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Issue 23, 2013
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Chronoamperometric study of membrane electrode assembly operation in continuous flow photoelectrochemical water splitting

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Abstract

Water splitting was performed in a photoelectrochemical cell (PEC) with water oxidation and hydrogen formation reactions in two separate compartments. A photoanode consisting of carbon paper loaded with TiO2 and a cathode made of Pt dispersed on carbon black spread also on carbon paper were fixed on both sides of a Nafion® membrane and electrically coupled via an external circuit. Anode and cathode compartments with serpentine flow field were operated either in the liquid or vapour phase. Electrical current was monitored with chronoamperometry and D2 formation from deuterated water using mass spectrometry. Mapping the photocurrent under a variety of reaction conditions enabled identification of the limiting factors related to proton and photocarrier transport and reaction product evacuation. This comprehensive research approach to the operation of a PEC will assist future optimisation of cell design and development of membrane electrode assemblies.

Graphical abstract: Chronoamperometric study of membrane electrode assembly operation in continuous flow photoelectrochemical water splitting

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Article information


Submitted
28 Feb 2013
Accepted
10 Apr 2013
First published
11 Apr 2013

Phys. Chem. Chem. Phys., 2013,15, 9315-9325
Article type
Paper

Chronoamperometric study of membrane electrode assembly operation in continuous flow photoelectrochemical water splitting

J. Rongé, D. Nijs, S. Kerkhofs, K. Masschaele and J. A. Martens, Phys. Chem. Chem. Phys., 2013, 15, 9315
DOI: 10.1039/C3CP50890K

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