The effects of sintering temperature and current contacting layer on the performance of lanthanum nickelate electrodes in Solid Oxide Fuel Cells

Chris Harrison; Bernardo Jordao Moreira Sarruf; D Klotz; Peter Slater; Robert Steinberger-Wilckens

doi:10.1016/j.ssi.2023.116386

The effects of sintering temperature and current contacting layer on the performance of lanthanum nickelate electrodes in Solid Oxide Fuel Cells

Chris Harrison^*, Bernardo Jordao Moreira Sarruf, D Klotz, Peter Slater, Robert Steinberger-Wilckens

^*Corresponding author for this work

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

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Abstract

The Ruddlesden-Popper phase La₂NiO_4+δ (LNO214) has received a significant level of research attention with respect to its employment as a Solid Oxide Fuel Cell cathode material. However, it is known that there are many factors that are capable of influencing the performance of this phase when utilised in this role. One such factor that can impact on electrode behaviour is the choice of sintering temperature. In this paper, a study of this effect is detailed. This is achieved via the use of both symmetrical and single cell testing configurations, with additional investigation provided by ex-situ analysis. It is shown that a sizeable improvement in electrode performance can be achieved via an increase in sintering temperature. This is despite observations on the reactivity between LNO214 and the contact electrolyte material Ce_0.9Gd_0.1O_2-δ. Further, it is also demonstrated that the addition of a noble metal contacting layer can dramatically improve the performance of an LNO214 electrode. In comparison, the impact of a contacting layer on a state-of-the-art La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ composition is shown to be relatively minor. This has implications towards SOFC testing methodologies given the widespread employment of noble metal contacting pastes.

Original language	English
Article number	116386
Number of pages	13
Journal	Solid State Ionics
Volume	403
Early online date	24 Oct 2023
DOIs	https://doi.org/10.1016/j.ssi.2023.116386
Publication status	Published - 15 Dec 2023

Bibliographical note

Funding:
This work was supported by the EPSRC via the Centre for Doctoral Training on Fuel Cells and their Fuels, grant reference EP/L015749/1, and the JUICED Hub Grant, ref. EP/R023662/1. Additionally, Dr. Sarruf acknowledges the funding received from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 101032423.

Keywords

Solid oxide fuel cell
SOFC
Cathode
La2NiO4+δ
Sintering temperature

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10.1016/j.ssi.2023.116386Licence: Creative Commons: Attribution (CC BY)

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FleXelL - Reversible solid oxide cell development for the utilisation of alternative fuels and hydrogen strategic production
Steinberger-Wilckens, R. & Jordao Moreira Sarruf, B.
European Commission
12/10/21 → 11/10/23
Project: EU
ISCF Wave 1: (THe JUICED Hub [Joing University Industry Consortium for Energy (Materials)]) : UCL Lead
Ding, Y., Slater, P. & Steinberger-Wilckens, R.
Engineering & Physical Science Research Council
8/11/17 → 6/11/21
Project: Research Councils

Cite this

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title = "The effects of sintering temperature and current contacting layer on the performance of lanthanum nickelate electrodes in Solid Oxide Fuel Cells",

abstract = "The Ruddlesden-Popper phase La2NiO4+δ (LNO214) has received a significant level of research attention with respect to its employment as a Solid Oxide Fuel Cell cathode material. However, it is known that there are many factors that are capable of influencing the performance of this phase when utilised in this role. One such factor that can impact on electrode behaviour is the choice of sintering temperature. In this paper, a study of this effect is detailed. This is achieved via the use of both symmetrical and single cell testing configurations, with additional investigation provided by ex-situ analysis. It is shown that a sizeable improvement in electrode performance can be achieved via an increase in sintering temperature. This is despite observations on the reactivity between LNO214 and the contact electrolyte material Ce0.9Gd0.1O2-δ. Further, it is also demonstrated that the addition of a noble metal contacting layer can dramatically improve the performance of an LNO214 electrode. In comparison, the impact of a contacting layer on a state-of-the-art La0.6Sr0.4Co0.2Fe0.8O3-δ composition is shown to be relatively minor. This has implications towards SOFC testing methodologies given the widespread employment of noble metal contacting pastes.",

