LaNi0.6 Co0.4−x Fex O3−δ as air-side contact material for La0.3 Ca0.7 Fe0.7 Cr0.3 O3−δ reversible solid oxide fuel cell electrodes

Kalpana Singh; Paul Kwesi Addo; Venkataraman Thangadurai; Jesús Prado-Gonjal; Beatriz Molero-Sánchez

doi:10.3390/cryst12010073

LaNi_0.6 Co_0.4−x Fe_x O_3−δ as air-side contact material for La_0.3 Ca_0.7 Fe_0.7 Cr_0.3 O_3−δ reversible solid oxide fuel cell electrodes

Kalpana Singh, Paul Kwesi Addo, Venkataraman Thangadurai, Jesús Prado-Gonjal, Beatriz Molero-Sánchez^*

^*Corresponding author for this work

School of Chemistry

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

2 Citations (Scopus)

Abstract

The goal of the current work was to identify an air-side-optimized contact material for La_0.3 Ca_0.7 Fe_0.7 Cr_0.3 O_3−δ (LCFCr) electrodes and a Crofer22APU interconnect for use in reversible solid oxide fuel cells (RSOFCs). LaNi_0.6 Co_0.4−x Fe_x O₃ (x = 0–0.3) perovskite-type oxides were investigated in this work. The partial substitution of Co by Fe decreased the thermal expansion coefficient values (TEC) closer to the values of the LCFCr and Crofer 22 APU interconnects. The oxides were synthesized using the glycine–nitrate method and were characterized using X-ray thermodiffraction and 4-probe DC electrical conductivity measurements. Based on the materials characterization results from the Fe-doped oxides investigated here, the LaNi_0.6 Co_0.2 Fe_0.2 O_3−δ composition was selected as a good candidate for the contact material, as it exhibited an acceptable electrical conductivity value of 395 S·cm⁻¹ at 800^◦ C in air and a TEC value of 14.98 × 10⁻⁶ K⁻¹ (RT-900^◦ C).

Original language	English
Article number	73
Journal	Crystals
Volume	12
Issue number	1
DOIs	https://doi.org/10.3390/cryst12010073
Publication status	Published - 5 Jan 2022

Keywords

Air-side
ASR
Contact material
Crofer 22 APU interconnect
Perovskite
Reversible solid oxide fuel cell
Solid oxide electrolysis cell
Solid oxide fuel cell
Stack
Thermal expansion coefficient

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10.3390/cryst12010073Licence: CC BY

Cite this

@article{4bcceeeaef5147d98f6fe3c25817bd9f,

title = "LaNi0.6 Co0.4−x Fex O3−δ as air-side contact material for La0.3 Ca0.7 Fe0.7 Cr0.3 O3−δ reversible solid oxide fuel cell electrodes",

abstract = "The goal of the current work was to identify an air-side-optimized contact material for La0.3 Ca0.7 Fe0.7 Cr0.3 O3−δ (LCFCr) electrodes and a Crofer22APU interconnect for use in reversible solid oxide fuel cells (RSOFCs). LaNi0.6 Co0.4−x Fex O3 (x = 0–0.3) perovskite-type oxides were investigated in this work. The partial substitution of Co by Fe decreased the thermal expansion coefficient values (TEC) closer to the values of the LCFCr and Crofer 22 APU interconnects. The oxides were synthesized using the glycine–nitrate method and were characterized using X-ray thermodiffraction and 4-probe DC electrical conductivity measurements. Based on the materials characterization results from the Fe-doped oxides investigated here, the LaNi0.6 Co0.2 Fe0.2 O3−δ composition was selected as a good candidate for the contact material, as it exhibited an acceptable electrical conductivity value of 395 S·cm−1 at 800◦ C in air and a TEC value of 14.98 × 10−6 K−1 (RT-900◦ C).",

keywords = "Air-side, ASR, Contact material, Crofer 22 APU interconnect, Perovskite, Reversible solid oxide fuel cell, Solid oxide electrolysis cell, Solid oxide fuel cell, Stack, Thermal expansion coefficient",

author = "Kalpana Singh and Addo, {Paul Kwesi} and Venkataraman Thangadurai and Jes{\'u}s Prado-Gonjal and Beatriz Molero-S{\'a}nchez",

