Effect of water on electrochemical oxygen reduction at the interface between fluorite-type oxide-ion conductors and various types of electrodes

Natsuko Sakai; Katsuhiko Yamaji; Teruhisa Horita; Yue Ping Xiong; Haruo Kishimoto; Manuel E. Brito; Harumi Yokokawa

doi:10.1016/j.ssi.2004.07.027

Effect of water on electrochemical oxygen reduction at the interface between fluorite-type oxide-ion conductors and various types of electrodes

Natsuko Sakai^*
, Katsuhiko Yamaji
, Teruhisa Horita
, Yue Ping Xiong
, Haruo Kishimoto
, Manuel E. Brito
, Harumi Yokokawa

^*Corresponding author for this work

National Institute of Advanced Industrial Science and Technology

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

22 Scopus citations

Abstract

The effect of water vapor addition on the electrochemical oxygen reduction was investigated for the interfaces between fluorite-type oxide-ion conductors (YSZ, ceria) and various types of electrodes at the temperature range 750-1100 K in air. The interface conductivity of YSZ electrolyte/gold electrode at open circuit condition increased when a slight amount of water vapor was added to air at T=865 K. However, the interface conductivity of YSZ/platinum decreased during a long-term exposure in humid atmospheres. The improvement was correlated to the enhancement of oxygen exchange through water molecules, and the degradation is probably due to the blocking of oxygen molecule migration by the adsorbed water molecules.

Original language	English
Pages (from-to)	103-109
Number of pages	7
Journal	Solid State Ionics
Volume	174
Issue number	1-4
DOIs	https://doi.org/10.1016/j.ssi.2004.07.027
State	Published - 29 Oct 2004
Externally published	Yes

Keywords

Ceria
Diffusion
Oxygen
SIMS
Solid oxide fuel cell (SOFC)
Surface reaction
Water
Zirconia

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10.1016/j.ssi.2004.07.027

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title = "Effect of water on electrochemical oxygen reduction at the interface between fluorite-type oxide-ion conductors and various types of electrodes",

abstract = "The effect of water vapor addition on the electrochemical oxygen reduction was investigated for the interfaces between fluorite-type oxide-ion conductors (YSZ, ceria) and various types of electrodes at the temperature range 750-1100 K in air. The interface conductivity of YSZ electrolyte/gold electrode at open circuit condition increased when a slight amount of water vapor was added to air at T=865 K. However, the interface conductivity of YSZ/platinum decreased during a long-term exposure in humid atmospheres. The improvement was correlated to the enhancement of oxygen exchange through water molecules, and the degradation is probably due to the blocking of oxygen molecule migration by the adsorbed water molecules.",

keywords = "Ceria, Diffusion, Oxygen, SIMS, Solid oxide fuel cell (SOFC), Surface reaction, Water, Zirconia",

author = "Natsuko Sakai and Katsuhiko Yamaji and Teruhisa Horita and Xiong, \{Yue Ping\} and Haruo Kishimoto and Brito, \{Manuel E.\} and Harumi Yokokawa",

year = "2004",

month = oct,

day = "29",

doi = "10.1016/j.ssi.2004.07.027",

language = "英语",

volume = "174",

pages = "103--109",

journal = "Solid State Ionics",

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TY - JOUR

T1 - Effect of water on electrochemical oxygen reduction at the interface between fluorite-type oxide-ion conductors and various types of electrodes

AU - Sakai, Natsuko

AU - Yamaji, Katsuhiko

AU - Horita, Teruhisa

AU - Xiong, Yue Ping

AU - Kishimoto, Haruo

AU - Brito, Manuel E.

AU - Yokokawa, Harumi

PY - 2004/10/29

Y1 - 2004/10/29

N2 - The effect of water vapor addition on the electrochemical oxygen reduction was investigated for the interfaces between fluorite-type oxide-ion conductors (YSZ, ceria) and various types of electrodes at the temperature range 750-1100 K in air. The interface conductivity of YSZ electrolyte/gold electrode at open circuit condition increased when a slight amount of water vapor was added to air at T=865 K. However, the interface conductivity of YSZ/platinum decreased during a long-term exposure in humid atmospheres. The improvement was correlated to the enhancement of oxygen exchange through water molecules, and the degradation is probably due to the blocking of oxygen molecule migration by the adsorbed water molecules.

AB - The effect of water vapor addition on the electrochemical oxygen reduction was investigated for the interfaces between fluorite-type oxide-ion conductors (YSZ, ceria) and various types of electrodes at the temperature range 750-1100 K in air. The interface conductivity of YSZ electrolyte/gold electrode at open circuit condition increased when a slight amount of water vapor was added to air at T=865 K. However, the interface conductivity of YSZ/platinum decreased during a long-term exposure in humid atmospheres. The improvement was correlated to the enhancement of oxygen exchange through water molecules, and the degradation is probably due to the blocking of oxygen molecule migration by the adsorbed water molecules.

KW - Ceria

KW - Diffusion

KW - Oxygen

KW - SIMS

KW - Solid oxide fuel cell (SOFC)

KW - Surface reaction

KW - Water

KW - Zirconia

UR - https://www.scopus.com/pages/publications/10044268439

U2 - 10.1016/j.ssi.2004.07.027

DO - 10.1016/j.ssi.2004.07.027

M3 - 文章

AN - SCOPUS:10044268439

SN - 0167-2738

VL - 174

SP - 103

EP - 109

JO - Solid State Ionics

JF - Solid State Ionics

IS - 1-4

ER -

Effect of water on electrochemical oxygen reduction at the interface between fluorite-type oxide-ion conductors and various types of electrodes

Abstract

Keywords

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