Spray pyrolysis of electrolyte interlayers for vacuum plasma-sprayed SOFC

Andreas O. Stoermer; Jennifer L.M. Rupp; Ludwig J. Gauckler

doi:10.1016/j.ssi.2006.06.033

Spray pyrolysis of electrolyte interlayers for vacuum plasma-sprayed SOFC

Andreas O. Stoermer, Jennifer L.M. Rupp, Ludwig J. Gauckler

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

40 Scopus citations

Abstract

The effects of gadolinia-doped ceria (CGO, Ce_0.8Gd_0.2O_1.9-x) and yttria-doped zirconia (8YSZ, Zr_0.92Y_0.08O_2-x) interlayers prepared by spray pyrolysis between vacuum plasma-sprayed 8YSZ electrolytes (8YSZ-VPS) and screen-printed (La_0.8Sr_0.2)_0.98MnO₃ cathodes (LSM) on the power output of solid oxide fuel cells (SOFC) are investigated. Amorphous thin films are deposited and then converted to nanocrystalline electrolyte-cathode interlayers during the first heat-up cycle of a SOFC to the operating temperature. CGO thin films between the YSZ plasma-sprayed electrolyte and the LSM cathode increased the power output by more than 20% compared to cells without interlayers, whereas YSZ films degraded the power output of cells. It is assumed that CGO improves the charge transfer at the electrolyte-cathode interface and that the CGO layer prevents the formation of undesirable insulation of La-zirconate at the interface 8YSZ/LSM.

Original language	English
Pages (from-to)	2075-2079
Number of pages	5
Journal	Solid State Ionics
Volume	177
Issue number	19-25 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.ssi.2006.06.033
State	Published - 15 Oct 2006
Externally published	Yes

Keywords

Ceria
Electrolyte
SOFC
Spray pyrolysis
Thin film
Vacuum plasma spray

Access to Document

10.1016/j.ssi.2006.06.033

Cite this

@article{e13f480d6c934a86a3835beeaac391ef,

title = "Spray pyrolysis of electrolyte interlayers for vacuum plasma-sprayed SOFC",

abstract = "The effects of gadolinia-doped ceria (CGO, Ce0.8Gd0.2O1.9-x) and yttria-doped zirconia (8YSZ, Zr0.92Y0.08O2-x) interlayers prepared by spray pyrolysis between vacuum plasma-sprayed 8YSZ electrolytes (8YSZ-VPS) and screen-printed (La0.8Sr0.2)0.98MnO3 cathodes (LSM) on the power output of solid oxide fuel cells (SOFC) are investigated. Amorphous thin films are deposited and then converted to nanocrystalline electrolyte-cathode interlayers during the first heat-up cycle of a SOFC to the operating temperature. CGO thin films between the YSZ plasma-sprayed electrolyte and the LSM cathode increased the power output by more than 20% compared to cells without interlayers, whereas YSZ films degraded the power output of cells. It is assumed that CGO improves the charge transfer at the electrolyte-cathode interface and that the CGO layer prevents the formation of undesirable insulation of La-zirconate at the interface 8YSZ/LSM.",

keywords = "Ceria, Electrolyte, SOFC, Spray pyrolysis, Thin film, Vacuum plasma spray",

author = "Stoermer, {Andreas O.} and Rupp, {Jennifer L.M.} and Gauckler, {Ludwig J.}",

year = "2006",

month = oct,

day = "15",

doi = "10.1016/j.ssi.2006.06.033",

language = "English",

volume = "177",

pages = "2075--2079",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier B.V.",

number = "19-25 SPEC. ISS.",

}

TY - JOUR

T1 - Spray pyrolysis of electrolyte interlayers for vacuum plasma-sprayed SOFC

AU - Stoermer, Andreas O.

AU - Rupp, Jennifer L.M.

AU - Gauckler, Ludwig J.

PY - 2006/10/15

Y1 - 2006/10/15

N2 - The effects of gadolinia-doped ceria (CGO, Ce0.8Gd0.2O1.9-x) and yttria-doped zirconia (8YSZ, Zr0.92Y0.08O2-x) interlayers prepared by spray pyrolysis between vacuum plasma-sprayed 8YSZ electrolytes (8YSZ-VPS) and screen-printed (La0.8Sr0.2)0.98MnO3 cathodes (LSM) on the power output of solid oxide fuel cells (SOFC) are investigated. Amorphous thin films are deposited and then converted to nanocrystalline electrolyte-cathode interlayers during the first heat-up cycle of a SOFC to the operating temperature. CGO thin films between the YSZ plasma-sprayed electrolyte and the LSM cathode increased the power output by more than 20% compared to cells without interlayers, whereas YSZ films degraded the power output of cells. It is assumed that CGO improves the charge transfer at the electrolyte-cathode interface and that the CGO layer prevents the formation of undesirable insulation of La-zirconate at the interface 8YSZ/LSM.

AB - The effects of gadolinia-doped ceria (CGO, Ce0.8Gd0.2O1.9-x) and yttria-doped zirconia (8YSZ, Zr0.92Y0.08O2-x) interlayers prepared by spray pyrolysis between vacuum plasma-sprayed 8YSZ electrolytes (8YSZ-VPS) and screen-printed (La0.8Sr0.2)0.98MnO3 cathodes (LSM) on the power output of solid oxide fuel cells (SOFC) are investigated. Amorphous thin films are deposited and then converted to nanocrystalline electrolyte-cathode interlayers during the first heat-up cycle of a SOFC to the operating temperature. CGO thin films between the YSZ plasma-sprayed electrolyte and the LSM cathode increased the power output by more than 20% compared to cells without interlayers, whereas YSZ films degraded the power output of cells. It is assumed that CGO improves the charge transfer at the electrolyte-cathode interface and that the CGO layer prevents the formation of undesirable insulation of La-zirconate at the interface 8YSZ/LSM.

KW - Ceria

KW - Electrolyte

KW - SOFC

KW - Spray pyrolysis

KW - Thin film

KW - Vacuum plasma spray

UR - http://www.scopus.com/inward/record.url?scp=33750020888&partnerID=8YFLogxK

U2 - 10.1016/j.ssi.2006.06.033

DO - 10.1016/j.ssi.2006.06.033

M3 - Article

AN - SCOPUS:33750020888

SN - 0167-2738

VL - 177

SP - 2075

EP - 2079

JO - Solid State Ionics

JF - Solid State Ionics

IS - 19-25 SPEC. ISS.

ER -

Spray pyrolysis of electrolyte interlayers for vacuum plasma-sprayed SOFC

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this