Dynamic and Impure Perovskite Structured Metal Oxide Surfaces

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Abstract

Surfaces of LSF and LSCF perovskite model electrodes were investigated using a variety of analytical methods on flat model electrodes that were prepared as either pellets or as thin films on top of YSZ pellets in other to throw more light on the widely discussed segregation of layers and particles on the electrode surfaces. An experimental test of the suggestion that the segregation might happen in the vacuum in the analysis equipment gave a negative result. Formation of particles containing significant amounts of S and Cr from segregation of the trace impurities in the acquired powders were observed, and lead us to a new hypothesis about the differences between flat model electrodes and technical nano-sized composite electrodes.
Original languageEnglish
JournalE C S Transactions
Volume80
Issue number9
Pages (from-to)91-100
ISSN1938-5862
DOIs
Publication statusPublished - 2017
Event232nd ECS meeting - National Harbor, Washington, DC, United States
Duration: 1 Oct 20175 Oct 2017
http://www.electrochem.org/232

Conference

Conference232nd ECS meeting
CountryUnited States
CityNational Harbor, Washington, DC
Period01/10/201705/10/2017
Internet address

Cite this

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title = "Dynamic and Impure Perovskite Structured Metal Oxide Surfaces",
abstract = "Surfaces of LSF and LSCF perovskite model electrodes were investigated using a variety of analytical methods on flat model electrodes that were prepared as either pellets or as thin films on top of YSZ pellets in other to throw more light on the widely discussed segregation of layers and particles on the electrode surfaces. An experimental test of the suggestion that the segregation might happen in the vacuum in the analysis equipment gave a negative result. Formation of particles containing significant amounts of S and Cr from segregation of the trace impurities in the acquired powders were observed, and lead us to a new hypothesis about the differences between flat model electrodes and technical nano-sized composite electrodes.",
author = "Hansen, {Karin Vels} and Kion Norrman and Traulsen, {Marie Lund} and Mogensen, {Mogens Bjerg}",
year = "2017",
doi = "10.1149/08009.0091ecst",
language = "English",
volume = "80",
pages = "91--100",
journal = "E C S Transactions",
issn = "1938-5862",
publisher = "The Electrochemical Society",
number = "9",

}

Dynamic and Impure Perovskite Structured Metal Oxide Surfaces. / Hansen, Karin Vels; Norrman, Kion; Traulsen, Marie Lund; Mogensen, Mogens Bjerg.

In: E C S Transactions, Vol. 80, No. 9, 2017, p. 91-100.

Research output: Contribution to journalConference articleResearchpeer-review

TY - GEN

T1 - Dynamic and Impure Perovskite Structured Metal Oxide Surfaces

AU - Hansen, Karin Vels

AU - Norrman, Kion

AU - Traulsen, Marie Lund

AU - Mogensen, Mogens Bjerg

PY - 2017

Y1 - 2017

N2 - Surfaces of LSF and LSCF perovskite model electrodes were investigated using a variety of analytical methods on flat model electrodes that were prepared as either pellets or as thin films on top of YSZ pellets in other to throw more light on the widely discussed segregation of layers and particles on the electrode surfaces. An experimental test of the suggestion that the segregation might happen in the vacuum in the analysis equipment gave a negative result. Formation of particles containing significant amounts of S and Cr from segregation of the trace impurities in the acquired powders were observed, and lead us to a new hypothesis about the differences between flat model electrodes and technical nano-sized composite electrodes.

AB - Surfaces of LSF and LSCF perovskite model electrodes were investigated using a variety of analytical methods on flat model electrodes that were prepared as either pellets or as thin films on top of YSZ pellets in other to throw more light on the widely discussed segregation of layers and particles on the electrode surfaces. An experimental test of the suggestion that the segregation might happen in the vacuum in the analysis equipment gave a negative result. Formation of particles containing significant amounts of S and Cr from segregation of the trace impurities in the acquired powders were observed, and lead us to a new hypothesis about the differences between flat model electrodes and technical nano-sized composite electrodes.

U2 - 10.1149/08009.0091ecst

DO - 10.1149/08009.0091ecst

M3 - Conference article

VL - 80

SP - 91

EP - 100

JO - E C S Transactions

JF - E C S Transactions

SN - 1938-5862

IS - 9

ER -