LSCF-SDC core-shell high-performance durable composite cathode

Seungho Lee; Hwa Seob Song; Sang Hoon Hyun; Joosun Kim; Jooho Moon

doi:10.1016/j.jpowsour.2009.06.079

LSCF-SDC core-shell high-performance durable composite cathode

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article

40 Citations (Scopus)

Abstract

Core-shell type La_0.6Sr_0.4Co_0.2Fe_0.8O_3-d (LSCF)-Sm_0.2Ce_0.8O_2-d (SDC) powders are synthesized to achieve a high-performance durable cathode for intermediate temperature solid oxide fuel cells (IT-SOFCs). The SDC core size is controlled so that all core particles are surrounded by the LSCF particles with no unattached spots. Such a core-shell composite cathode develops an ideal microstructure with improved phase contiguity, homogeneity, and maximized triple-phase boundary density. The cathode that involves an SDC core of 500 nm exhibits the lowest interfacial polarization resistance (0.265 Ω cm² at 650 °C), as well as long-term stability during both thermo-cyclic and electrochemically accelerated tests.

Original language	English
Pages (from-to)	118-123
Number of pages	6
Journal	Journal of Power Sources
Volume	195
Issue number	1
DOIs	https://doi.org/10.1016/j.jpowsour.2009.06.079
Publication status	Published - 2010 Jan 1

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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

Lee, S., Song, H. S., Hyun, S. H., Kim, J., & Moon, J. (2010). LSCF-SDC core-shell high-performance durable composite cathode. Journal of Power Sources, 195(1), 118-123. https://doi.org/10.1016/j.jpowsour.2009.06.079

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10.1016/j.jpowsour.2009.06.079