Hydrogen concentrator demonstrator module with 19.8% solar-to-hydrogen conversion efficiency according to the higher heating value

Fallisch A, Schellhase L, Fresko J, Zedda M, Ohlmann J, Steiner M, Boesch A, Zielke L, Thiele S, Dimroth F, Smolinka T (2017)

Publication Type: Journal article

Publication year: 2017

Journal

International Journal of Hydrogen Energy Elsevier

Book Volume: 42

Pages Range: 26804-26815

Journal Issue: 43

DOI: 10.1016/j.ijhydene.2017.07.069

Abstract

Renewable hydrogen is a key element to a sustainable energy system of the future. Therefore solar hydrogen generation has been investigated by various research groups in recent years. The patented concept of the Hydrogen Concentrator (HyCon), which combines III-V multi-junction solar cells with polymer electrolyte membrane electrolysis, has been constantly developed over the last years. In this work, a unique weatherproof HyCon module with an area of 8 × 90.7 cm2 was build and characterized in an outdoor measurement for over two month. During this measurement period, the module showed a stable operation regardless of the water volume flow. The module works under natural convection without any circulation pumps at a suitable maximum temperature of 60–70 °C. The HyCon module consists of eight individual units (HyCon cells), each combining a photovoltaic and an electrolysis cell. Some of the HyCon cells reach a solar-to-hydrogen conversion efficiency of 20% according to the higher heating value at high current densities of 0.8 A/cm2. On the module level a maximum efficiency of 19.8% is reached. To the best of our knowledge this is the highest conversion efficiency so far achieved at such high current densities using a dual junction solar cell.

Involved external institutions

Fraunhofer-Institut für Solare Energiesysteme (ISE) / Fraunhofer Institute for Solar Energy Systems DE Germany (DE) Albert-Ludwigs-Universität Freiburg DE Germany (DE)

How to cite

APA:

Fallisch, A., Schellhase, L., Fresko, J., Zedda, M., Ohlmann, J., Steiner, M.,... Smolinka, T. (2017). Hydrogen concentrator demonstrator module with 19.8% solar-to-hydrogen conversion efficiency according to the higher heating value. International Journal of Hydrogen Energy, 42(43), 26804-26815. https://dx.doi.org/10.1016/j.ijhydene.2017.07.069

MLA:

Fallisch, Arne, et al. "Hydrogen concentrator demonstrator module with 19.8% solar-to-hydrogen conversion efficiency according to the higher heating value." International Journal of Hydrogen Energy 42.43 (2017): 26804-26815.

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