TY - JOUR
T1 - In-situ electrochemical characterization methods for industrial-sized planar solid oxide fuel cells Part I: Methodology, qualification and detection of carbon deposition
AU - Subotić, Vanja
AU - Schluckner, Christoph
AU - Strasser, Johannes
AU - Lawlor, Vincent
AU - Mathe, Jörg
AU - Rechberger, Jürgen
AU - Schröttner, Hartmuth
AU - Hochenauer, Christoph
PY - 2016/5/9
Y1 - 2016/5/9
N2 - Failure modes such as carbon deposition must be avoided or controlled in order to ensure the safe operation of auxiliary power units running on diesel reformate or other carbon-containing fuels. Electrochemical impedance spectroscopy (EIS) technology and methodology combined with the distribution of relaxation times (DRT) method could be promising technique to investigate the critical operating conditions or play a role in an online monitoring techniques such as total harmonic distortion analysis (THDA) or fast EIS thus allowing counteractions, for example changing of the operating conditions or cell-protecting regeneration. The sample anode-supported solid oxide fuel cells for industrial application are analyzed and characterized with the aim of isolating anode processes and enabling fast detection of carbon depositions. Different process mechanisms are successfully separated using this methodology and without a reference electrode, which is of great importance for the practical usage. This study represents a first step in a broader study which will investigate more into carbon depositions and also other ways of deposition and poisoning of the anode and the cathode.
AB - Failure modes such as carbon deposition must be avoided or controlled in order to ensure the safe operation of auxiliary power units running on diesel reformate or other carbon-containing fuels. Electrochemical impedance spectroscopy (EIS) technology and methodology combined with the distribution of relaxation times (DRT) method could be promising technique to investigate the critical operating conditions or play a role in an online monitoring techniques such as total harmonic distortion analysis (THDA) or fast EIS thus allowing counteractions, for example changing of the operating conditions or cell-protecting regeneration. The sample anode-supported solid oxide fuel cells for industrial application are analyzed and characterized with the aim of isolating anode processes and enabling fast detection of carbon depositions. Different process mechanisms are successfully separated using this methodology and without a reference electrode, which is of great importance for the practical usage. This study represents a first step in a broader study which will investigate more into carbon depositions and also other ways of deposition and poisoning of the anode and the cathode.
KW - Solid Oxide Fuel Cell (SOFC)
KW - Electrochemical analysis
KW - Electrochemical impedance spectroscopy
KW - DRT-analysis
KW - Equivalent circuit analysis
U2 - 10.1016/j.electacta.2016.05.025
DO - 10.1016/j.electacta.2016.05.025
M3 - Article
SN - 1873-3859
VL - 207
SP - 224
EP - 236
JO - Electrochimica Acta
JF - Electrochimica Acta
ER -