Phase Field Modelling of Microstructural Changes in NI/YSZ Solid Oxide Electrolysis Cell Electrodes

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Solid oxide cells (SOC) are electrochemical devices that can operate efficiently both in fuel cell (solid oxide fuel cell, SOFC) and electrolysis mode (solid oxide electrolysis cell, SOEC). However, long-term performance degradation hinder the widespread commercialization of this technology. Nickel coarsening is a major cause of the decrease of the cells’ performance. Therefore, investigating and quantifying effects of nickel coarsening on the microstructural evolution in SOCs is crucial to understand the degradation processes occurring during operation.
Focused-ion-beam scanning electron microscopy (FIB-SEM) tomography and phase field (PF) modelling are used to investigate the microstructure evolution of Ni/Yttria-Stabilized Zirconia (YSZ) SOC fuel electrodes.
A cell, tested as part of a 25 cells stack for 9000 hours, and a reference cell (never operated) are reconstructed using FIB-SEM tomography. Microstructural parameters were calculated on the two cells showing that the percolated triple phase boundary (TPB) length in the cell decreases from 1.85 μm/μm3 for the reference cell to only 1.01 μm/μm3 for the long-term tested one.
Phase field simulations were run on the reference cell geometry and microstructural parameters such as particle size distribution (PSD), TPB length and surface areas are computed and quantified on the simulated volumes. A trend of decreasing percolated TPB length with time is observed in the simulations. The numerical results are used to investigate the effects of nickel coarsening as well as to obtain information on the kinetics of the phenomenon.
Original languageEnglish
Title of host publicationProceeding of the 42nd International Conference on Advanced Ceramics and Composites
PublisherAmerican Ceramic Society
Publication date2019
Pages165-176
Chapter16
ISBN (Print)9781119543268
DOIs
Publication statusPublished - 2019
SeriesCeramic Engineering and Science Proceedings
Number2
Volume39
ISSN0196-6219

Cite this

Trini, M., De Angelis, S., Jørgensen, P. S., Hauch, A., Chen, M., & Hendriksen, P. V. (2019). Phase Field Modelling of Microstructural Changes in NI/YSZ Solid Oxide Electrolysis Cell Electrodes. In Proceeding of the 42nd International Conference on Advanced Ceramics and Composites (pp. 165-176). American Ceramic Society. Ceramic Engineering and Science Proceedings, No. 2, Vol.. 39 https://doi.org/10.1002/9781119543343.ch16
Trini, M. ; De Angelis, S. ; Jørgensen, P. S. ; Hauch, A. ; Chen, M. ; Hendriksen, P. V. / Phase Field Modelling of Microstructural Changes in NI/YSZ Solid Oxide Electrolysis Cell Electrodes. Proceeding of the 42nd International Conference on Advanced Ceramics and Composites. American Ceramic Society, 2019. pp. 165-176 (Ceramic Engineering and Science Proceedings; No. 2, Vol. 39).
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title = "Phase Field Modelling of Microstructural Changes in NI/YSZ Solid Oxide Electrolysis Cell Electrodes",
abstract = "Solid oxide cells (SOC) are electrochemical devices that can operate efficiently both in fuel cell (solid oxide fuel cell, SOFC) and electrolysis mode (solid oxide electrolysis cell, SOEC). However, long-term performance degradation hinder the widespread commercialization of this technology. Nickel coarsening is a major cause of the decrease of the cells’ performance. Therefore, investigating and quantifying effects of nickel coarsening on the microstructural evolution in SOCs is crucial to understand the degradation processes occurring during operation.Focused-ion-beam scanning electron microscopy (FIB-SEM) tomography and phase field (PF) modelling are used to investigate the microstructure evolution of Ni/Yttria-Stabilized Zirconia (YSZ) SOC fuel electrodes.A cell, tested as part of a 25 cells stack for 9000 hours, and a reference cell (never operated) are reconstructed using FIB-SEM tomography. Microstructural parameters were calculated on the two cells showing that the percolated triple phase boundary (TPB) length in the cell decreases from 1.85 μm/μm3 for the reference cell to only 1.01 μm/μm3 for the long-term tested one.Phase field simulations were run on the reference cell geometry and microstructural parameters such as particle size distribution (PSD), TPB length and surface areas are computed and quantified on the simulated volumes. A trend of decreasing percolated TPB length with time is observed in the simulations. The numerical results are used to investigate the effects of nickel coarsening as well as to obtain information on the kinetics of the phenomenon.",
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Trini, M, De Angelis, S, Jørgensen, PS, Hauch, A, Chen, M & Hendriksen, PV 2019, Phase Field Modelling of Microstructural Changes in NI/YSZ Solid Oxide Electrolysis Cell Electrodes. in Proceeding of the 42nd International Conference on Advanced Ceramics and Composites. American Ceramic Society, Ceramic Engineering and Science Proceedings, no. 2, vol. 39, pp. 165-176. https://doi.org/10.1002/9781119543343.ch16

