Characterization of Pb2Ru2-xBixO7 (x = 0, 0.2, and 0.4) pyrochlore oxide cathode materials for intermediate temperature solid oxide fuel cells

Ki Woog Song; Ki Tae Lee

Characterization of Pb₂Ru_2-xBi_xO₇ (x = 0, 0.2, and 0.4) pyrochlore oxide cathode materials for intermediate temperature solid oxide fuel cells

Ki Woog Song
, 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 Pb₂Ru_2-xBi_xO₇ (x = 0, 0.2, and 0.4) pyrochlore oxides have been studied as cathode materials for intermediate temperature solid oxide fuel cells (IT-SOFCs). All the samples synthesized by co-precipitation method were single phase pyrochlore oxides. Pb₂Ru₂O₇ shows high electrical conductivity of over 2 × 10³ S·cm^-1. Both electrical conductivity and thermal expansion coefficient decrease with an increase in the Bi content. Pb₂Ru_1.8Bi_0.2O₇ showed the lowest polarization resistance of 0.12 Ω·cm² at 800 °C in an air atmosphere.

Original language	English
Pages (from-to)	30-33
Number of pages	4
Journal	Journal of Ceramic Processing Research
Volume	12
Issue number	1
State	Published - 2011

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Cathode
Lead ruthenate
Oxygen reduction reaction
Pyrochlore
Solid oxide fuel cell
Thermal expansion

Quacquarelli Symonds(QS) Subject Topics

Materials Science

Cite this

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title = "Characterization of Pb2Ru2-xBixO7 (x = 0, 0.2, and 0.4) pyrochlore oxide cathode materials for intermediate temperature solid oxide fuel cells",

abstract = "The Pb2Ru2-xBixO7 (x = 0, 0.2, and 0.4) pyrochlore oxides have been studied as cathode materials for intermediate temperature solid oxide fuel cells (IT-SOFCs). All the samples synthesized by co-precipitation method were single phase pyrochlore oxides. Pb2Ru2O7 shows high electrical conductivity of over 2 × 103 S·cm-1. Both electrical conductivity and thermal expansion coefficient decrease with an increase in the Bi content. Pb2Ru1.8Bi0.2O7 showed the lowest polarization resistance of 0.12 Ω·cm2 at 800 °C in an air atmosphere.",

keywords = "Cathode, Lead ruthenate, Oxygen reduction reaction, Pyrochlore, Solid oxide fuel cell, Thermal expansion",

author = "Song, \{Ki Woog\} and Lee, \{Ki Tae\}",

year = "2011",

language = "English",

volume = "12",

pages = "30--33",

journal = "Journal of Ceramic Processing Research",

issn = "1229-9162",

number = "1",

}

TY - JOUR

T1 - Characterization of Pb2Ru2-xBixO7 (x = 0, 0.2, and 0.4) pyrochlore oxide cathode materials for intermediate temperature solid oxide fuel cells

AU - Song, Ki Woog

AU - Lee, Ki Tae

PY - 2011

Y1 - 2011

N2 - The Pb2Ru2-xBixO7 (x = 0, 0.2, and 0.4) pyrochlore oxides have been studied as cathode materials for intermediate temperature solid oxide fuel cells (IT-SOFCs). All the samples synthesized by co-precipitation method were single phase pyrochlore oxides. Pb2Ru2O7 shows high electrical conductivity of over 2 × 103 S·cm-1. Both electrical conductivity and thermal expansion coefficient decrease with an increase in the Bi content. Pb2Ru1.8Bi0.2O7 showed the lowest polarization resistance of 0.12 Ω·cm2 at 800 °C in an air atmosphere.

AB - The Pb2Ru2-xBixO7 (x = 0, 0.2, and 0.4) pyrochlore oxides have been studied as cathode materials for intermediate temperature solid oxide fuel cells (IT-SOFCs). All the samples synthesized by co-precipitation method were single phase pyrochlore oxides. Pb2Ru2O7 shows high electrical conductivity of over 2 × 103 S·cm-1. Both electrical conductivity and thermal expansion coefficient decrease with an increase in the Bi content. Pb2Ru1.8Bi0.2O7 showed the lowest polarization resistance of 0.12 Ω·cm2 at 800 °C in an air atmosphere.

KW - Cathode

KW - Lead ruthenate

KW - Oxygen reduction reaction

KW - Pyrochlore

KW - Solid oxide fuel cell

KW - Thermal expansion

UR - https://www.scopus.com/pages/publications/79960984740

M3 - Journal article

AN - SCOPUS:79960984740

SN - 1229-9162

VL - 12

SP - 30

EP - 33

JO - Journal of Ceramic Processing Research

JF - Journal of Ceramic Processing Research

IS - 1

ER -