arXiv Applied Physics
arXiv Applied Physics
4 years ago

A highly integrated, stand-alone photoelectrochemical device for large-scale solar hydrogen production. (arXiv:1910.13948v1 [physics.app-ph])

Minoh Lee, Bugra Turan, Jan-Philipp Becker, Katharina Welter, Benjamin Klingebiel, Elmar Neumann, Yoo Jung Sohn, Tsvetelina Merdzhanova, Thomas Kirchartz, Friedhelm Finger, Uwe Rau, Stefan Haas
Although photoelectrochemical water splitting is likely to be an important and powerful tool to provide environmentally friendly hydrogen, most developments in this field have been conducted on a laboratory scale so far. In order for the technology to make a sizeable impact on the energy transition, scaled up devices made of inexpensive and earth abundant materials must be developed. In this work, we demonstrate a scalable (64 cm2 aperture area) artificial photoelectrochemical device composed of triple-junction thin-film silicon solar cells in conjunction with an electrodeposited bifunctional nickel iron molybdenum water splitting catalyst. Our device shows a solar to hydrogen efficiency of up to 4.67% (5.33% active area) without bias assistance and wire connection. Furthermore, gas separation was enabled by incorporating a membrane in a 3D printed device frame.

Publisher URL: http://arxiv.org/abs/1910.13948

DOI: arXiv:1910.13948v1

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