UV-Light-Driven Oxygen Pumping in a High-Temperature Solid Oxide Photoelectrochemical Cell
| Autor: | Esmaeil Esmaeili, Juergen Fleig, Karl Ponweiser, Alexander K. Opitz, Bernhard Rotter, Johann Summhammer, Gregor Walch, Georg Christoph Brunauer |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
business.industry Open-circuit voltage Photoelectrochemistry 02 engineering and technology Photoelectrochemical cell 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences Energy storage 0104 chemical sciences Electronic Optical and Magnetic Materials Biomaterials Chemical energy Electrode Optoelectronics Water splitting 0210 nano-technology business |
| Zdroj: | Advanced Functional Materials. 26:120-128 |
| ISSN: | 1616-301X |
| Popis: | A solid-state photoelectrochemical cell is operated between 400 and 500 °C under 365 nm UV light. The cell consists of a photovoltaic part, based on a La0.8Sr0.2CrO3/SrTiO3 junction, and an electrochemical part including a zirconia solid electrolyte with a shared (La,Sr)FeO3 electrode. The photovoltaic cell part leads to open circuit voltages up to 920 mV at 400 °C. Upon UV light, this driving force is used in the electrochemical part of the cell to pump oxygen from low to high partial pressures, i.e., to convert radiation energy to chemical energy. This demonstrates the feasibility of high-temperature photoelectrochemical cells for solar energy storage. The detailed characterization of the different resistance contributions in the system by DC and AC methods reveals the parts of the cell to be optimized for finally achieving high-temperature photoelectrochemical water splitting. |
| Databáze: | OpenAIRE |
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