TY - GEN
T1 - Recovery of anode performance by reverse current treatment
AU - Klotz, D.
AU - Leonide, A.
AU - Ivers-Tiffée, E.
N1 - Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2009
Y1 - 2009
N2 - Many research studies have been focusing on the long-term stability of Ni/8YSZ cermet anodes. In this contribution we present an effective method for the recovery of anode supported cells (ASC) after degradation. The application of a short-time reverse current ended up with a significant drop in the area specific resistance (ASR) of the ASC. The recovery of the ASC was attributed to an improvement of the electrochemical polarization loss in the anode functional layer (AFL), which was reduced by 40 %. This interpretation was obtained from EIS data by a combined deconvolution with the distribution of relaxation times (DRT) and Complex Nonlinear Least Squares (CNLS) fitting approach. Measurements over time proved a permanent recovery of anode performance by reverse current treatment.
AB - Many research studies have been focusing on the long-term stability of Ni/8YSZ cermet anodes. In this contribution we present an effective method for the recovery of anode supported cells (ASC) after degradation. The application of a short-time reverse current ended up with a significant drop in the area specific resistance (ASR) of the ASC. The recovery of the ASC was attributed to an improvement of the electrochemical polarization loss in the anode functional layer (AFL), which was reduced by 40 %. This interpretation was obtained from EIS data by a combined deconvolution with the distribution of relaxation times (DRT) and Complex Nonlinear Least Squares (CNLS) fitting approach. Measurements over time proved a permanent recovery of anode performance by reverse current treatment.
UR - http://www.scopus.com/inward/record.url?scp=77649089989&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77649089989&partnerID=8YFLogxK
U2 - 10.1149/1.3205750
DO - 10.1149/1.3205750
M3 - Conference contribution
AN - SCOPUS:77649089989
SN - 9781566777391
T3 - ECS Transactions
SP - 2049
EP - 2056
BT - ECS Transactions - Solid Oxide Fuel Cells 11 (SOFC-XI)
T2 - 11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting
Y2 - 4 October 2009 through 9 October 2009
ER -