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Journal of Photonics for Energy

Hydrogen and electricity production in a light-assisted microbial photoelectrochemical cell with CaFe2O4 photocathode
Author(s): Qing-Yun Chen; Kai Zhang; Jian-Shan Liu; Yun-Hai Wang
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Paper Abstract

A microbial photoelectrochemical cell (MPEC) was designed with a p-type CaFe 2 O 4 semiconductor as the photoelectrode for simultaneous hydrogen and electricity production under light illumination. The CaFe 2 O 4 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 CaFe 2 O 4 photoelectrode presented the cathodic photocurrent output. For the MPEC, with an external resistance of 2000 Ω, the maximum power density of 143    mW · m 2 was obtained. Furthermore, with an external resistance of 100 Ω, the maximum hydrogen production rate of 6.7    μ L · h 1 · cm 2 could be achieved. The MPEC with CaFe 2 O 4 photocathode was compared to MPEC with other photocathodes as well as photocatalytic water splitting technology.

Paper Details

Date Published: 22 May 2017
PDF: 10 pages
J. Photon. Energy. 7(2) 026501 doi: 10.1117/1.JPE.7.026501
Published in: Journal of Photonics for Energy Volume 7, Issue 2
Show Author Affiliations
Qing-Yun Chen, Xi'an Jiaotong Univ. (China)
Kai Zhang, Xi'an Jiaotong Univ. (China)
Jian-Shan Liu, Xi'an Jiaotong Univ. (China)
Yun-Hai Wang, Xi'an Jiaotong Univ. (China)

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