Mechanistic Studies of Liquid Metal Anode SOFCs II: Development of a Coulometric Titration Technique to Aid Reactor Design

Aliya Toleuova, William C. Maskell, Vladimir Yufit, Paul R. Shearing, Daniel J L Brett

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Improved understanding of the operation of liquid metal anode solid oxide fuel cells (LMA-SOFCs) is required to progress this promising energy conversion technology. In order to facilitate analysis and interpretation, initial studies have been carried out with a simple system in which hydrogen is used as the fuel and the liquid metal electrode is operated in a potential region where it effectively behaves as an 'inert' solvent for dissolved gases. A model for the processes taking place in a liquid tin anode (LTA) supplied with hydrogen has previously been reported which identified a key parameter, the Dynamic Oxygen Utilisation Coefficient, z(combining overline), important for understanding the operation and design of these systems. This parameter serves a similar role to the Damköhler number, widely applied in chemical reaction engineering to relate the chemical reaction rate to the transport phenomena rate. This paper describes the development of a method, named Anodic Injection Coulometry (AIC), to determine z(combining overline), together with an example of its application.

Original languageEnglish
JournalChemical Engineering Science
DOIs
Publication statusAccepted/In press - Jan 31 2016

Keywords

  • Anodic injection coulometry
  • Hydrogen
  • Liquid tin
  • Molten metal anode
  • Solid oxide fuel cell

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Applied Mathematics
  • Industrial and Manufacturing Engineering

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