Nano-composite materials for high-performance and durability of solid oxide fuel cells

Sun Dong Kim, Hwan Moon, Sang Hoon Hyun, Joo Ho Moon, Joosun Kim, Hae Weon Lee

Research output: Contribution to journalArticle

72 Citations (Scopus)

Abstract

A functional composite powder containing nano-sized NiO and YSZ (8 mol% Y2O3-ZrO2) co-conjugated on YSZ powder is synthesized by a Pechini-type polymerizable complex method in an effort to yield improved performance and durability in solid oxide fuel cells (SOFCs). A SOFC single cell made from the dual composite powder exhibited high power density of 1.2 W cm-2 and showed excellent durability (zero degradation) under a load of 1.0 A cm-2 during 550 h of operation at 800 °C. The durability is attributed to the uniform and constrained cermet structure, and particularly from the interface between Ni and YSZ, which has been modified via nano-conjugation. The proposed composite powder is an attractive candidate material for making homogeneous, durable, and highly efficient electrode microstructures.

Original languageEnglish
Pages (from-to)392-397
Number of pages6
JournalJournal of Power Sources
Volume163
Issue number1 SPEC. ISS.
DOIs
Publication statusPublished - 2006 Dec 7

Fingerprint

solid oxide fuel cells
Solid oxide fuel cells (SOFC)
durability
Powders
Nanocomposites
Durability
yttria-stabilized zirconia
composite materials
Cermet Cements
Composite materials
conjugation
radiant flux density
Loads (forces)
degradation
Degradation
microstructure
Microstructure
Electrodes
electrodes
cells

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

Kim, Sun Dong ; Moon, Hwan ; Hyun, Sang Hoon ; Moon, Joo Ho ; Kim, Joosun ; Lee, Hae Weon. / Nano-composite materials for high-performance and durability of solid oxide fuel cells. In: Journal of Power Sources. 2006 ; Vol. 163, No. 1 SPEC. ISS. pp. 392-397.
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Nano-composite materials for high-performance and durability of solid oxide fuel cells. / Kim, Sun Dong; Moon, Hwan; Hyun, Sang Hoon; Moon, Joo Ho; Kim, Joosun; Lee, Hae Weon.

In: Journal of Power Sources, Vol. 163, No. 1 SPEC. ISS., 07.12.2006, p. 392-397.

Research output: Contribution to journalArticle

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AU - Kim, Sun Dong

AU - Moon, Hwan

AU - Hyun, Sang Hoon

AU - Moon, Joo Ho

AU - Kim, Joosun

AU - Lee, Hae Weon

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AB - A functional composite powder containing nano-sized NiO and YSZ (8 mol% Y2O3-ZrO2) co-conjugated on YSZ powder is synthesized by a Pechini-type polymerizable complex method in an effort to yield improved performance and durability in solid oxide fuel cells (SOFCs). A SOFC single cell made from the dual composite powder exhibited high power density of 1.2 W cm-2 and showed excellent durability (zero degradation) under a load of 1.0 A cm-2 during 550 h of operation at 800 °C. The durability is attributed to the uniform and constrained cermet structure, and particularly from the interface between Ni and YSZ, which has been modified via nano-conjugation. The proposed composite powder is an attractive candidate material for making homogeneous, durable, and highly efficient electrode microstructures.

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