(La0.8Sr0.2)0.98MnO3-δ-Zr0.92Y0.16O2-δ:PrOx for oxygen electrode supported solid oxide cells

Tianrang Yang; Shannon L. Kollasch; Jerren Grimes; Alan Xue; Scott A. Barnett

doi:10.1016/j.apcatb.2022.121114

(La_0.8Sr_0.2)_0.98MnO_3-δ-Zr_0.92Y_0.16O_2-δ:PrO_x for oxygen electrode supported solid oxide cells

Tianrang Yang, Shannon L. Kollasch, Jerren Grimes, Alan Xue, Scott A. Barnett^*

^*Corresponding author for this work

Materials Science and Engineering

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

13 Scopus citations

Abstract

(La_0.8Sr_0.2)_0.98MnO_3-δ (LSM)- Zr_0.92Y_0.16O_2-δ (YSZ) has been widely studied as the cathode for solid oxide fuel cells (SOFCs), but its low activity has been a cell performance limiting factor. Herein, LSM-YSZ:PrO_x composite is developed as an active electrocatalyst for both oxygen reduction and evolution reactions. A single step PrO_x infiltration into LSM-YSZ lowers the polarization resistance (R_p) 10–20 times depending on the test temperature. Distribution of relaxation times (DRT) calculation reveals that adding PrO_x affects surface exchange between adsorbed/desorbed oxygen and lattice oxygen, and oxygen dissociative adsorption/desorption. A symmetrical cell with a thin YSZ electrolyte sandwiched between thick LSM-YSZ:PrO_x electrode-supports is developed and its oxygen generation performance and stability are evaluated under various current densities and temperatures. Reversible solid oxide cell (ReSOC) performance is also reported for LSM-YSZ:PrO_x supported cells with the oxide fuel electrode Sr_0.95(Ti_0.3Fe_0.63Ni_0.07)O_3-δ (STFN).

Original language	English (US)
Article number	121114
Journal	Applied Catalysis B: Environmental
Volume	306
DOIs	https://doi.org/10.1016/j.apcatb.2022.121114
State	Published - Jun 5 2022

Keywords

Infiltration
LSM-YSZ
Oxygen electrode
Oxygen generators
Solid oxide cells

ASJC Scopus subject areas

Catalysis
Environmental Science(all)
Process Chemistry and Technology

Access to Document

10.1016/j.apcatb.2022.121114

Cite this

@article{5dce909417cf43b99ea2ef5f0ee7d3fa,

title = "(La0.8Sr0.2)0.98MnO3-δ-Zr0.92Y0.16O2-δ:PrOx for oxygen electrode supported solid oxide cells",

abstract = "(La0.8Sr0.2)0.98MnO3-δ (LSM)- Zr0.92Y0.16O2-δ (YSZ) has been widely studied as the cathode for solid oxide fuel cells (SOFCs), but its low activity has been a cell performance limiting factor. Herein, LSM-YSZ:PrOx composite is developed as an active electrocatalyst for both oxygen reduction and evolution reactions. A single step PrOx infiltration into LSM-YSZ lowers the polarization resistance (Rp) 10–20 times depending on the test temperature. Distribution of relaxation times (DRT) calculation reveals that adding PrOx affects surface exchange between adsorbed/desorbed oxygen and lattice oxygen, and oxygen dissociative adsorption/desorption. A symmetrical cell with a thin YSZ electrolyte sandwiched between thick LSM-YSZ:PrOx electrode-supports is developed and its oxygen generation performance and stability are evaluated under various current densities and temperatures. Reversible solid oxide cell (ReSOC) performance is also reported for LSM-YSZ:PrOx supported cells with the oxide fuel electrode Sr0.95(Ti0.3Fe0.63Ni0.07)O3-δ (STFN).",

keywords = "Infiltration, LSM-YSZ, Oxygen electrode, Oxygen generators, Solid oxide cells",

author = "Tianrang Yang and Kollasch, {Shannon L.} and Jerren Grimes and Alan Xue and Barnett, {Scott A.}",

note = "Funding Information: This work is supported by the Office of Energy Efficiency and Renewable Energy , US Department of Energy ( DE-EE0008437 ). Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = jun,

day = "5",

doi = "10.1016/j.apcatb.2022.121114",

language = "English (US)",

volume = "306",

journal = "Applied Catalysis B: Environmental",

issn = "0926-3373",

publisher = "Elsevier",

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TY - JOUR

T1 - (La0.8Sr0.2)0.98MnO3-δ-Zr0.92Y0.16O2-δ:PrOx for oxygen electrode supported solid oxide cells

AU - Yang, Tianrang

AU - Kollasch, Shannon L.

AU - Grimes, Jerren

AU - Xue, Alan

AU - Barnett, Scott A.

PY - 2022/6/5

Y1 - 2022/6/5

N2 - (La0.8Sr0.2)0.98MnO3-δ (LSM)- Zr0.92Y0.16O2-δ (YSZ) has been widely studied as the cathode for solid oxide fuel cells (SOFCs), but its low activity has been a cell performance limiting factor. Herein, LSM-YSZ:PrOx composite is developed as an active electrocatalyst for both oxygen reduction and evolution reactions. A single step PrOx infiltration into LSM-YSZ lowers the polarization resistance (Rp) 10–20 times depending on the test temperature. Distribution of relaxation times (DRT) calculation reveals that adding PrOx affects surface exchange between adsorbed/desorbed oxygen and lattice oxygen, and oxygen dissociative adsorption/desorption. A symmetrical cell with a thin YSZ electrolyte sandwiched between thick LSM-YSZ:PrOx electrode-supports is developed and its oxygen generation performance and stability are evaluated under various current densities and temperatures. Reversible solid oxide cell (ReSOC) performance is also reported for LSM-YSZ:PrOx supported cells with the oxide fuel electrode Sr0.95(Ti0.3Fe0.63Ni0.07)O3-δ (STFN).

AB - (La0.8Sr0.2)0.98MnO3-δ (LSM)- Zr0.92Y0.16O2-δ (YSZ) has been widely studied as the cathode for solid oxide fuel cells (SOFCs), but its low activity has been a cell performance limiting factor. Herein, LSM-YSZ:PrOx composite is developed as an active electrocatalyst for both oxygen reduction and evolution reactions. A single step PrOx infiltration into LSM-YSZ lowers the polarization resistance (Rp) 10–20 times depending on the test temperature. Distribution of relaxation times (DRT) calculation reveals that adding PrOx affects surface exchange between adsorbed/desorbed oxygen and lattice oxygen, and oxygen dissociative adsorption/desorption. A symmetrical cell with a thin YSZ electrolyte sandwiched between thick LSM-YSZ:PrOx electrode-supports is developed and its oxygen generation performance and stability are evaluated under various current densities and temperatures. Reversible solid oxide cell (ReSOC) performance is also reported for LSM-YSZ:PrOx supported cells with the oxide fuel electrode Sr0.95(Ti0.3Fe0.63Ni0.07)O3-δ (STFN).

KW - Infiltration

KW - LSM-YSZ

KW - Oxygen electrode

KW - Oxygen generators

KW - Solid oxide cells

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