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Issue 1, 2011
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Single crystalline La0.5Sr0.5MnO3 microcubes as cathode of solid oxide fuel cell

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Abstract

The efficiency of solid oxide fuel cells (SOFCs) is heavily dependent on the electrocatalytic activity of the cathode toward the oxygen reduction reaction (ORR). In order to achieve better cathode performance, single crystalline La0.5Sr0.5MnO3 (LSM) microcubes with the {200} facets have been synthesized by the hydrothermal method. It is found that the LSM microcubes exhibit lower polarization resistance than the conventional polycrystalline La0.8Sr0.2MnO3 powder in air from 700 °C to 900 °C. The ORR activation energy of the LSM microcubes is lower than that of the conventional powder. The ORR kinetics for the microcubes is limited by the charge transfer step while that for the conventional powder is dominated by the oxygen adsorption and dissociation on the cathode surface.

Graphical abstract: Single crystalline La0.5Sr0.5MnO3 microcubes as cathode of solid oxide fuel cell

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Publication details

The article was received on 22 Jul 2010, accepted on 13 Sep 2010 and first published on 03 Nov 2010


Article type: Paper
DOI: 10.1039/C0EE00300J
Citation: Energy Environ. Sci., 2011,4, 139-144
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    Single crystalline La0.5Sr0.5MnO3 microcubes as cathode of solid oxide fuel cell

    M. Zhi, G. Zhou, Z. Hong, J. Wang, R. Gemmen, K. Gerdes, A. Manivannan, D. Ma and N. Wu, Energy Environ. Sci., 2011, 4, 139
    DOI: 10.1039/C0EE00300J

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