Effects of transition metal addition on sintering and electrical conductivity of La-doped CeO2 as buffer layer for doped LaGaO 3 electrolyte film

Jong Eun Hong, Shintaro Ida, Tatsumi Ishihara

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Effects of transition metal additives (0.5 at.% Fe, Mn, and Co) on densification, microstructure, crystal structure, and electrical conductivity of Ce0.6La0.4O2 (LDC) were investigated. The power generation property of a single cell using LDC with the transition metal addition as buffer layer was measured. The addition of Co decreased the sintering temperature of LDC to 1373 K and increased the grain size when the sintering was performed at 1623 K. No impurity phase appeared by the addition of transition metals. The total conductivity of the Co-LDC sample sintered at 1373 K was even higher than that of LDC sintered at 1623 K, and Co-LDC sintered at 1623 K exhibited a conductivity of around 0.01 S cm- 1 at 973 K for the high density and large grain size. The single cell using an LSGM electrolyte film and Co-LDC buffer layers showed an open circuit voltage (~ 1.1 V) close to the theoretical value and the maximum power density of 974, 353, and 84 mW cm- 2 at 973, 873, and 773 K, respectively. Thus, Co-LDC is a promising buffer layer for enhanced sintering density and decreasing the ohmic resistance in anode supported SOFCs using LSGM electrolyte films.

Original languageEnglish
Pages (from-to)374-377
Number of pages4
JournalSolid State Ionics
Volume262
DOIs
Publication statusPublished - Sep 1 2014

Fingerprint

Buffer layers
Electrolytes
Transition metals
sintering
Sintering
buffers
transition metals
electrolytes
conductivity
electrical resistivity
grain size
Acoustic impedance
Open circuit voltage
densification
Solid oxide fuel cells (SOFC)
open circuit voltage
cells
Densification
Power generation
radiant flux density

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Effects of transition metal addition on sintering and electrical conductivity of La-doped CeO2 as buffer layer for doped LaGaO 3 electrolyte film. / Hong, Jong Eun; Ida, Shintaro; Ishihara, Tatsumi.

In: Solid State Ionics, Vol. 262, 01.09.2014, p. 374-377.

Research output: Contribution to journalArticle

@article{e284f619ef3b4bfd8400005f938ccbd9,
title = "Effects of transition metal addition on sintering and electrical conductivity of La-doped CeO2 as buffer layer for doped LaGaO 3 electrolyte film",
abstract = "Effects of transition metal additives (0.5 at.{\%} Fe, Mn, and Co) on densification, microstructure, crystal structure, and electrical conductivity of Ce0.6La0.4O2 (LDC) were investigated. The power generation property of a single cell using LDC with the transition metal addition as buffer layer was measured. The addition of Co decreased the sintering temperature of LDC to 1373 K and increased the grain size when the sintering was performed at 1623 K. No impurity phase appeared by the addition of transition metals. The total conductivity of the Co-LDC sample sintered at 1373 K was even higher than that of LDC sintered at 1623 K, and Co-LDC sintered at 1623 K exhibited a conductivity of around 0.01 S cm- 1 at 973 K for the high density and large grain size. The single cell using an LSGM electrolyte film and Co-LDC buffer layers showed an open circuit voltage (~ 1.1 V) close to the theoretical value and the maximum power density of 974, 353, and 84 mW cm- 2 at 973, 873, and 773 K, respectively. Thus, Co-LDC is a promising buffer layer for enhanced sintering density and decreasing the ohmic resistance in anode supported SOFCs using LSGM electrolyte films.",
author = "Hong, {Jong Eun} and Shintaro Ida and Tatsumi Ishihara",
year = "2014",
month = "9",
day = "1",
doi = "10.1016/j.ssi.2013.11.049",
language = "English",
volume = "262",
pages = "374--377",
journal = "Solid State Ionics",
issn = "0167-2738",
publisher = "Elsevier",

}

TY - JOUR

T1 - Effects of transition metal addition on sintering and electrical conductivity of La-doped CeO2 as buffer layer for doped LaGaO 3 electrolyte film

AU - Hong, Jong Eun

AU - Ida, Shintaro

AU - Ishihara, Tatsumi

PY - 2014/9/1

Y1 - 2014/9/1

N2 - Effects of transition metal additives (0.5 at.% Fe, Mn, and Co) on densification, microstructure, crystal structure, and electrical conductivity of Ce0.6La0.4O2 (LDC) were investigated. The power generation property of a single cell using LDC with the transition metal addition as buffer layer was measured. The addition of Co decreased the sintering temperature of LDC to 1373 K and increased the grain size when the sintering was performed at 1623 K. No impurity phase appeared by the addition of transition metals. The total conductivity of the Co-LDC sample sintered at 1373 K was even higher than that of LDC sintered at 1623 K, and Co-LDC sintered at 1623 K exhibited a conductivity of around 0.01 S cm- 1 at 973 K for the high density and large grain size. The single cell using an LSGM electrolyte film and Co-LDC buffer layers showed an open circuit voltage (~ 1.1 V) close to the theoretical value and the maximum power density of 974, 353, and 84 mW cm- 2 at 973, 873, and 773 K, respectively. Thus, Co-LDC is a promising buffer layer for enhanced sintering density and decreasing the ohmic resistance in anode supported SOFCs using LSGM electrolyte films.

AB - Effects of transition metal additives (0.5 at.% Fe, Mn, and Co) on densification, microstructure, crystal structure, and electrical conductivity of Ce0.6La0.4O2 (LDC) were investigated. The power generation property of a single cell using LDC with the transition metal addition as buffer layer was measured. The addition of Co decreased the sintering temperature of LDC to 1373 K and increased the grain size when the sintering was performed at 1623 K. No impurity phase appeared by the addition of transition metals. The total conductivity of the Co-LDC sample sintered at 1373 K was even higher than that of LDC sintered at 1623 K, and Co-LDC sintered at 1623 K exhibited a conductivity of around 0.01 S cm- 1 at 973 K for the high density and large grain size. The single cell using an LSGM electrolyte film and Co-LDC buffer layers showed an open circuit voltage (~ 1.1 V) close to the theoretical value and the maximum power density of 974, 353, and 84 mW cm- 2 at 973, 873, and 773 K, respectively. Thus, Co-LDC is a promising buffer layer for enhanced sintering density and decreasing the ohmic resistance in anode supported SOFCs using LSGM electrolyte films.

UR - http://www.scopus.com/inward/record.url?scp=84903275772&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84903275772&partnerID=8YFLogxK

U2 - 10.1016/j.ssi.2013.11.049

DO - 10.1016/j.ssi.2013.11.049

M3 - Article

VL - 262

SP - 374

EP - 377

JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

ER -