Ni doped La0.6Sr0.4FeO3-δ symmetrical electrode for solid oxide fuel cells

doi:10.1016/S1872-2067(15)61116-0

Chinese Journal of Catalysis ›› 2016, Vol. 37 ›› Issue (8): 1347-1353.DOI: 10.1016/S1872-2067(15)61116-0

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Ni doped La_0.6Sr_0.4FeO_3-δ symmetrical electrode for solid oxide fuel cells

Zhaohui Ma^a, Chunwen Sun^a,b, Chao Ma^c, Hao Wu^d, Zhongliang Zhan^d, Liquan Chen^a

a. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
b. Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; National Center for Nanoscience and Technology (NCNST), Beijing 100083, China;
c. Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, Anhui, China;
d. CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

Received:2016-02-13 Revised:2016-04-11 Online:2016-07-29 Published:2016-08-01
Contact: Chunwen Sun, Zhongliang Zhan
Supported by:
This work was supported by the National Natural Science Foundation of China (51372271, 51172275) and the National Basic Research Program of China (973 Program, 2012CB215402).

Abstract

Abstract:

The conventional Ni cermet anode suffers from severe carbon deposition and sulfur poisoning when fossil fuels are used. Alternative anode materials are desired for high performance hydrocarbon fuel solid oxide fuel cells (SOFCs). We report the rational design of a very active Ni doped La_0.6Sr_0.4FeO_3-δ (LSFN) electrode for hydrocarbon fuel SOFCs. Homogeneously dispersed Ni-Fe alloy nanoparticles were in situ extruded onto the surface of the LSFN particles during the operation of the cell. Symmetric SOFC single cells were prepared by impregnating a LSFN precursor solution onto a YSZ (yttria stabilized zirconia) monolithic cell with a subsequent heat treatment. The open circuit voltage of the LSFN symmetric cell reached 1.18 and 1.0 V in humidified C₃H₈ and CH₄ at 750 ℃, respectively. The peak power densities of the cells were 400 and 230 mW/cm² in humidified C₃H₈ and CH₄, respectively. The electrode showed good stability in long term testing, which revealed LSFN has good catalytic activity for hydrocarbon fuel oxidation.

Key words: Solid oxide fuel cells, Ni doped La_0.6Sr_0.4FeO_3-δ, Symmetrical electrode, Hydrocarbon fuels

Zhaohui Ma, Chunwen Sun, Chao Ma, Hao Wu, Zhongliang Zhan, Liquan Chen. Ni doped La_0.6Sr_0.4FeO_3-δ symmetrical electrode for solid oxide fuel cells[J]. Chinese Journal of Catalysis, 2016, 37(8): 1347-1353.

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Ni doped La_0.6Sr_0.4FeO_3-δ symmetrical electrode for solid oxide fuel cells

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