note = "SeeO2 Energy acknowledges the support from Mitacs for the concession of project IT19787 to support this work. K.S. thanks the funding from Mitacs at the University of Calgary. J.P.G is gratefully indebted to the Community of Madrid for the concession of project PR65/19-22459 under the Multiannual Agreement with Complutense University in line with the Program to Stimulate Research for Young Doctors within the context of the V PRICIT (Regional Program for Research and Technological Innovation). Furthermore, J.P.G. thanks the Spanish Ministry of Science and Innovation for granting the project PID2020-112848RB-C21.",

year = "2022",

month = jan,

day = "5",

doi = "10.3390/cryst12010073",

language = "English",

volume = "12",

journal = "Crystals",

issn = "2073-4352",

publisher = "MDPI AG",

number = "1",

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TY - JOUR

T1 - LaNi0.6 Co0.4−x Fex O3−δ as air-side contact material for La0.3 Ca0.7 Fe0.7 Cr0.3 O3−δ reversible solid oxide fuel cell electrodes

AU - Singh, Kalpana

AU - Addo, Paul Kwesi

AU - Thangadurai, Venkataraman

AU - Prado-Gonjal, Jesús

AU - Molero-Sánchez, Beatriz

N1 - SeeO2 Energy acknowledges the support from Mitacs for the concession of project IT19787 to support this work. K.S. thanks the funding from Mitacs at the University of Calgary. J.P.G is gratefully indebted to the Community of Madrid for the concession of project PR65/19-22459 under the Multiannual Agreement with Complutense University in line with the Program to Stimulate Research for Young Doctors within the context of the V PRICIT (Regional Program for Research and Technological Innovation). Furthermore, J.P.G. thanks the Spanish Ministry of Science and Innovation for granting the project PID2020-112848RB-C21.

PY - 2022/1/5

Y1 - 2022/1/5

N2 - The goal of the current work was to identify an air-side-optimized contact material for La0.3 Ca0.7 Fe0.7 Cr0.3 O3−δ (LCFCr) electrodes and a Crofer22APU interconnect for use in reversible solid oxide fuel cells (RSOFCs). LaNi0.6 Co0.4−x Fex O3 (x = 0–0.3) perovskite-type oxides were investigated in this work. The partial substitution of Co by Fe decreased the thermal expansion coefficient values (TEC) closer to the values of the LCFCr and Crofer 22 APU interconnects. The oxides were synthesized using the glycine–nitrate method and were characterized using X-ray thermodiffraction and 4-probe DC electrical conductivity measurements. Based on the materials characterization results from the Fe-doped oxides investigated here, the LaNi0.6 Co0.2 Fe0.2 O3−δ composition was selected as a good candidate for the contact material, as it exhibited an acceptable electrical conductivity value of 395 S·cm−1 at 800◦ C in air and a TEC value of 14.98 × 10−6 K−1 (RT-900◦ C).

AB - The goal of the current work was to identify an air-side-optimized contact material for La0.3 Ca0.7 Fe0.7 Cr0.3 O3−δ (LCFCr) electrodes and a Crofer22APU interconnect for use in reversible solid oxide fuel cells (RSOFCs). LaNi0.6 Co0.4−x Fex O3 (x = 0–0.3) perovskite-type oxides were investigated in this work. The partial substitution of Co by Fe decreased the thermal expansion coefficient values (TEC) closer to the values of the LCFCr and Crofer 22 APU interconnects. The oxides were synthesized using the glycine–nitrate method and were characterized using X-ray thermodiffraction and 4-probe DC electrical conductivity measurements. Based on the materials characterization results from the Fe-doped oxides investigated here, the LaNi0.6 Co0.2 Fe0.2 O3−δ composition was selected as a good candidate for the contact material, as it exhibited an acceptable electrical conductivity value of 395 S·cm−1 at 800◦ C in air and a TEC value of 14.98 × 10−6 K−1 (RT-900◦ C).

KW - Air-side

KW - ASR

KW - Contact material

KW - Crofer 22 APU interconnect

KW - Perovskite

KW - Reversible solid oxide fuel cell

KW - Solid oxide electrolysis cell

KW - Solid oxide fuel cell

KW - Stack

KW - Thermal expansion coefficient

U2 - 10.3390/cryst12010073

DO - 10.3390/cryst12010073

M3 - Article

AN - SCOPUS:85122782790

SN - 2073-4352

VL - 12

JO - Crystals

JF - Crystals

IS - 1

M1 - 73

ER -