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

Qiu, Peng; Lin, Jie; Lei, Libin; Yuan, Zhihao; Jia, Lichao; Li, Jian; Chen, Fanglin

doi:10.1021/acsaem.9b01605

Title: Evaluation of Cr-Tolerance of the Sr ₂ Fe _1.5 Mo _0.5 O _6-δ Cathode for Solid Oxide Fuel Cells

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Abstract

Sr₂Fe_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 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, 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:

Qiu, Peng ^[1]; Lin, Jie ^[2]; Lei, Libin ^[3]; Yuan, Zhihao ^[4];

^[5]; Li, Jian ^[5];

^[2]

Univ. of South Carolina, Columbia, SC (United States); Huazhong Univ. of Science and Technology, Wuhan (China)
Univ. of South Carolina, Columbia, SC (United States)
Univ. of South Carolina, Columbia, SC (United States); Guangdong Univ. of Technology, Guangzhou, Guangdong (China)
Tianjin Univ. of Technology, Tianjin (China)
Huazhong Univ. of Science and Technology, Wuhan (China)

Publication Date:: Wed Sep 25 00:00:00 EDT 2019

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 Volume: 2; Journal Issue: 10; 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.

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                    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.  https://doi.org/10.1021/acsaem.9b01605

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                    Qiu, Peng, Lin, Jie, Lei, Libin, Yuan, Zhihao, Jia, Lichao, Li, Jian, and Chen, Fanglin. Wed .  
"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.  https://doi.org/10.1021/acsaem.9b01605.  https://www.osti.gov/servlets/purl/1571440.

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@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       = 10,

  volume       = 2,

  place        = {United States},

  year         = {Wed Sep 25 00:00:00 EDT 2019},

  month        = {Wed Sep 25 00:00:00 EDT 2019}

}

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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

Citation Formats

Title: Evaluation of Cr-Tolerance of the Sr ₂ Fe _1.5 Mo _0.5 O _6-δ Cathode for Solid Oxide Fuel Cells