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Title: High Temperature Electrolysis using Electrode-Supported Cells

Abstract

An experimental study is under way to assess the performance of electrode-supported solid-oxide cells operating in the steam electrolysis mode for hydrogen production. The cells currently under study were developed primarily for the fuel cell mode of operation. Results presented in this paper were obtained from single cells, with an active area of 16 cm2 per cell. The electrolysis cells are electrode-supported, with yttria-stabilized zirconia (YSZ) electrolytes (~10 µm thick), nickel-YSZ steam/hydrogen electrodes (~1400 µm thick), and manganite (LSM) air-side electrodes (~90 µm thick). The purpose of the present study was to document and compare the performance and degradation rates of these cells in the fuel cell mode and in the electrolysis mode under various operating conditions. Initial performance was documented through a series of DC potential sweeps and AC impedance spectroscopy measurements. Degradation was determined through long-duration testing, first in the fuel cell mode, then in the electrolysis mode over more than 500 hours of operation. Results indicate accelerated degradation rates in the electrolysis mode compared to the fuel cell mode, possibly due to electrode delamination. The paper also includes details of the single-cell test apparatus developed specifically for these experiments.

Authors:
;
Publication Date:
Research Org.:
Idaho National Laboratory (INL)
Sponsoring Org.:
DOE - NE
OSTI Identifier:
989880
Report Number(s):
INL/CON-10-18770
TRN: US1007176
DOE Contract Number:  
DE-AC07-05ID14517
Resource Type:
Conference
Resource Relation:
Conference: European Fuel Cell Forum 2010,Lucerne, Switzerland,06/29/2010,07/02/2010
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; ELECTRODES; ELECTROLYSIS; ELECTROLYTES; FUEL CELLS; HYDROGEN PRODUCTION; IMPEDANCE; PERFORMANCE; SPECTROSCOPY; STEAM; TESTING; electrode-supported cells; high temperature electrolysis; hydrogen production

Citation Formats

J. E. O'Brien, and C. M. Stoots. High Temperature Electrolysis using Electrode-Supported Cells. United States: N. p., 2010. Web.
J. E. O'Brien, & C. M. Stoots. High Temperature Electrolysis using Electrode-Supported Cells. United States.
J. E. O'Brien, and C. M. Stoots. Thu . "High Temperature Electrolysis using Electrode-Supported Cells". United States. https://www.osti.gov/servlets/purl/989880.
@article{osti_989880,
title = {High Temperature Electrolysis using Electrode-Supported Cells},
author = {J. E. O'Brien and C. M. Stoots},
abstractNote = {An experimental study is under way to assess the performance of electrode-supported solid-oxide cells operating in the steam electrolysis mode for hydrogen production. The cells currently under study were developed primarily for the fuel cell mode of operation. Results presented in this paper were obtained from single cells, with an active area of 16 cm2 per cell. The electrolysis cells are electrode-supported, with yttria-stabilized zirconia (YSZ) electrolytes (~10 µm thick), nickel-YSZ steam/hydrogen electrodes (~1400 µm thick), and manganite (LSM) air-side electrodes (~90 µm thick). The purpose of the present study was to document and compare the performance and degradation rates of these cells in the fuel cell mode and in the electrolysis mode under various operating conditions. Initial performance was documented through a series of DC potential sweeps and AC impedance spectroscopy measurements. Degradation was determined through long-duration testing, first in the fuel cell mode, then in the electrolysis mode over more than 500 hours of operation. Results indicate accelerated degradation rates in the electrolysis mode compared to the fuel cell mode, possibly due to electrode delamination. The paper also includes details of the single-cell test apparatus developed specifically for these experiments.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {7}
}

Conference:
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