Ni-gdc and ni-ysz electrodes operated in solid oxide electrolysis and fuel cell modes

Anna Sciazko; Takaaki Shimura; Yosuke Komatsu; Naoki Shikazono

doi:10.1299/jtst.2021jtst0013

Ni-gdc and ni-ysz electrodes operated in solid oxide electrolysis and fuel cell modes

Anna Sciazko, Takaaki Shimura, Yosuke Komatsu, Naoki Shikazono

Shibaura Institute of Technology

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

33 Citations (Scopus)

Abstract

In the present study, solid oxide cells (SOCs) were operated in the electricity generation (solid oxide fuel cell, SOFC) mode and the hydrogen production (solid oxide electrolysis cell, SOEC) mode. The fuel electrodes fabricated with nickel-gadolinia doped ceria (Ni-GDC) and nickel-yttria stabilized zirconia (Ni-YSZ) composites were investigated. The correlations between changes in the microstructure and degradation of electrochemical performance are discussed. The degradation mechanisms correlated with Ni phase were found to be similar for Ni-GDC and Ni-YSZ electrodes. On the other hand, the stability of the ceramic phase differs significantly between the two electrode materials.

Original language	English
Article number	JTST0013
Pages (from-to)	1-10
Number of pages	10
Journal	Journal of Thermal Science and Technology
Volume	16
Issue number	1
DOIs	https://doi.org/10.1299/jtst.2021jtst0013
Publication status	Published - 2021

Keywords

Degradation
Electrolysis
FIB-SEM
Fuel cell
Microstructure
Mixed conductivity
Ni-GDC electrode
Ni-YSZ electrode
Solid oxide cell

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Materials Science(all)
Instrumentation
Engineering (miscellaneous)

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10.1299/jtst.2021jtst0013

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title = "Ni-gdc and ni-ysz electrodes operated in solid oxide electrolysis and fuel cell modes",

abstract = "In the present study, solid oxide cells (SOCs) were operated in the electricity generation (solid oxide fuel cell, SOFC) mode and the hydrogen production (solid oxide electrolysis cell, SOEC) mode. The fuel electrodes fabricated with nickel-gadolinia doped ceria (Ni-GDC) and nickel-yttria stabilized zirconia (Ni-YSZ) composites were investigated. The correlations between changes in the microstructure and degradation of electrochemical performance are discussed. The degradation mechanisms correlated with Ni phase were found to be similar for Ni-GDC and Ni-YSZ electrodes. On the other hand, the stability of the ceramic phase differs significantly between the two electrode materials.",

keywords = "Degradation, Electrolysis, FIB-SEM, Fuel cell, Microstructure, Mixed conductivity, Ni-GDC electrode, Ni-YSZ electrode, Solid oxide cell",

author = "Anna Sciazko and Takaaki Shimura and Yosuke Komatsu and Naoki Shikazono",

note = "Funding Information: This work was partially supported by the New Energy and Industrial Technology Development Organization (NEDO), JSPS KAKENHI Grant Number JP18H05887 and by Nanofabrication Platform in Nanotechnology Platform Project sponsored by the Ministry of Education, Culture, Sport, Science and Technology (MEXT), Japan． Publisher Copyright: {\textcopyright} 2021, Japan Society of Mechanical Engineers. All rights reserved.",

year = "2021",

doi = "10.1299/jtst.2021jtst0013",

language = "English",

volume = "16",

pages = "1--10",

journal = "Journal of Thermal Science and Technology",

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AU - Sciazko, Anna

AU - Shimura, Takaaki

AU - Komatsu, Yosuke

AU - Shikazono, Naoki

N1 - Funding Information: This work was partially supported by the New Energy and Industrial Technology Development Organization (NEDO), JSPS KAKENHI Grant Number JP18H05887 and by Nanofabrication Platform in Nanotechnology Platform Project sponsored by the Ministry of Education, Culture, Sport, Science and Technology (MEXT), Japan． Publisher Copyright: © 2021, Japan Society of Mechanical Engineers. All rights reserved.

PY - 2021

Y1 - 2021

N2 - In the present study, solid oxide cells (SOCs) were operated in the electricity generation (solid oxide fuel cell, SOFC) mode and the hydrogen production (solid oxide electrolysis cell, SOEC) mode. The fuel electrodes fabricated with nickel-gadolinia doped ceria (Ni-GDC) and nickel-yttria stabilized zirconia (Ni-YSZ) composites were investigated. The correlations between changes in the microstructure and degradation of electrochemical performance are discussed. The degradation mechanisms correlated with Ni phase were found to be similar for Ni-GDC and Ni-YSZ electrodes. On the other hand, the stability of the ceramic phase differs significantly between the two electrode materials.

AB - In the present study, solid oxide cells (SOCs) were operated in the electricity generation (solid oxide fuel cell, SOFC) mode and the hydrogen production (solid oxide electrolysis cell, SOEC) mode. The fuel electrodes fabricated with nickel-gadolinia doped ceria (Ni-GDC) and nickel-yttria stabilized zirconia (Ni-YSZ) composites were investigated. The correlations between changes in the microstructure and degradation of electrochemical performance are discussed. The degradation mechanisms correlated with Ni phase were found to be similar for Ni-GDC and Ni-YSZ electrodes. On the other hand, the stability of the ceramic phase differs significantly between the two electrode materials.

KW - Degradation

KW - Electrolysis

KW - FIB-SEM

KW - Fuel cell

KW - Microstructure

KW - Mixed conductivity

KW - Ni-GDC electrode

KW - Ni-YSZ electrode

KW - Solid oxide cell

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ER -

Ni-gdc and ni-ysz electrodes operated in solid oxide electrolysis and fuel cell modes

Abstract

Keywords

ASJC Scopus subject areas

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