Efficient Cathodes for Solid Oxide Fuel Cells Prepared by Polymeric Precursor Infiltration

Abstract

A novel technique based on polymeric precursor infiltration into porous layers was developed to process composite materials as highly efficient cathode/current collector structures for solid oxide fuel cells (SOFCs). Powder based Pt and YSZ inks were used to form porous cathode/current collector layers on electrolyte supported symmetrical structures that were infiltrated with polymeric LSM precursor. Electrochemical testing of the samples was performed by impedance spectroscopy techniques. Polarization resistance of the cathode was as low as 0.022 Ohm.cm2 at 800°C demonstrating the potential of fabricating highly efficient cathodes. Infiltration process led to a stable composite of the cathode/current collector structures, ensuring a high current collection efficiency and long term stability at operational temperatures.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Fuel Cells; Energy Conversion

International Standard Serial Number (ISSN)

0013-4651

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2012 The Electrochemical Society (ECS), All rights reserved.

Publication Date

01 Jan 2012

Link to Full Text

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