Compositional influence of LSM-YSZ composite cathodes on improved performance and durability of solid oxide fuel cells

Hwa Seob Song, Seungho Lee, Sang Hoon Hyun, Joosun Kim, Joo Ho Moon

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The use of a dual-composite approach, in which both LSM and YSZ nanoparticles are placed on YSZ core particles, allows for the development of an ideal cathode microstructure with improved phase contiguity and durability for use in solid oxide fuel cells. The volume fraction of the conjugated YSZ phase plays a critical role in the optimization of the cathode microstructure for achieving good durability because it acts as an interconnecting bridge between YSZ core particles. However, the presence of excess conjugated YSZ phase interrupts the formation of sufficient triple phase boundary sites by disturbing the contacts between the LSM and YSZ phases. Impedance spectroscopy analysis and microstructural observations provide a better understanding of the influence of the composition on the electrochemical performance and durability of these dual composite cathodes.

Original languageEnglish
Pages (from-to)25-31
Number of pages7
JournalJournal of Power Sources
Volume187
Issue number1
DOIs
Publication statusPublished - 2009 Feb 1

Fingerprint

solid oxide fuel cells
yttria-stabilized zirconia
Solid oxide fuel cells (SOFC)
durability
Durability
Cathodes
cathodes
composite materials
Composite materials
Microstructure
Phase boundaries
Volume fraction
Spectroscopy
Nanoparticles
microstructure
Chemical analysis
impedance
nanoparticles
optimization
spectroscopy

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

Song, Hwa Seob ; Lee, Seungho ; Hyun, Sang Hoon ; Kim, Joosun ; Moon, Joo Ho. / Compositional influence of LSM-YSZ composite cathodes on improved performance and durability of solid oxide fuel cells. In: Journal of Power Sources. 2009 ; Vol. 187, No. 1. pp. 25-31.
@article{a8bf8757a34c485eb7f37927d3f80b03,
title = "Compositional influence of LSM-YSZ composite cathodes on improved performance and durability of solid oxide fuel cells",
abstract = "The use of a dual-composite approach, in which both LSM and YSZ nanoparticles are placed on YSZ core particles, allows for the development of an ideal cathode microstructure with improved phase contiguity and durability for use in solid oxide fuel cells. The volume fraction of the conjugated YSZ phase plays a critical role in the optimization of the cathode microstructure for achieving good durability because it acts as an interconnecting bridge between YSZ core particles. However, the presence of excess conjugated YSZ phase interrupts the formation of sufficient triple phase boundary sites by disturbing the contacts between the LSM and YSZ phases. Impedance spectroscopy analysis and microstructural observations provide a better understanding of the influence of the composition on the electrochemical performance and durability of these dual composite cathodes.",
author = "Song, {Hwa Seob} and Seungho Lee and Hyun, {Sang Hoon} and Joosun Kim and Moon, {Joo Ho}",
year = "2009",
month = "2",
day = "1",
doi = "10.1016/j.jpowsour.2008.10.092",
language = "English",
volume = "187",
pages = "25--31",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",
number = "1",

}

Compositional influence of LSM-YSZ composite cathodes on improved performance and durability of solid oxide fuel cells. / Song, Hwa Seob; Lee, Seungho; Hyun, Sang Hoon; Kim, Joosun; Moon, Joo Ho.

In: Journal of Power Sources, Vol. 187, No. 1, 01.02.2009, p. 25-31.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Compositional influence of LSM-YSZ composite cathodes on improved performance and durability of solid oxide fuel cells

AU - Song, Hwa Seob

AU - Lee, Seungho

AU - Hyun, Sang Hoon

AU - Kim, Joosun

AU - Moon, Joo Ho

PY - 2009/2/1

Y1 - 2009/2/1

N2 - The use of a dual-composite approach, in which both LSM and YSZ nanoparticles are placed on YSZ core particles, allows for the development of an ideal cathode microstructure with improved phase contiguity and durability for use in solid oxide fuel cells. The volume fraction of the conjugated YSZ phase plays a critical role in the optimization of the cathode microstructure for achieving good durability because it acts as an interconnecting bridge between YSZ core particles. However, the presence of excess conjugated YSZ phase interrupts the formation of sufficient triple phase boundary sites by disturbing the contacts between the LSM and YSZ phases. Impedance spectroscopy analysis and microstructural observations provide a better understanding of the influence of the composition on the electrochemical performance and durability of these dual composite cathodes.

AB - The use of a dual-composite approach, in which both LSM and YSZ nanoparticles are placed on YSZ core particles, allows for the development of an ideal cathode microstructure with improved phase contiguity and durability for use in solid oxide fuel cells. The volume fraction of the conjugated YSZ phase plays a critical role in the optimization of the cathode microstructure for achieving good durability because it acts as an interconnecting bridge between YSZ core particles. However, the presence of excess conjugated YSZ phase interrupts the formation of sufficient triple phase boundary sites by disturbing the contacts between the LSM and YSZ phases. Impedance spectroscopy analysis and microstructural observations provide a better understanding of the influence of the composition on the electrochemical performance and durability of these dual composite cathodes.

UR - http://www.scopus.com/inward/record.url?scp=58149156290&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=58149156290&partnerID=8YFLogxK

U2 - 10.1016/j.jpowsour.2008.10.092

DO - 10.1016/j.jpowsour.2008.10.092

M3 - Article

AN - SCOPUS:58149156290

VL - 187

SP - 25

EP - 31

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

IS - 1

ER -