Solar Fuel and Solar Hydrogen

Hydrogen and electricity production in a light-assisted microbial photoelectrochemical cell with CaFe2O4 photocathode

[+] Author Affiliations
Qing-Yun Chen, Kai Zhang, Jian-Shan Liu

Xi’an Jiaotong University, International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an, China

Yun-Hai Wang

Xi’an Jiaotong University, Department of Environmental Science and Engineering, Xi’an, China

J. Photon. Energy. 7(2), 026501 (May 22, 2017). doi:10.1117/1.JPE.7.026501
History: Received February 14, 2017; Accepted May 8, 2017
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Abstract.  A microbial photoelectrochemical cell (MPEC) was designed with a p-type CaFe2O4 semiconductor as the photoelectrode for simultaneous hydrogen and electricity production under light illumination. The CaFe2O4 photoelectrode was synthesized by the sol–gel method and well characterized by x-ray diffraction, field emission scanning electron microscope, and UV–Vis–NIR spectrophotometer. The linear sweep voltammogram of the CaFe2O4 photoelectrode presented the cathodic photocurrent output. For the MPEC, with an external resistance of 2000 Ω, the maximum power density of 143  mW·m2 was obtained. Furthermore, with an external resistance of 100 Ω, the maximum hydrogen production rate of 6.7  μL·h1·cm2 could be achieved. The MPEC with CaFe2O4 photocathode was compared to MPEC with other photocathodes as well as photocatalytic water splitting technology.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Qing-Yun Chen ; Kai Zhang ; Jian-Shan Liu and Yun-Hai Wang
"Hydrogen and electricity production in a light-assisted microbial photoelectrochemical cell with CaFe2O4 photocathode", J. Photon. Energy. 7(2), 026501 (May 22, 2017). ; http://dx.doi.org/10.1117/1.JPE.7.026501


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