Home > Research > Publications & Outputs > In-operando optical observations of alkaline fu...

Associated organisational unit

Electronic data

  • Int J Hydrogen Energ - AFC optical access

    Rights statement: This is the author’s version of a work that was accepted for publication in International Journal of Hydrogen Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Hydrogen Energy, 42, (33) 2017 DOI: 10.1016/j.ijhydene.2017.07.018

    Accepted author manuscript, 2 MB, PDF document

    Available under license: CC BY-NC-ND: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License

Links

Text available via DOI:

View graph of relations

In-operando optical observations of alkaline fuel cell electrode surfaces during harsh cycling tests

Research output: Contribution to journalJournal article

Published
Close
<mark>Journal publication date</mark>17/08/2017
<mark>Journal</mark>International Journal of Hydrogen Energy
Issue number33
Volume42
Number of pages12
Pages (from-to)21203-21214
Publication statusPublished
Early online date21/07/17
Original languageEnglish

Abstract

The durability of low-cost fuel cells is one of the last technical challenges to be overcome before the widespread adoption of fuel cells can become a reality. Most research concentrates on polymer electrolyte membrane or solid oxide fuel cells in this topic with little published regarding the durability of recirculating liquid electrolyte alkaline fuel cells. In this paper we present an investigation into the durability of this fuel cell variant under harsh load cycling, air starvation and fuel starvation conditions. In the study, making use of the high ionic conductivity of the electrolyte, a novel rig design was utilised, which allowed the surfaces of the electrodes to be constantly monitored optically during the experiments. This demonstrated the good physical durability of the anode during the test protocols whilst highlighted the instability of the manganese-cobalt spinel cathode, used in this study, during the air starvation protocols. The load cycling stability of the alkaline fuel cells used was found to be good with the standard configuration giving only around a 2.7% voltage degradation at 100 mA cm−2 operating point over 8000 load cycles.

Bibliographic note

This is the author’s version of a work that was accepted for publication in International Journal of Hydrogen Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Hydrogen Energy, 42, (33), 2017 DOI: 10.1016/j.ijhydene.2017.07.018