie temperature (T c ) ferroelectrics for polarization-driven electrochemical reactions, where the large changes in polarization and high activity of a ferroelectric near its T c provides a novel avenue for such materials. We present experimental evidence for enhanced water splitting and rhodamine B degradation via piezo-catalysis by ultrasonic excitation at its T c . Such work provides an effective strategy for water splitting/treatment systems that employ low T c ferroelectrics under the action of mechanical stress or/and thermal fluctuations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Demonstration of Enhanced Piezo-Catalysis for Hydrogen Generation and Water Treatment at the Ferroelectric Curie Temperature

et al. 2020

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“…Xie et al reported the coupling between pyroelectric effect and electrochemical process and observed its water-splitting effect driven by these pyroelectric charges 20 . Belitz et al investigated the BaTiO 3 microcrystalline powders for pyro-driven hydrogen generation 21 . Kakekhani et al theoretically studied the pyroelectrically induced water splitting using density functional theory 22 – 25 .…”

Section: Introductionmentioning

confidence: 99%

Room-temperature pyro-catalytic hydrogen generation of 2D few-layer black phosphorene under cold-hot alternation

et al. 2018

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Many 2D few-layer materials show piezoelectric or pyroelectric effects due to the loss-of-inversion symmetry induced by broken structure, although they are not piezoelectric or pyroelectric in the bulk. In this work, we find that the puckered graphene-like 2D few-layer black phosphorene is pyroelectric and shows a pyro-catalytic effect, where the pyroelectric charges generated under ambient cold–hot alternation are utilized for hydrogen evolution and dye molecule decomposition. Under thermal cycling between 15 °C and 65 °C, the 2D few-layer black phosphorene shows a direct hydrogen generation of about 540 μmol per gram of catalyst after 24 thermal cycles and about 99% decomposition of Rhodamine B dye after 5 thermal cycles. This work opens a door for the pyro-catalytic energy harvesting from the cold–hot alternations by a class of 2D few-layer materials.

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Waste Heat Energy Harvesting by use of BaTiO3 for Pyroelectric Hydrogen Generation

Cited by 2 publications

References 0 publications

Demonstration of Enhanced Piezo-Catalysis for Hydrogen Generation and Water Treatment at the Ferroelectric Curie Temperature

Demonstration of Enhanced Piezo-Catalysis for Hydrogen Generation and Water Treatment at the Ferroelectric Curie Temperature

Room-temperature pyro-catalytic hydrogen generation of 2D few-layer black phosphorene under cold-hot alternation

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