H2-H2O-Ni-YSZ electrode performance effect of segregation to the interface

Karin Vels Hansen; Kion Norrman; Mogens Mogensen

doi:10.1149/1.1779630

H₂-H₂O-Ni-YSZ electrode performance effect of segregation to the interface

Karin Vels Hansen^*, Kion Norrman, Mogens Mogensen

^*Corresponding author for this work

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

94 Scopus citations

Abstract

The electrochemical properties of the interface between Ni and yttria-stabilized zirconia (YSZ) in the H₂-H₂O-Ni-YSZ electrode have been investigated in order to obtain knowledge on the effect of segregation of impurities to the electrode-electrolyte interface on performance. Even for a relatively pure nickel electrode, a film of impurities was found at the contact between Ni and YSZ and on the surface of YSZ. Impurity ridges were also found at the three-phase boundary. Impurities in these locations all have the potential of impeding processes and reactions at the electrode-electrolyte interface. The pure electrodes showed a lower resistance compared to most electrodes discussed in the literature.

Original language	English
Pages (from-to)	A1436-A1444
Journal	Journal of the Electrochemical Society
Volume	151
Issue number	9
DOIs	https://doi.org/10.1149/1.1779630
State	Published - 2004
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1149/1.1779630

Cite this

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abstract = "The electrochemical properties of the interface between Ni and yttria-stabilized zirconia (YSZ) in the H2-H2O-Ni-YSZ electrode have been investigated in order to obtain knowledge on the effect of segregation of impurities to the electrode-electrolyte interface on performance. Even for a relatively pure nickel electrode, a film of impurities was found at the contact between Ni and YSZ and on the surface of YSZ. Impurity ridges were also found at the three-phase boundary. Impurities in these locations all have the potential of impeding processes and reactions at the electrode-electrolyte interface. The pure electrodes showed a lower resistance compared to most electrodes discussed in the literature.",

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AU - Hansen, Karin Vels

AU - Norrman, Kion

AU - Mogensen, Mogens

PY - 2004

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N2 - The electrochemical properties of the interface between Ni and yttria-stabilized zirconia (YSZ) in the H2-H2O-Ni-YSZ electrode have been investigated in order to obtain knowledge on the effect of segregation of impurities to the electrode-electrolyte interface on performance. Even for a relatively pure nickel electrode, a film of impurities was found at the contact between Ni and YSZ and on the surface of YSZ. Impurity ridges were also found at the three-phase boundary. Impurities in these locations all have the potential of impeding processes and reactions at the electrode-electrolyte interface. The pure electrodes showed a lower resistance compared to most electrodes discussed in the literature.

AB - The electrochemical properties of the interface between Ni and yttria-stabilized zirconia (YSZ) in the H2-H2O-Ni-YSZ electrode have been investigated in order to obtain knowledge on the effect of segregation of impurities to the electrode-electrolyte interface on performance. Even for a relatively pure nickel electrode, a film of impurities was found at the contact between Ni and YSZ and on the surface of YSZ. Impurity ridges were also found at the three-phase boundary. Impurities in these locations all have the potential of impeding processes and reactions at the electrode-electrolyte interface. The pure electrodes showed a lower resistance compared to most electrodes discussed in the literature.

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