This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1002/admt.202000592 in citations.
Please use the identifier: http://hdl.handle.net/2128/26699 in citations.
Bifunctional CoFeVO$_x$ Catalyst for Solar Water Splitting by using Multijunction and Heterojunction Silicon Solar Cells
Bifunctional CoFeVO$_x$ Catalyst for Solar Water Splitting by using Multijunction and Heterojunction Silicon Solar Cells
Photovoltaic driven electrochemical (PV-EC) water splitting technology is considered as one of the solutions for an environmental-friendly hydrogen supply. In a PV-EC system, efficient catalysts are required to increase the rate of both oxygen evolution reaction (OER) and hydrogen evolution reaction...
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Personal Name(s): | Lee, Minoh (Corresponding author) |
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Ding, Xinyu / BANERJEE, SWARNENDU / Krause, Florian / Smirnov, Vladimir / Astakhov, Oleksandr / Merdzhanova, Tsvetelina / Klingebiel, Benjamin / Kirchartz, Thomas / Finger, Friedhelm / Rau, Uwe / Haas, Stefan | |
Contributing Institute: |
Photovoltaik; IEK-5 |
Published in: | Advanced materials technologies, 5 (2020) 12, S. 2000592 |
Imprint: |
Weinheim
Wiley
2020
|
DOI: |
10.1002/admt.202000592 |
Document Type: |
Journal Article |
Research Program: |
Solar cells of the next generation |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/26699 in citations.
Photovoltaic driven electrochemical (PV-EC) water splitting technology is considered as one of the solutions for an environmental-friendly hydrogen supply. In a PV-EC system, efficient catalysts are required to increase the rate of both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). Here, we present the development of a CoFeVO$_x$ bifunctional catalyst produced by a simple electrodeposition method. We have found that after the water splitting reaction vanadium is almost completely depleted in the mixture of elements for OER while its concentration at the HER catalyst is similar or even higher after the reaction. For the OER catalyst the depletion of vanadium might lead to the formation of pores, which could be correlated with the activity enhancement. The developed catalyst is integrated into PV-EC devices, coupled with different types of silicon PV. An average solar to hydrogen efficiency of 13.3 % (9.6 cm$^2$ PV aperture area) is achieved with a shingled module consisting of three laterally series connected silicon heterojunction solar cells. |