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Title: Surface Regulating of a Double–Perovskite Electrode for Protonic Ceramic Fuel Cells to Enhance Oxygen Reduction Activity and Contaminants Poisoning Tolerance

Abstract

Abstract Protonic ceramic fuel cells (PCFCs) are one of the most efficient energy conversion devices. However, the performance of current PCFCs is greatly limited by the sluggish oxygen reduction reaction (ORR) kinetics and the fast degradation of the cathode due to contaminants poisoning (such as Cr species and steam). Here, a surface regulation of a double perovskite PrBa 0.5 Sr 0.5 Co 1.5 Fe 0.5 O 5+ δ (PBSCF) cathode by a Pr 0.9 Fe 0.7 Co 0.3 O 3 (PFC) catalyst coating to enhance the ORR activity and stability is reported. When tested in direct contact with Cr in the air with 3% H 2 O at 650 °C, the polarization resistance ( R p ) of the PFC coated PBSCF (PFC‐PBSCF) electrode increases from ≈0.39 to 0.45 Ω cm 2 after 100 h operation; in contrast, the R p of a PBSCF electrode increases from 0.63 to 0.82 Ω cm 2 . Further, a PCFC with the PFC‐PBSCF cathode demonstrates an excellent peak power density (≈1.08 W cm –2 at 650 °C) and significantly enhanced durability (degradation rate of 0.03% h −1 ), much better than those of the cells with a PBSCF cathode (≈0.75 W cm –2 andmore » degradation rate of 0.12% h −1 ). Raman spectroscopy and density functional theory calculations indicate that the PFC catalyst coating diminishes the formation of Cr species, such as (Ba 1‐ x Sr x )CrO 4 , on the cathode surface.« less

Authors:
 [1];  [1];  [1];  [2];  [3];  [1];  [4];  [2]; ORCiD logo [1]
  1. South China Univ. of Technology (SCUT), Guangzhou (China)
  2. Georgia Inst. of Technology, Atlanta, GA (United States)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. National Yang Ming Chiao Tung University, Tainan (Taiwan)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Fuel Cell Technologies Office; National Natural Science Foundation of China (NSFC); Natural Science Foundation of Guangdong Province; Pearl River Talent Recruitment Program; Ministry of Science and Technology (MOST); USDOE
OSTI Identifier:
1873654
Alternate Identifier(s):
OSTI ID: 1870185
Report Number(s):
BNL-223097-2022-JAAM
Journal ID: ISSN 1614-6832
Grant/Contract Number:  
SC0012704; 22005105; 22179039; 2021A1515010395; 2019QN01C693; 2021ZT09L392; 110-2221-E-A49-017-MY3
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Energy Materials
Additional Journal Information:
Journal Volume: 12; Journal Issue: 26; Journal ID: ISSN 1614-6832
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; protonic ceramic fuel cells; Cr tolerance; advanced energy; durability; oxygen reduction reaction; surface modification

Citation Formats

Zhang, Hua, Xu, Kang, He, Fan, Zhou, Yucun, Sasaki, Kotaro, Zhao, Bote, Choi, YongMan, Liu, Meilin, and Chen, Yu. Surface Regulating of a Double–Perovskite Electrode for Protonic Ceramic Fuel Cells to Enhance Oxygen Reduction Activity and Contaminants Poisoning Tolerance. United States: N. p., 2022. Web. doi:10.1002/aenm.202200761.
Zhang, Hua, Xu, Kang, He, Fan, Zhou, Yucun, Sasaki, Kotaro, Zhao, Bote, Choi, YongMan, Liu, Meilin, & Chen, Yu. Surface Regulating of a Double–Perovskite Electrode for Protonic Ceramic Fuel Cells to Enhance Oxygen Reduction Activity and Contaminants Poisoning Tolerance. United States. https://doi.org/10.1002/aenm.202200761
Zhang, Hua, Xu, Kang, He, Fan, Zhou, Yucun, Sasaki, Kotaro, Zhao, Bote, Choi, YongMan, Liu, Meilin, and Chen, Yu. Fri . "Surface Regulating of a Double–Perovskite Electrode for Protonic Ceramic Fuel Cells to Enhance Oxygen Reduction Activity and Contaminants Poisoning Tolerance". United States. https://doi.org/10.1002/aenm.202200761. https://www.osti.gov/servlets/purl/1873654.
@article{osti_1873654,
title = {Surface Regulating of a Double–Perovskite Electrode for Protonic Ceramic Fuel Cells to Enhance Oxygen Reduction Activity and Contaminants Poisoning Tolerance},
author = {Zhang, Hua and Xu, Kang and He, Fan and Zhou, Yucun and Sasaki, Kotaro and Zhao, Bote and Choi, YongMan and Liu, Meilin and Chen, Yu},
abstractNote = {Abstract Protonic ceramic fuel cells (PCFCs) are one of the most efficient energy conversion devices. However, the performance of current PCFCs is greatly limited by the sluggish oxygen reduction reaction (ORR) kinetics and the fast degradation of the cathode due to contaminants poisoning (such as Cr species and steam). Here, a surface regulation of a double perovskite PrBa 0.5 Sr 0.5 Co 1.5 Fe 0.5 O 5+ δ (PBSCF) cathode by a Pr 0.9 Fe 0.7 Co 0.3 O 3 (PFC) catalyst coating to enhance the ORR activity and stability is reported. When tested in direct contact with Cr in the air with 3% H 2 O at 650 °C, the polarization resistance ( R p ) of the PFC coated PBSCF (PFC‐PBSCF) electrode increases from ≈0.39 to 0.45 Ω cm 2 after 100 h operation; in contrast, the R p of a PBSCF electrode increases from 0.63 to 0.82 Ω cm 2 . Further, a PCFC with the PFC‐PBSCF cathode demonstrates an excellent peak power density (≈1.08 W cm –2 at 650 °C) and significantly enhanced durability (degradation rate of 0.03% h −1 ), much better than those of the cells with a PBSCF cathode (≈0.75 W cm –2 and degradation rate of 0.12% h −1 ). Raman spectroscopy and density functional theory calculations indicate that the PFC catalyst coating diminishes the formation of Cr species, such as (Ba 1‐ x Sr x )CrO 4 , on the cathode surface.},
doi = {10.1002/aenm.202200761},
journal = {Advanced Energy Materials},
number = 26,
volume = 12,
place = {United States},
year = {Fri May 27 00:00:00 EDT 2022},
month = {Fri May 27 00:00:00 EDT 2022}
}

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