The effect of firing conditions on electrical conductivity and electrochemical properties of Sr0.8La0.2TiO3-Ce0.9Gd0.1O1.95 composite anodes for solid oxide fuel cells

Ji Hoon Koo; Ki Tae Lee

doi:10.1016/j.ceramint.2015.10.012

The effect of firing conditions on electrical conductivity and electrochemical properties of Sr_0.8La_0.2TiO₃-Ce_0.9Gd_0.1O_1.95 composite anodes for solid oxide fuel cells

Ji Hoon Koo
, Ki Tae Lee^*

^*Corresponding author for this work

Electronic Materials Engineering

Jeonbuk National University

Research output: Contribution to journal › Journal article › peer-review

3 Scopus citations

Abstract

The electrical conductivity of Sr_0.8La_0.2TiO₃ (SLT) increased significantly through reducing calcination and sintering processes. The electrical conductivity of SLT sintered three times under a reducing atmosphere was 249 S cm^-1 at 800 °C in a H₂ atmosphere, which is 40 times higher than that of SLT sintered in air. The enhanced electrical conduction might be caused by the variation in valence state from Ti⁴⁺ to Ti³⁺. The single-cell performance of the Sr_0.8La_0.2TiO₃-Ce_0.9Gd_0.1O_1.95 (SLT-GDC) composite anode improved with increasing amount of GDC. The SG (HHH)15 anode exhibited the highest maximum power density of 25 mW cm^-2 at 800 °C for CH₄ fuel.

Original language	English
Pages (from-to)	2209-2213
Number of pages	5
Journal	Ceramics International
Volume	42
Issue number	2
DOIs	https://doi.org/10.1016/j.ceramint.2015.10.012
State	Published - 2016.02.1

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

C. Electrical conductivity
Electrochemical performance
Non-stoichiometry
Oxide anode
Solid oxide fuel cell

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Engineering - Petroleum
Engineering - Chemical

Access to Document

10.1016/j.ceramint.2015.10.012

Cite this

@article{a85bdc71bc1f4783a80891fb1f30186e,

title = "The effect of firing conditions on electrical conductivity and electrochemical properties of Sr0.8La0.2TiO3-Ce0.9Gd0.1O1.95 composite anodes for solid oxide fuel cells",

abstract = "The electrical conductivity of Sr0.8La0.2TiO3 (SLT) increased significantly through reducing calcination and sintering processes. The electrical conductivity of SLT sintered three times under a reducing atmosphere was 249 S cm-1 at 800 °C in a H2 atmosphere, which is 40 times higher than that of SLT sintered in air. The enhanced electrical conduction might be caused by the variation in valence state from Ti4+ to Ti3+. The single-cell performance of the Sr0.8La0.2TiO3-Ce0.9Gd0.1O1.95 (SLT-GDC) composite anode improved with increasing amount of GDC. The SG (HHH)15 anode exhibited the highest maximum power density of 25 mW cm-2 at 800 °C for CH4 fuel.",

keywords = "C. Electrical conductivity, Electrochemical performance, Non-stoichiometry, Oxide anode, Solid oxide fuel cell",

author = "Koo, \{Ji Hoon\} and Lee, \{Ki Tae\}",

year = "2016",

month = feb,

day = "1",

doi = "10.1016/j.ceramint.2015.10.012",

language = "English",

volume = "42",

pages = "2209--2213",

journal = "Ceramics International",

issn = "0272-8842",

number = "2",

}

TY - JOUR

T1 - The effect of firing conditions on electrical conductivity and electrochemical properties of Sr0.8La0.2TiO3-Ce0.9Gd0.1O1.95 composite anodes for solid oxide fuel cells

AU - Koo, Ji Hoon

AU - Lee, Ki Tae

PY - 2016/2/1

Y1 - 2016/2/1

N2 - The electrical conductivity of Sr0.8La0.2TiO3 (SLT) increased significantly through reducing calcination and sintering processes. The electrical conductivity of SLT sintered three times under a reducing atmosphere was 249 S cm-1 at 800 °C in a H2 atmosphere, which is 40 times higher than that of SLT sintered in air. The enhanced electrical conduction might be caused by the variation in valence state from Ti4+ to Ti3+. The single-cell performance of the Sr0.8La0.2TiO3-Ce0.9Gd0.1O1.95 (SLT-GDC) composite anode improved with increasing amount of GDC. The SG (HHH)15 anode exhibited the highest maximum power density of 25 mW cm-2 at 800 °C for CH4 fuel.

AB - The electrical conductivity of Sr0.8La0.2TiO3 (SLT) increased significantly through reducing calcination and sintering processes. The electrical conductivity of SLT sintered three times under a reducing atmosphere was 249 S cm-1 at 800 °C in a H2 atmosphere, which is 40 times higher than that of SLT sintered in air. The enhanced electrical conduction might be caused by the variation in valence state from Ti4+ to Ti3+. The single-cell performance of the Sr0.8La0.2TiO3-Ce0.9Gd0.1O1.95 (SLT-GDC) composite anode improved with increasing amount of GDC. The SG (HHH)15 anode exhibited the highest maximum power density of 25 mW cm-2 at 800 °C for CH4 fuel.

KW - C. Electrical conductivity

KW - Electrochemical performance

KW - Non-stoichiometry

KW - Oxide anode

KW - Solid oxide fuel cell

UR - https://www.scopus.com/pages/publications/84955067141

U2 - 10.1016/j.ceramint.2015.10.012

DO - 10.1016/j.ceramint.2015.10.012

M3 - Journal article

AN - SCOPUS:84955067141

SN - 0272-8842

VL - 42

SP - 2209

EP - 2213

JO - Ceramics International

JF - Ceramics International

IS - 2

ER -