Design Principle and Loss Engineering for Photovoltaic–Electrolysis Cell System
| Autor: | Sun-Tae Hwang, Ki Tae Nam, Gunho Kim, Yoo Kyung Go, Woo Je Chang, Hongmin Seo, Heon Min Lee, Kyung-Hwan Lee, Wonki Yoon, Kyoungsuk Jin, Heonjin Ha, Seh Won Ahn, Jung-Ik Ha, Jung Sug Hong |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Engineering
Electrolytic cell General Chemical Engineering Exchange current density 02 engineering and technology 010402 general chemistry 01 natural sciences Article law.invention lcsh:Chemistry law Solar cell Electronic engineering Electrolysis business.industry Photovoltaic system Energy conversion efficiency General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Light intensity Solar cell efficiency lcsh:QD1-999 Optoelectronics 0210 nano-technology business |
| Zdroj: | ACS Omega, Vol 2, Iss 3, Pp 1009-1018 (2017) ACS Omega |
| ISSN: | 2470-1343 |
| Popis: | The effects of exchange current density, Tafel slope, system resistance, electrode area, light intensity, and solar cell efficiency were systematically decoupled at the converter-assisted photovoltaic-water electrolysis system. This allows key determinants of overall efficiency to be identified. On the basis of this model, 26.5% single-junction GaAs solar cell was combined with a membrane-electrode-assembled electrolysis cell (EC) using the dc/dc converting technology. As a result, we have achieved a solar-to-hydrogen conversion efficiency of 20.6% on a prototype scale and demonstrated light intensity tracking optimization to maintain high efficiency. We believe that this study will provide design principles for combining solar cells, ECs, and new catalysts and can be generalized to other solar conversion chemical devices while minimizing their power loss during the conversion of electrical energy into fuel. |
| Databáze: | OpenAIRE |
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