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Title: Durability of symmetric-structured metal-supported solid oxide fuel cells

Abstract

Symmetric-structure metal-supported solid oxide fuel cells (MS-SOFC) with YSZ electrolyte are fabricated with porous YSZ backbone electrodes, stainless steel supports, and infiltrated catalysts on both anode and cathode side. Durability towards aggressive thermal and redox cycling, and long-term operation is assessed. Additionally, many sealing material candidates are screened for compatibility with the cell materials and operating conditions, and a commercial sealing glass, GM31107, is selected. LSM/SDCN cells are then subjected to 200 very fast thermal cycles and 20 complete redox cycles, with minimal impact to cell performance. LSM/SDCN and SDCN/SDCN cells are operated for more than 1200 h at 700 °C. The seal and cell hermeticity is maintained, and cell ohmic impedance does not change significantly during operation. Electrode polarization increases during operation, leading to significant degradation of the cell performance. Lastly, in-operando EIS and post-mortem SEM/EDS analysis suggest that catalyst coarsening and cathode Cr deposition are the dominant degradation modes.

Authors:
ORCiD logo [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1532213
Alternate Identifier(s):
OSTI ID: 1549265
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Power Sources
Additional Journal Information:
Journal Volume: 369; Journal Issue: C; Journal ID: ISSN 0378-7753
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; SOFC; Metal-supported; Chromium poisoning; Symmetric cell

Citation Formats

Tucker, Michael C. Durability of symmetric-structured metal-supported solid oxide fuel cells. United States: N. p., 2017. Web. doi:10.1016/j.jpowsour.2017.09.075.
Tucker, Michael C. Durability of symmetric-structured metal-supported solid oxide fuel cells. United States. https://doi.org/10.1016/j.jpowsour.2017.09.075
Tucker, Michael C. Tue . "Durability of symmetric-structured metal-supported solid oxide fuel cells". United States. https://doi.org/10.1016/j.jpowsour.2017.09.075. https://www.osti.gov/servlets/purl/1532213.
@article{osti_1532213,
title = {Durability of symmetric-structured metal-supported solid oxide fuel cells},
author = {Tucker, Michael C.},
abstractNote = {Symmetric-structure metal-supported solid oxide fuel cells (MS-SOFC) with YSZ electrolyte are fabricated with porous YSZ backbone electrodes, stainless steel supports, and infiltrated catalysts on both anode and cathode side. Durability towards aggressive thermal and redox cycling, and long-term operation is assessed. Additionally, many sealing material candidates are screened for compatibility with the cell materials and operating conditions, and a commercial sealing glass, GM31107, is selected. LSM/SDCN cells are then subjected to 200 very fast thermal cycles and 20 complete redox cycles, with minimal impact to cell performance. LSM/SDCN and SDCN/SDCN cells are operated for more than 1200 h at 700 °C. The seal and cell hermeticity is maintained, and cell ohmic impedance does not change significantly during operation. Electrode polarization increases during operation, leading to significant degradation of the cell performance. Lastly, in-operando EIS and post-mortem SEM/EDS analysis suggest that catalyst coarsening and cathode Cr deposition are the dominant degradation modes.},
doi = {10.1016/j.jpowsour.2017.09.075},
journal = {Journal of Power Sources},
number = C,
volume = 369,
place = {United States},
year = {2017},
month = {10}
}

Journal Article:

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Cited by: 12 works
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Figures / Tables:

Figure 1 Figure 1: SEM image of (a,b) polished cross section of MS-SOFC structure after sintering and before catalyst infiltration, and (c) cathode pore after infiltration of LSM. Reproduced with permission from Ref. 9.

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Works referencing / citing this record:

Metal‐Supported Solid Oxide Electrolysis Cell with Significantly Enhanced Catalysis
journal, April 2019

  • Wang, Ruofan; Dogdibegovic, Emir; Lau, Grace Y.
  • Energy Technology, Vol. 7, Issue 5
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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.