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Title: Evaluation of Cr-Tolerance of the Sr 2 Fe 1.5 Mo 0.5 O 6-δ Cathode for Solid Oxide Fuel Cells

Abstract

Sr 2Fe 1.5Mo 0.5O 6-δ (SFM) is a promising electrode material recently studied for intermediate temperature solid oxide fuel cells (IT-SOFCs). In this work, Cr-tolerance of SFM has been systematically assessed. Due to the presence of Sr at the A-site, SFM has been found to be vulnerable to Cr species resulted from the metallic interconnects. The main product of Cr-poisoning for SFM is SrCrO 4 deposited on the SFM surface. Furthermore, the Cr-poisoning mechanism of the SFM material has been evaluated both experimentally and thermodynamically. To enhance Cr-tolerance of SFM, LaCoO 3-δ-infiltrated SFM (LC@SFM) has been developed. LC hinders the direct contact of SFM with Cr species and LC@SFM has significantly enhanced Cr-tolerance than SFM. This study provides valuable guidance for the wide application of SFM cathode in IT-SOFCs.

Authors:
 [1];  [2];  [3];  [4]; ORCiD logo [5];  [5]; ORCiD logo [2]
  1. Univ. of South Carolina, Columbia, SC (United States); Huazhong Univ. of Science and Technology, Wuhan (China)
  2. Univ. of South Carolina, Columbia, SC (United States)
  3. Univ. of South Carolina, Columbia, SC (United States); Guangdong Univ. of Technology, Guangzhou, Guangdong (China)
  4. Tianjin Univ. of Technology, Tianjin (China)
  5. Huazhong Univ. of Science and Technology, Wuhan (China)
Publication Date:
Research Org.:
Univ. of South Carolina, Columbia, SC (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1571440
Grant/Contract Number:  
FE0031176
Resource Type:
Accepted Manuscript
Journal Name:
ACS Applied Energy Materials
Additional Journal Information:
Journal Name: ACS Applied Energy Materials; Journal ID: ISSN 2574-0962
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; SFM; IT-SOFCs; Cr species; Cathode; Cr-tolerance

Citation Formats

Qiu, Peng, Lin, Jie, Lei, Libin, Yuan, Zhihao, Jia, Lichao, Li, Jian, and Chen, Fanglin. Evaluation of Cr-Tolerance of the Sr 2 Fe 1.5 Mo 0.5 O 6-δ Cathode for Solid Oxide Fuel Cells. United States: N. p., 2019. Web. doi:10.1021/acsaem.9b01605.
Qiu, Peng, Lin, Jie, Lei, Libin, Yuan, Zhihao, Jia, Lichao, Li, Jian, & Chen, Fanglin. Evaluation of Cr-Tolerance of the Sr 2 Fe 1.5 Mo 0.5 O 6-δ Cathode for Solid Oxide Fuel Cells. United States. doi:10.1021/acsaem.9b01605.
Qiu, Peng, Lin, Jie, Lei, Libin, Yuan, Zhihao, Jia, Lichao, Li, Jian, and Chen, Fanglin. Mon . "Evaluation of Cr-Tolerance of the Sr 2 Fe 1.5 Mo 0.5 O 6-δ Cathode for Solid Oxide Fuel Cells". United States. doi:10.1021/acsaem.9b01605.
@article{osti_1571440,
title = {Evaluation of Cr-Tolerance of the Sr 2 Fe 1.5 Mo 0.5 O 6-δ Cathode for Solid Oxide Fuel Cells},
author = {Qiu, Peng and Lin, Jie and Lei, Libin and Yuan, Zhihao and Jia, Lichao and Li, Jian and Chen, Fanglin},
abstractNote = {Sr2Fe1.5Mo0.5O6-δ (SFM) is a promising electrode material recently studied for intermediate temperature solid oxide fuel cells (IT-SOFCs). In this work, Cr-tolerance of SFM has been systematically assessed. Due to the presence of Sr at the A-site, SFM has been found to be vulnerable to Cr species resulted from the metallic interconnects. The main product of Cr-poisoning for SFM is SrCrO4 deposited on the SFM surface. Furthermore, the Cr-poisoning mechanism of the SFM material has been evaluated both experimentally and thermodynamically. To enhance Cr-tolerance of SFM, LaCoO3-δ-infiltrated SFM (LC@SFM) has been developed. LC hinders the direct contact of SFM with Cr species and LC@SFM has significantly enhanced Cr-tolerance than SFM. This study provides valuable guidance for the wide application of SFM cathode in IT-SOFCs.},
doi = {10.1021/acsaem.9b01605},
journal = {ACS Applied Energy Materials},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {10}
}

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This content will become publicly available on October 7, 2020
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