keywords = "Solid oxide fuel cell, SOFC, Cathode, La2NiO4+δ, Sintering temperature",

author = "Chris Harrison and {Jordao Moreira Sarruf}, Bernardo and D Klotz and Peter Slater and Robert Steinberger-Wilckens",

note = "Funding: This work was supported by the EPSRC via the Centre for Doctoral Training on Fuel Cells and their Fuels, grant reference EP/L015749/1, and the JUICED Hub Grant, ref. EP/R023662/1. Additionally, Dr. Sarruf acknowledges the funding received from the European Union's Horizon 2020 research and innovation programme under the Marie Sk{\l}odowska-Curie grant agreement No 101032423.",

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doi = "10.1016/j.ssi.2023.116386",

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AU - Harrison, Chris

AU - Jordao Moreira Sarruf, Bernardo

AU - Klotz, D

AU - Slater, Peter

AU - Steinberger-Wilckens, Robert

N1 - Funding: This work was supported by the EPSRC via the Centre for Doctoral Training on Fuel Cells and their Fuels, grant reference EP/L015749/1, and the JUICED Hub Grant, ref. EP/R023662/1. Additionally, Dr. Sarruf acknowledges the funding received from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 101032423.

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N2 - The Ruddlesden-Popper phase La2NiO4+δ (LNO214) has received a significant level of research attention with respect to its employment as a Solid Oxide Fuel Cell cathode material. However, it is known that there are many factors that are capable of influencing the performance of this phase when utilised in this role. One such factor that can impact on electrode behaviour is the choice of sintering temperature. In this paper, a study of this effect is detailed. This is achieved via the use of both symmetrical and single cell testing configurations, with additional investigation provided by ex-situ analysis. It is shown that a sizeable improvement in electrode performance can be achieved via an increase in sintering temperature. This is despite observations on the reactivity between LNO214 and the contact electrolyte material Ce0.9Gd0.1O2-δ. Further, it is also demonstrated that the addition of a noble metal contacting layer can dramatically improve the performance of an LNO214 electrode. In comparison, the impact of a contacting layer on a state-of-the-art La0.6Sr0.4Co0.2Fe0.8O3-δ composition is shown to be relatively minor. This has implications towards SOFC testing methodologies given the widespread employment of noble metal contacting pastes.

AB - The Ruddlesden-Popper phase La2NiO4+δ (LNO214) has received a significant level of research attention with respect to its employment as a Solid Oxide Fuel Cell cathode material. However, it is known that there are many factors that are capable of influencing the performance of this phase when utilised in this role. One such factor that can impact on electrode behaviour is the choice of sintering temperature. In this paper, a study of this effect is detailed. This is achieved via the use of both symmetrical and single cell testing configurations, with additional investigation provided by ex-situ analysis. It is shown that a sizeable improvement in electrode performance can be achieved via an increase in sintering temperature. This is despite observations on the reactivity between LNO214 and the contact electrolyte material Ce0.9Gd0.1O2-δ. Further, it is also demonstrated that the addition of a noble metal contacting layer can dramatically improve the performance of an LNO214 electrode. In comparison, the impact of a contacting layer on a state-of-the-art La0.6Sr0.4Co0.2Fe0.8O3-δ composition is shown to be relatively minor. This has implications towards SOFC testing methodologies given the widespread employment of noble metal contacting pastes.

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KW - Cathode

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The effects of sintering temperature and current contacting layer on the performance of lanthanum nickelate electrodes in Solid Oxide Fuel Cells

Abstract

Bibliographical note

Keywords

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Projects

FleXelL - Reversible solid oxide cell development for the utilisation of alternative fuels and hydrogen strategic production

ISCF Wave 1: (THe JUICED Hub [Joing University Industry Consortium for Energy (Materials)]) : UCL Lead

Cite this