TY - JOUR
T1 - Mechanistic Studies of Liquid Metal Anode SOFCs II
T2 - Development of a Coulometric Titration Technique to Aid Reactor Design
AU - Toleuova, Aliya
AU - Maskell, William C.
AU - Yufit, Vladimir
AU - Shearing, Paul R.
AU - Brett, Daniel J.L.
N1 - Funding Information:
The authors would like to thank Nazarbayev University and the Government of Republic of Kazakhstan for the BOLASHAK Scholarship for Dr. Aliya Toleuova and the EPSRC Supergen Fuel Cells programme (EP/G030995/1) and EPSRC projects (EP/J001007/1, EP/M014045/1 and EP/M014371/1), for supporting the research in the UCL Electrochemical Innovation Lab. Shearing recognises the Royal Academy of Engineering for support. We also acknowledge Prof. Ted Roberts (University of Alberta) for valuable technical discussion.
Publisher Copyright:
© 2016 Elsevier Ltd
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2016/11/2
Y1 - 2016/11/2
N2 - 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, z̅, 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 z̅, together with an example of its application.
AB - 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, z̅, 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 z̅, together with an example of its application.
KW - Anodic injection coulometry
KW - Hydrogen
KW - Liquid tin
KW - Molten metal anode
KW - Solid oxide fuel cell
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U2 - 10.1016/j.ces.2016.05.018
DO - 10.1016/j.ces.2016.05.018
M3 - Article
AN - SCOPUS:84975460131
VL - 154
SP - 100
EP - 107
JO - Chemical Engineering Science
JF - Chemical Engineering Science
SN - 0009-2509
ER -