Redox Stable Electrodes for Hydrogen Producing Solid Oxide Electrolyzer

Author

Yong Wook Sin
Vladimir Petrovsky
Harlan U. Anderson, Missouri University of Science and TechnologyFollow

Abstract

This report focuses on a study which measured the electrical conductivity of LSCrM, LSCr and LSM as a function of oxygen activity and temperature to evaluate the chemical and mechanical stability of the materials as an electrode in a solid oxide fuel-fed electrolyzer cell (SOFEC). the LSCrM symmetrical cell was fabricated using La_0.75Sr_0.25Cr_0.5Mn_0.5O₃ (LSCrM) powder and evaluated using electrical conductivity, impedance spectroscopy, current density and power density as a function of temperature. during the evaluation, symmetrical cell tests and fuel cell tests were performed as a function of temperature. Silver (Ag) and platinum (Pt) were also used to compare the cell performance with and without precious metal as a current collector. Although the OCV was in the same level (about 1.2 V) in dry 10%H2-90%N2 with both Ag and Pt collectors, the current density and power density of the cell was increased more than 20 times when Pt was used as a current collector. copyright the Electrochemical Society.

Recommended Citation

Y. W. Sin et al., "Redox Stable Electrodes for Hydrogen Producing Solid Oxide Electrolyzer," ECS Transactions, vol. 2, no. 29, pp. 1 - 7, The Electrochemical Society, Jan 2006.

The definitive version is available at https://doi.org/10.1149/1.2815944

Department(s)

Materials Science and Engineering

International Standard Book Number (ISBN)

978-156677602-8

International Standard Serial Number (ISSN)

1938-6737; 1938-5862

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 The Electrochemical Society, All rights reserved.

Publication Date

01 Jan 2006