Durability of SOFCs using inexpensive Ca-doped ZrO2 electrolytes

Y. Toyofuku, T. Hosoi, T. Kawabata, Yusuke Shiratori, Shunsuke Taniguchi, Kazunari Sasaki

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

For the further commercialization of SOFCs, the cost reduction for materials is one of the most important technological issues. Currently, Y or Sc is widely used as a dopant of zirconia-based electrolytes, but these rare-earth elements are relatively expensive. In this study, we have examined the possibility to use Ca as an alternative dopant since it is abundant in the earth and inexpensive. We have experimentally found that Ca diffusion is relatively fast, causing cell performance degradation. Even so, such fast diffusion could be depressed by decreasing the concentration gradient of Ca dopant, leading to an improvement in the durability.

Original languageEnglish
Pages (from-to)807-813
Number of pages7
JournalECS Transactions
Volume57
Issue number1
DOIs
Publication statusPublished - Jan 1 2013

Fingerprint

Solid oxide fuel cells (SOFC)
durability
electrolyte
Durability
Electrolytes
Doping (additives)
commercialization
rare earth element
Cost reduction
Rare earth elements
Zirconia
degradation
Earth (planet)
Degradation
material
cost reduction

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Durability of SOFCs using inexpensive Ca-doped ZrO2 electrolytes. / Toyofuku, Y.; Hosoi, T.; Kawabata, T.; Shiratori, Yusuke; Taniguchi, Shunsuke; Sasaki, Kazunari.

In: ECS Transactions, Vol. 57, No. 1, 01.01.2013, p. 807-813.

Research output: Contribution to journalArticle

@article{b6b0df89b1d34a91bffeb69a05672b1a,
title = "Durability of SOFCs using inexpensive Ca-doped ZrO2 electrolytes",
abstract = "For the further commercialization of SOFCs, the cost reduction for materials is one of the most important technological issues. Currently, Y or Sc is widely used as a dopant of zirconia-based electrolytes, but these rare-earth elements are relatively expensive. In this study, we have examined the possibility to use Ca as an alternative dopant since it is abundant in the earth and inexpensive. We have experimentally found that Ca diffusion is relatively fast, causing cell performance degradation. Even so, such fast diffusion could be depressed by decreasing the concentration gradient of Ca dopant, leading to an improvement in the durability.",
author = "Y. Toyofuku and T. Hosoi and T. Kawabata and Yusuke Shiratori and Shunsuke Taniguchi and Kazunari Sasaki",
year = "2013",
month = "1",
day = "1",
doi = "10.1149/05701.0807ecst",
language = "English",
volume = "57",
pages = "807--813",
journal = "ECS Transactions",
issn = "1938-5862",
publisher = "Electrochemical Society, Inc.",
number = "1",

}

TY - JOUR

T1 - Durability of SOFCs using inexpensive Ca-doped ZrO2 electrolytes

AU - Toyofuku, Y.

AU - Hosoi, T.

AU - Kawabata, T.

AU - Shiratori, Yusuke

AU - Taniguchi, Shunsuke

AU - Sasaki, Kazunari

PY - 2013/1/1

Y1 - 2013/1/1

N2 - For the further commercialization of SOFCs, the cost reduction for materials is one of the most important technological issues. Currently, Y or Sc is widely used as a dopant of zirconia-based electrolytes, but these rare-earth elements are relatively expensive. In this study, we have examined the possibility to use Ca as an alternative dopant since it is abundant in the earth and inexpensive. We have experimentally found that Ca diffusion is relatively fast, causing cell performance degradation. Even so, such fast diffusion could be depressed by decreasing the concentration gradient of Ca dopant, leading to an improvement in the durability.

AB - For the further commercialization of SOFCs, the cost reduction for materials is one of the most important technological issues. Currently, Y or Sc is widely used as a dopant of zirconia-based electrolytes, but these rare-earth elements are relatively expensive. In this study, we have examined the possibility to use Ca as an alternative dopant since it is abundant in the earth and inexpensive. We have experimentally found that Ca diffusion is relatively fast, causing cell performance degradation. Even so, such fast diffusion could be depressed by decreasing the concentration gradient of Ca dopant, leading to an improvement in the durability.

UR - http://www.scopus.com/inward/record.url?scp=84905020949&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84905020949&partnerID=8YFLogxK

U2 - 10.1149/05701.0807ecst

DO - 10.1149/05701.0807ecst

M3 - Article

AN - SCOPUS:84905020949

VL - 57

SP - 807

EP - 813

JO - ECS Transactions

JF - ECS Transactions

SN - 1938-5862

IS - 1

ER -