Phase Field Modelling of Microstructural Changes in NI/YSZ Solid Oxide Electrolysis Cell Electrodes. / Trini, M.; De Angelis, S.; Jørgensen, P. S.; Hauch, A.; Chen, M.; Hendriksen, P. V.

Proceeding of the 42nd International Conference on Advanced Ceramics and Composites. American Ceramic Society, 2019. p. 165-176 (Ceramic Engineering and Science Proceedings; No. 2, Vol. 39).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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N2 - Solid oxide cells (SOC) are electrochemical devices that can operate efficiently both in fuel cell (solid oxide fuel cell, SOFC) and electrolysis mode (solid oxide electrolysis cell, SOEC). However, long-term performance degradation hinder the widespread commercialization of this technology. Nickel coarsening is a major cause of the decrease of the cells’ performance. Therefore, investigating and quantifying effects of nickel coarsening on the microstructural evolution in SOCs is crucial to understand the degradation processes occurring during operation.Focused-ion-beam scanning electron microscopy (FIB-SEM) tomography and phase field (PF) modelling are used to investigate the microstructure evolution of Ni/Yttria-Stabilized Zirconia (YSZ) SOC fuel electrodes.A cell, tested as part of a 25 cells stack for 9000 hours, and a reference cell (never operated) are reconstructed using FIB-SEM tomography. Microstructural parameters were calculated on the two cells showing that the percolated triple phase boundary (TPB) length in the cell decreases from 1.85 μm/μm3 for the reference cell to only 1.01 μm/μm3 for the long-term tested one.Phase field simulations were run on the reference cell geometry and microstructural parameters such as particle size distribution (PSD), TPB length and surface areas are computed and quantified on the simulated volumes. A trend of decreasing percolated TPB length with time is observed in the simulations. The numerical results are used to investigate the effects of nickel coarsening as well as to obtain information on the kinetics of the phenomenon.

AB - Solid oxide cells (SOC) are electrochemical devices that can operate efficiently both in fuel cell (solid oxide fuel cell, SOFC) and electrolysis mode (solid oxide electrolysis cell, SOEC). However, long-term performance degradation hinder the widespread commercialization of this technology. Nickel coarsening is a major cause of the decrease of the cells’ performance. Therefore, investigating and quantifying effects of nickel coarsening on the microstructural evolution in SOCs is crucial to understand the degradation processes occurring during operation.Focused-ion-beam scanning electron microscopy (FIB-SEM) tomography and phase field (PF) modelling are used to investigate the microstructure evolution of Ni/Yttria-Stabilized Zirconia (YSZ) SOC fuel electrodes.A cell, tested as part of a 25 cells stack for 9000 hours, and a reference cell (never operated) are reconstructed using FIB-SEM tomography. Microstructural parameters were calculated on the two cells showing that the percolated triple phase boundary (TPB) length in the cell decreases from 1.85 μm/μm3 for the reference cell to only 1.01 μm/μm3 for the long-term tested one.Phase field simulations were run on the reference cell geometry and microstructural parameters such as particle size distribution (PSD), TPB length and surface areas are computed and quantified on the simulated volumes. A trend of decreasing percolated TPB length with time is observed in the simulations. The numerical results are used to investigate the effects of nickel coarsening as well as to obtain information on the kinetics of the phenomenon.

U2 - 10.1002/9781119543343.ch16

DO - 10.1002/9781119543343.ch16

M3 - Article in proceedings

SN - 9781119543268

SP - 165

EP - 176

BT - Proceeding of the 42nd International Conference on Advanced Ceramics and Composites

PB - American Ceramic Society

ER -

Trini M, De Angelis S, Jørgensen PS, Hauch A, Chen M, Hendriksen PV. Phase Field Modelling of Microstructural Changes in NI/YSZ Solid Oxide Electrolysis Cell Electrodes. In Proceeding of the 42nd International Conference on Advanced Ceramics and Composites. American Ceramic Society. 2019. p. 165-176. (Ceramic Engineering and Science Proceedings; No. 2, Vol. 39). https://doi.org/10.1002/9781119543343.ch16