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 › peer-review

41 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

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

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title = "LSCF-SDC core-shell high-performance durable composite cathode",

abstract = "Core-shell type La0.6Sr0.4Co0.2Fe0.8O3-d (LSCF)-Sm0.2Ce0.8O2-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.",

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AU - Moon, Jooho

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