Evaluation of the CO2 tolerant cathode for solid oxide fuel cells: Praseodymium oxysulfates/Ba0.5Sr0.5Co0.8Fe0.2O3-δ

Tao Yang; Chao Su; Wei Wang; Lijian Meng; Jiguang Deng; Yu Liu; Shambhu Singh Rathore; Zongping Shao

doi:10.1016/j.apsusc.2018.07.174

Evaluation of the CO₂ tolerant cathode for solid oxide fuel cells: Praseodymium oxysulfates/Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ

Tao Yang, Chao Su, Wei Wang, Lijian Meng, Jiguang Deng, Yu Liu, Shambhu Singh Rathore, Zongping Shao

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

An effective praseodymium oxysulfate/Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ composite cathode with high stability in 10% CO₂/air was investigated. The addition of 50 vol.% of the praseodymium oxysulfate shows much better tolerance to CO₂, and reduced the polarization resistance of the cathode to 1/3 comparing with that of Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ (BSCF). The CO₂–temperature programmed desorption (TPD) and the electrochemical impedance spectroscopy (EIS) proved the effectiveness of the praseodymium oxysulfate phase to reduce the electrode resistance and to improve the CO₂ resistance. The coefficient thermal expansion (CTE) rate along with the different volume percentage of praseodymium oxysulfate was also measured and it was found that the praseodymium oxysulfate helps to regulate the total CTE of the composite to match with doped-ceria electrolyte. It is proposed the higher acidity of Pr^3+/4+ cations inhibited the reaction of alkaline earth metal oxide to form carbonates on the surface of the BSCF particles. The above results proved praseodymium oxysulfate/Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ to be a highly active and stable cathode for solid oxide fuel cells.

Original language	English
Pages (from-to)	10-15
Number of pages	6
Journal	Applied Surface Science
Volume	472
DOIs	https://doi.org/10.1016/j.apsusc.2018.07.174
State	Published - 1 Apr 2019
Externally published	Yes

Keywords

BaSrCoFeO
CO poisoning
Composite cathode
Electrochemical impedance
PrOSO
Solid oxide fuel cell

Access to Document

10.1016/j.apsusc.2018.07.174

Cite this

@article{d140b766b5554d0faee6e56265b63aa4,

title = "Evaluation of the CO2 tolerant cathode for solid oxide fuel cells: Praseodymium oxysulfates/Ba0.5Sr0.5Co0.8Fe0.2O3-δ",

abstract = "An effective praseodymium oxysulfate/Ba0.5Sr0.5Co0.8Fe0.2O3-δ composite cathode with high stability in 10% CO2/air was investigated. The addition of 50 vol.% of the praseodymium oxysulfate shows much better tolerance to CO2, and reduced the polarization resistance of the cathode to 1/3 comparing with that of Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF). The CO2–temperature programmed desorption (TPD) and the electrochemical impedance spectroscopy (EIS) proved the effectiveness of the praseodymium oxysulfate phase to reduce the electrode resistance and to improve the CO2 resistance. The coefficient thermal expansion (CTE) rate along with the different volume percentage of praseodymium oxysulfate was also measured and it was found that the praseodymium oxysulfate helps to regulate the total CTE of the composite to match with doped-ceria electrolyte. It is proposed the higher acidity of Pr3+/4+ cations inhibited the reaction of alkaline earth metal oxide to form carbonates on the surface of the BSCF particles. The above results proved praseodymium oxysulfate/Ba0.5Sr0.5Co0.8Fe0.2O3-δ to be a highly active and stable cathode for solid oxide fuel cells.",

keywords = "BaSrCoFeO, CO poisoning, Composite cathode, Electrochemical impedance, PrOSO, Solid oxide fuel cell",

author = "Tao Yang and Chao Su and Wei Wang and Lijian Meng and Jiguang Deng and Yu Liu and Rathore, {Shambhu Singh} and Zongping Shao",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2019",

month = apr,

day = "1",

doi = "10.1016/j.apsusc.2018.07.174",

language = "英语",

volume = "472",

pages = "10--15",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Evaluation of the CO2 tolerant cathode for solid oxide fuel cells

T2 - Praseodymium oxysulfates/Ba0.5Sr0.5Co0.8Fe0.2O3-δ

AU - Yang, Tao

AU - Su, Chao

AU - Wang, Wei

AU - Meng, Lijian

AU - Deng, Jiguang

AU - Liu, Yu

AU - Rathore, Shambhu Singh

AU - Shao, Zongping

PY - 2019/4/1

Y1 - 2019/4/1

N2 - An effective praseodymium oxysulfate/Ba0.5Sr0.5Co0.8Fe0.2O3-δ composite cathode with high stability in 10% CO2/air was investigated. The addition of 50 vol.% of the praseodymium oxysulfate shows much better tolerance to CO2, and reduced the polarization resistance of the cathode to 1/3 comparing with that of Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF). The CO2–temperature programmed desorption (TPD) and the electrochemical impedance spectroscopy (EIS) proved the effectiveness of the praseodymium oxysulfate phase to reduce the electrode resistance and to improve the CO2 resistance. The coefficient thermal expansion (CTE) rate along with the different volume percentage of praseodymium oxysulfate was also measured and it was found that the praseodymium oxysulfate helps to regulate the total CTE of the composite to match with doped-ceria electrolyte. It is proposed the higher acidity of Pr3+/4+ cations inhibited the reaction of alkaline earth metal oxide to form carbonates on the surface of the BSCF particles. The above results proved praseodymium oxysulfate/Ba0.5Sr0.5Co0.8Fe0.2O3-δ to be a highly active and stable cathode for solid oxide fuel cells.

AB - An effective praseodymium oxysulfate/Ba0.5Sr0.5Co0.8Fe0.2O3-δ composite cathode with high stability in 10% CO2/air was investigated. The addition of 50 vol.% of the praseodymium oxysulfate shows much better tolerance to CO2, and reduced the polarization resistance of the cathode to 1/3 comparing with that of Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF). The CO2–temperature programmed desorption (TPD) and the electrochemical impedance spectroscopy (EIS) proved the effectiveness of the praseodymium oxysulfate phase to reduce the electrode resistance and to improve the CO2 resistance. The coefficient thermal expansion (CTE) rate along with the different volume percentage of praseodymium oxysulfate was also measured and it was found that the praseodymium oxysulfate helps to regulate the total CTE of the composite to match with doped-ceria electrolyte. It is proposed the higher acidity of Pr3+/4+ cations inhibited the reaction of alkaline earth metal oxide to form carbonates on the surface of the BSCF particles. The above results proved praseodymium oxysulfate/Ba0.5Sr0.5Co0.8Fe0.2O3-δ to be a highly active and stable cathode for solid oxide fuel cells.

KW - BaSrCoFeO

KW - CO poisoning

KW - Composite cathode

KW - Electrochemical impedance

KW - PrOSO

KW - Solid oxide fuel cell

UR - http://www.scopus.com/inward/record.url?scp=85050598441&partnerID=8YFLogxK

U2 - 10.1016/j.apsusc.2018.07.174

DO - 10.1016/j.apsusc.2018.07.174

M3 - 文章

AN - SCOPUS:85050598441

SN - 0169-4332

VL - 472

SP - 10

EP - 15

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Evaluation of the CO₂ tolerant cathode for solid oxide fuel cells: Praseodymium oxysulfates/Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this