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Performance and analysis of a novel polymer electrolyte membrane fuel cell using a solution based redox mediator

Singh, R, Shah, A.A., Potter, A., Clarkson, B., Creeth, A., Downs, C. and Walsh, F.C. (2012) Performance and analysis of a novel polymer electrolyte membrane fuel cell using a solution based redox mediator Journal of Power Sources, 201, pp. 159-163. (doi:10.1016/j.jpowsour.2011.10.078).

Record type: Article


The cost and availability of platinum, together with degradation phenomena that are directly or indirectly caused by the use of a precious-metal catalyst, are major obstacles to the commercialization of incumbent polymer electrolyte membrane fuel cell (PEMFC) technologies. The Flowcath® fuel cell technology is a highly promising alternative to the conventional PEMFC that avoids many of these issues. While the anode resembles that of a conventional cell, the novel cathode employs a liquid-based polyoxometalate redox mediator and is entirely free of any precious metals. A transition-metal based redox centre within the polyoxometalate undergoes reversible reduction in the cathode and is regenerated externally using air. In this paper, the performance of the cell for different catholyte flow rates and polyoxometalate concentrations is described and a first model is developed and validated. The voltage losses are quantified and compared to the values for a conventional cell employing a standard membrane electrode assembly.

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e-pub ahead of print date: 28 October 2011
Published date: March 2012
Keywords: polymer electrolyte membrane fuel cell, polyoxometalate, liquid redox cathode, platinum-free, mathematical model
Organisations: Engineering Science Unit


Local EPrints ID: 202597
ISSN: 0378-7753
PURE UUID: 30c73d31-c2ff-4cae-b942-96d4d4d7ea81

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Date deposited: 09 Nov 2011 10:14
Last modified: 18 Jul 2017 11:10

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Author: R Singh
Author: A.A. Shah
Author: A. Potter
Author: B. Clarkson
Author: A. Creeth
Author: C. Downs
Author: F.C. Walsh

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