In-situ synthesis of LSCF-GDC composite cathode materials for solid oxide fuel cells

J. Li, Z. Wu, N. Zhang, D. Ni, K. Sun

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

La0.6 Sr0.4 Co0.2 Fe0.8 O3-δ- Gd0.2 Ce0.8 O 2-δ(LSCF-GDC) composite material is co-synthesized by the in-situ sol-gel method for Solid Oxide Fuel Cell (SOFC) cathodes. For the in-situ sol-gel method, the composite precursors are mixed at the sol state, which makes more uniform mixture than the solid state. Both the co-synthesized and physically mixed LSCF-GDC composites have been investigated for phase homogeneity by TEM energy-dispersive X-ray spectroscopy mapping and backscatter electron image. The results indicate that the dispersion of LSCF and GDC at the nanometer and micrometer scale is more homogeneous in the co-synthesized composites. Electrochemical impedance spectroscopy measurements confirm that the in-situ synthesized composites show lower polarization resistance than the physically mixed composites. An anode-supported fuel cell consisting of the in-situ synthesized LFCSGDC composite cathode demonstrates a maximum power density of 1068 mW cm-2 at 800°C, which is promising for intermediate temperature SOFC systems.

Original languageEnglish
Title of host publicationAdvances in Energy, Environment and Materials Science - Proceedings of the International Conference on Energy, Environment and Materials Science, EEMS 2015
EditorsJianhua Zhao, Yeping Wang
PublisherCRC Press/Balkema
Pages657-663
Number of pages7
ISBN (Print)9781138029316
Publication statusPublished - 2016
Externally publishedYes
EventInternational Conference on Energy, Environment and Materials Science, EEMS 2015 - Guangzhou, China
Duration: 25 Aug 201526 Aug 2015

Publication series

NameAdvances in Energy, Environment and Materials Science - Proceedings of the International Conference on Energy, Environment and Materials Science, EEMS 2015

Conference

ConferenceInternational Conference on Energy, Environment and Materials Science, EEMS 2015
Country/TerritoryChina
CityGuangzhou
Period25/08/1526/08/15

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