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Title: Hydrogen Production Performance of a 10-Cell Planar Solid-Oxide Electrolysis Stack

Abstract

An experimental study is under way to assess the performance of solid-oxide cells operating in the steam electrolysis mode for hydrogen production over a temperature range of 800 to 900ºC. Results presented in this paper were obtained from a ten-cell planar electrolysis stack, with an active area of 64 cm2 per cell. The electrolysis cells are electrolytesupported, with scandia-stabilized zirconia electrolytes (~140 µm thick), nickel-cermet steam/hydrogen electrodes, and manganite air-side electrodes. The metallic interconnect plates are fabricated from ferritic stainless steel. The experiments were performed over a range of steam inlet mole fractions (0.1 - 0.6), gas flow rates (1000 - 4000 sccm), and current densities (0 to 0.38 A/cm2). Steam consumption rates associated with electrolysis were measured directly using inlet and outlet dewpoint instrumentation. Cell operating potentials and cell current were varied using a programmable power supply. Hydrogen production rates up to 100 Normal liters per hour were demonstrated. Values of area-specific resistance and stack internal temperatures are presented as a function of current density. Stack performance is shown to be dependent on inlet steam flow rate.

Authors:
; ; ;
Publication Date:
Research Org.:
Idaho National Laboratory (INL)
Sponsoring Org.:
DOE - NE
OSTI Identifier:
911083
Report Number(s):
INEEL/CON-05-02659
TRN: US0704386
DOE Contract Number:  
DE-AC07-99ID-13727
Resource Type:
Conference
Resource Relation:
Conference: 3rd International Conference on Fuel Cell Science, Engineering and Technology,Ypsilanti, MI,05/23/2005,05/25/2005
Country of Publication:
United States
Language:
English
Subject:
11 - NUCLEAR FUEL CYCLE AND FUEL MATERIALS; AVAILABILITY; CONSUMPTION RATES; CURRENT DENSITY; ELECTRODES; ELECTROLYSIS; ELECTROLYTES; FLOW RATE; FUEL CELLS; GAS FLOW; HYDROGEN PRODUCTION; INTERSTITIAL HYDROGEN GENERATION; PERFORMANCE; PLATES; STAINLESS STEELS; STEAM; Hydrogen Production

Citation Formats

James O', Brien,, Stoots, Carl, Herring, Steve, and Hartvigsen, J. Hydrogen Production Performance of a 10-Cell Planar Solid-Oxide Electrolysis Stack. United States: N. p., 2005. Web.
James O', Brien,, Stoots, Carl, Herring, Steve, & Hartvigsen, J. Hydrogen Production Performance of a 10-Cell Planar Solid-Oxide Electrolysis Stack. United States.
James O', Brien,, Stoots, Carl, Herring, Steve, and Hartvigsen, J. Sun . "Hydrogen Production Performance of a 10-Cell Planar Solid-Oxide Electrolysis Stack". United States. https://www.osti.gov/servlets/purl/911083.
@article{osti_911083,
title = {Hydrogen Production Performance of a 10-Cell Planar Solid-Oxide Electrolysis Stack},
author = {James O' and Brien, and Stoots, Carl and Herring, Steve and Hartvigsen, J},
abstractNote = {An experimental study is under way to assess the performance of solid-oxide cells operating in the steam electrolysis mode for hydrogen production over a temperature range of 800 to 900ºC. Results presented in this paper were obtained from a ten-cell planar electrolysis stack, with an active area of 64 cm2 per cell. The electrolysis cells are electrolytesupported, with scandia-stabilized zirconia electrolytes (~140 µm thick), nickel-cermet steam/hydrogen electrodes, and manganite air-side electrodes. The metallic interconnect plates are fabricated from ferritic stainless steel. The experiments were performed over a range of steam inlet mole fractions (0.1 - 0.6), gas flow rates (1000 - 4000 sccm), and current densities (0 to 0.38 A/cm2). Steam consumption rates associated with electrolysis were measured directly using inlet and outlet dewpoint instrumentation. Cell operating potentials and cell current were varied using a programmable power supply. Hydrogen production rates up to 100 Normal liters per hour were demonstrated. Values of area-specific resistance and stack internal temperatures are presented as a function of current density. Stack performance is shown to be dependent on inlet steam flow rate.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {5}
}

Conference:
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