Solid Oxide Fuel Cell Cathodes: Importance of Chemical Composition and Morphology | Sciact - CRIS-system of Boreskov Institute of Catalysis

Solid Oxide Fuel Cell Cathodes: Importance of Chemical Composition and Morphology Full article

Journal

Catalysis for Sustainable Energy
ISSN: 2084-6819

Output data

Year: 2015, Volume: 2, Number: 1, Pages: 57-70 Pages count : 14 DOI: 10.1515/cse-2015-0004

Tags

SOFC, Cathodes, Perovskites, Fluorites, Composites, Isotope exchange, Relaxation studies, Oxygen mobility, Power density

Authors

Sadykov Vladislav A. ^1,2 , Muzykantov Vitaliy S. ¹ , Yeremeev Nikita F. ¹ , Pelipenko Vladimir V. ¹ , Sadovskaya Ekaterina M. ¹ , Bobin Alexey S. ¹ , Fedorova Yulia E. ^1,3 , Amanbaeva Daiana G. ^1,4 , Smirnova Alevtina L. ⁵

Affiliations

1	Boreskov Institute of Catalysis, 630090 Novosibirsk, Russian Federation
2	Novosibirsk State University, 630090 Novosibirsk, Russian Federation
3	Novosibirsk State Pedagogical University, 630126 Novosibirsk, Russian Federation
4	Novosibirsk State Technical University, 630073 Novosibirsk, Russian Federation
5	South Dakota School of Mines & Technology, SD 57701, Rapid City, USA

Funding (8)

1	North Atlantic Treaty Organization	SfP-980878
2	European Commission	20089 FP6-2004-ENERGY-3 SOFC600
3	European Commission	33410 FP6-2004-NMP-TI-4 STREP MATSILC
4	Президиум РАН	50
5	Siberian Branch of the Russian Academy of Sciences	95
6	Siberian Branch of the Russian Academy of Sciences	57
7	Siberian Branch of the Russian Academy of Sciences	8
8	Jülich Research Centre	BMBF-Client Russia Joint research project: N-KATH

The main aspects of the cathode materials morphology for Intermediate Temperature Solid Oxide Fuel Cells (IT SOFC) are considered in this paper. The approaches for estimation of their basic properties, e.g. oxygen mobility and surface reactivity, are described and the results of different techniques (e.g. weight and conductivity relaxation, oxygen isotope exchange) application for studies of powders and dense ceramic materials are compared. The Ruddlesden-Popper type phases (e.g. Pr2NiO4) provide enhanced oxygen mobility due to cooperative mechanism of oxygen interstitial migration. For perovskites, the oxygen mobility is increased by doping, which generates oxygen vacancies or decreases metal-oxygen bond strength. Nonadditive increasing of the oxygen diffusion coefficients found that for perovskite-fluorite nanocomposites, it can be explained by the fast oxygen migration along perovskite - fluorite interfaces. Functionally graded nanocomposite cathodes provide the highest power density, the lowest area specific polarization resistance, and the best stability to degradation caused by the surface layer carbonization/ hydroxylation, thus being the most promising for thin film IT SOFC design.

Sadykov V.A. , Muzykantov V.S. , Yeremeev N.F. , Pelipenko V.V. , Sadovskaya E.M. , Bobin A.S. , Fedorova Y.E. , Amanbaeva D.G. , Smirnova A.L.
Solid Oxide Fuel Cell Cathodes: Importance of Chemical Composition and Morphology

Catalysis for Sustainable Energy. 2015. V.2. N1. P.57-70. DOI: 10.1515/cse-2015-0004 РИНЦ AN OpenAlex

Full text from publisher

Submitted:	Dec 31, 2014
Published print:	Jan 31, 2015
Accepted:	Oct 25, 2015
Published online:	Dec 31, 2015

Elibrary:	30705966
Chemical Abstracts:	2019:745085
OpenAlex:	W2336359937

DB	Citing
Elibrary	14
OpenAlex	20