Interaction between Water/Hydrogen and Oxide Ceramics

Natsuko Sakai; Katsuhiko Yamaji; Hideyuki Negishi; Teruhisa Horita; Harumi Yokokawa; Yue Ping Xiong; Michael B. Phillipps

doi:10.5796/electrochemistry.68.499

Interaction between Water/Hydrogen and Oxide Ceramics

Natsuko Sakai^*
, Katsuhiko Yamaji
, Hideyuki Negishi
, Teruhisa Horita
, Harumi Yokokawa
, Yue Ping Xiong
, Michael B. Phillipps

^*Corresponding author for this work

National Institute of Advanced Industrial Science and Technology

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

24 Scopus citations

Abstract

A significant interaction was observed between water vapor and ionic or mixed conducting oxides as that found in proton conducting ceramics. For the case of yttrium substituted zirconium oxide (YSZ), the oxygen exchange on the surface is found to be governed by the interaction of water molecule and oxygen vacancy of YSZ in a humid atmosphere. This reaction rate was found to be much faster than the reaction between oxygen gas and vacancy, which was observed as veiy large values of rate constant for oxygen tracer exchange reaction on YSZ in H₂¹⁸O + ¹⁸O₂ atmospheres at T = 773 K. The interfacial resistance of platinum electrode/YSZ electrolyte significantly decreased in humid atmospheres at T = 761 K.

Original language	English
Pages (from-to)	499-503
Number of pages	5
Journal	Electrochemistry
Volume	68
Issue number	6
DOIs	https://doi.org/10.5796/electrochemistry.68.499
State	Published - Jun 2000
Externally published	Yes

Keywords

SIMS
Surface Reaction
Water
YSZ

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title = "Interaction between Water/Hydrogen and Oxide Ceramics",

abstract = "A significant interaction was observed between water vapor and ionic or mixed conducting oxides as that found in proton conducting ceramics. For the case of yttrium substituted zirconium oxide (YSZ), the oxygen exchange on the surface is found to be governed by the interaction of water molecule and oxygen vacancy of YSZ in a humid atmosphere. This reaction rate was found to be much faster than the reaction between oxygen gas and vacancy, which was observed as veiy large values of rate constant for oxygen tracer exchange reaction on YSZ in H218O + 18O2 atmospheres at T = 773 K. The interfacial resistance of platinum electrode/YSZ electrolyte significantly decreased in humid atmospheres at T = 761 K.",

keywords = "SIMS, Surface Reaction, Water, YSZ",

author = "Natsuko Sakai and Katsuhiko Yamaji and Hideyuki Negishi and Teruhisa Horita and Harumi Yokokawa and Xiong, \{Yue Ping\} and Phillipps, \{Michael B.\}",

year = "2000",

month = jun,

doi = "10.5796/electrochemistry.68.499",

language = "英语",

volume = "68",

pages = "499--503",

journal = "Electrochemistry",

issn = "1344-3542",

publisher = "Electrochemical Society of Japan",

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}

TY - JOUR

T1 - Interaction between Water/Hydrogen and Oxide Ceramics

AU - Sakai, Natsuko

AU - Yamaji, Katsuhiko

AU - Negishi, Hideyuki

AU - Horita, Teruhisa

AU - Yokokawa, Harumi

AU - Xiong, Yue Ping

AU - Phillipps, Michael B.

PY - 2000/6

Y1 - 2000/6

N2 - A significant interaction was observed between water vapor and ionic or mixed conducting oxides as that found in proton conducting ceramics. For the case of yttrium substituted zirconium oxide (YSZ), the oxygen exchange on the surface is found to be governed by the interaction of water molecule and oxygen vacancy of YSZ in a humid atmosphere. This reaction rate was found to be much faster than the reaction between oxygen gas and vacancy, which was observed as veiy large values of rate constant for oxygen tracer exchange reaction on YSZ in H218O + 18O2 atmospheres at T = 773 K. The interfacial resistance of platinum electrode/YSZ electrolyte significantly decreased in humid atmospheres at T = 761 K.

AB - A significant interaction was observed between water vapor and ionic or mixed conducting oxides as that found in proton conducting ceramics. For the case of yttrium substituted zirconium oxide (YSZ), the oxygen exchange on the surface is found to be governed by the interaction of water molecule and oxygen vacancy of YSZ in a humid atmosphere. This reaction rate was found to be much faster than the reaction between oxygen gas and vacancy, which was observed as veiy large values of rate constant for oxygen tracer exchange reaction on YSZ in H218O + 18O2 atmospheres at T = 773 K. The interfacial resistance of platinum electrode/YSZ electrolyte significantly decreased in humid atmospheres at T = 761 K.

KW - SIMS

KW - Surface Reaction

KW - Water

KW - YSZ

UR - https://www.scopus.com/pages/publications/0000636266

U2 - 10.5796/electrochemistry.68.499

DO - 10.5796/electrochemistry.68.499

M3 - 文章

AN - SCOPUS:0000636266

SN - 1344-3542

VL - 68

SP - 499

EP - 503

JO - Electrochemistry

JF - Electrochemistry

IS - 6

ER -

Interaction between Water/Hydrogen and Oxide Ceramics

Abstract

Keywords

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