Effect of the ambient conditions on the operation of a large-area integrated photovoltaic-electrolyser
| Autor: | Sonya Calnan, Stefan Janke, Iris Dorbandt, Aline Luxa, Fuxi Bao, Christian Schary, Erno Kemppainen, Stefan Aschbrenner, Rutger Schlatmann, Radu Bors, Bernd Stannowski |
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| Rok vydání: | 2020 |
| Předmět: |
Solar cells of the next generation
Materials science Hydrogen Renewable Energy Sustainability and the Environment business.industry Electrolytic cell Energy conversion efficiency Photovoltaic system Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology 7. Clean energy 01 natural sciences 0104 chemical sciences Anode Nickel Fuel Technology chemistry Optoelectronics 0210 nano-technology business Hydrogen production |
| Zdroj: | Sustainable Energy & Fuels |
| ISSN: | 2398-4902 |
| DOI: | 10.1039/d0se00921k |
| Popis: | An integrated photovoltaic electrolyser with a solar collection area of 294 cm2 was constructed and its performance, represented by the solar to hydrogen STH conversion efficiency and hydrogen production rate mH2 in various outdoor and indoor conditions, was investigated by measurements of the product gas streams. The device was composed of silicon heterojunction photovoltaic cells integrated with an electrolysis cell using nickel foam electrodes coated with nickel iron oxide and nickel molybdenum on the anode and cathode side, respectively, with 1.0 M KOH electrolyte. Depending on the operating conditions, the STH efficiency was typically 3.4 10 and typical mH2 of 30 60 mg h amp; 8722;1, approximately corresponding to 1 2 W output power. When considering non concentrating devices, the STH efficiency is one of the best for solar collection areas exceeding 100 cm2 and the hydrogen production rate the highest reported for devices smaller than 1 m2. The efficiency seems to depend mainly on the temperature, and less on the irradiance, reducing at a rate of about 0.35 absolute per 1 C increase in ambient temperature, significantly steeper than the efficiency of the used photovoltaic cells, making it a possible concern for practical hydrogen generation |
| Databáze: | OpenAIRE |
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