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Title: Experimental validation of solid oxide fuel cell polarization modeling: An LSM-YSZ/YSZ/Ni-YSZ case study

Abstract

Polarization modeling based on the measured I-V curves is a useful tool for analyzing SOFC performance and diagnosing performance limitations. Using the polarization model, the overpotential of a cell is usually separated into different polarization contributions, including area specific ohmic polarization, activation polarization, and anodic and cathodic concentration polarizations. In this study, we aim to experimentally validate the accuracy of the polarization model. As a case study, anode-supported cells with LSM-YSZ/YSZ/Ni-YSZ configuration are used. By curve-fitting the I-V curves of a cell tested under different cathode oxygen partial pressures into the polarization model, the contributions of different polarization losses are quantified. To validate the polarization model, independent experiments/studies including electrochemical impedance spectroscopy, cathode kinetics study, ex-situ diffusivity measurement, and tortuosity measurement using 3D reconstructed anode are conducted. The results from polarization modeling and from validation studies are in good agreement, thereby validating the polarization model for SOFC performance analysis.

Authors:
ORCiD logo [1];  [1];  [2];  [1]; ORCiD logo [3]; ORCiD logo [3];  [3]
  1. Boston Univ., MA (United States). Dept. of Materials Science and Engineering
  2. Boston Univ., MA (United States). Dept. of Electrical and Computer Engineering
  3. Boston Univ., MA (United States). Dept. of Materials Science and Engineering; Boston Univ., MA (United States). Dept. of Mechanical Engineering
Publication Date:
Research Org.:
Boston Univ., MA (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1849127
Alternate Identifier(s):
OSTI ID: 1658970
Grant/Contract Number:  
FE0023325; FE0026096
Resource Type:
Accepted Manuscript
Journal Name:
Electrochimica Acta
Additional Journal Information:
Journal Volume: 361; Journal Issue: C; Journal ID: ISSN 0013-4686
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Electrochemistry; Solid oxide fuel cells; Polarization modeling; Cathode reaction kineticsTortuosity; 3D reconstruction

Citation Formats

Wang, Ruofan, Lu, Yanchen, Ma, Yenai, Sun, Zhihao, Gopalan, Srikanth, Basu, Soumendra N., and Pal, Uday B. Experimental validation of solid oxide fuel cell polarization modeling: An LSM-YSZ/YSZ/Ni-YSZ case study. United States: N. p., 2020. Web. doi:10.1016/j.electacta.2020.137052.
Wang, Ruofan, Lu, Yanchen, Ma, Yenai, Sun, Zhihao, Gopalan, Srikanth, Basu, Soumendra N., & Pal, Uday B. Experimental validation of solid oxide fuel cell polarization modeling: An LSM-YSZ/YSZ/Ni-YSZ case study. United States. https://doi.org/10.1016/j.electacta.2020.137052
Wang, Ruofan, Lu, Yanchen, Ma, Yenai, Sun, Zhihao, Gopalan, Srikanth, Basu, Soumendra N., and Pal, Uday B. Thu . "Experimental validation of solid oxide fuel cell polarization modeling: An LSM-YSZ/YSZ/Ni-YSZ case study". United States. https://doi.org/10.1016/j.electacta.2020.137052. https://www.osti.gov/servlets/purl/1849127.
@article{osti_1849127,
title = {Experimental validation of solid oxide fuel cell polarization modeling: An LSM-YSZ/YSZ/Ni-YSZ case study},
author = {Wang, Ruofan and Lu, Yanchen and Ma, Yenai and Sun, Zhihao and Gopalan, Srikanth and Basu, Soumendra N. and Pal, Uday B.},
abstractNote = {Polarization modeling based on the measured I-V curves is a useful tool for analyzing SOFC performance and diagnosing performance limitations. Using the polarization model, the overpotential of a cell is usually separated into different polarization contributions, including area specific ohmic polarization, activation polarization, and anodic and cathodic concentration polarizations. In this study, we aim to experimentally validate the accuracy of the polarization model. As a case study, anode-supported cells with LSM-YSZ/YSZ/Ni-YSZ configuration are used. By curve-fitting the I-V curves of a cell tested under different cathode oxygen partial pressures into the polarization model, the contributions of different polarization losses are quantified. To validate the polarization model, independent experiments/studies including electrochemical impedance spectroscopy, cathode kinetics study, ex-situ diffusivity measurement, and tortuosity measurement using 3D reconstructed anode are conducted. The results from polarization modeling and from validation studies are in good agreement, thereby validating the polarization model for SOFC performance analysis.},
doi = {10.1016/j.electacta.2020.137052},
journal = {Electrochimica Acta},
number = C,
volume = 361,
place = {United States},
year = {Thu Sep 03 00:00:00 EDT 2020},
month = {Thu Sep 03 00:00:00 EDT 2020}
}

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