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Title: Method to prevent sulfur accumulation in membrane electrode assembly

Abstract

A method of operating a hybrid sulfur electrolyzer to generate hydrogen is provided that includes the steps of providing an anolyte with a concentration of sulfur dioxide, and applying a current. During steady state generation of hydrogen a plot of applied current density versus concentration of sulfur dioxide is below a boundary line. The boundary line may be linear and extend through the origin of the graph with a slope of 0.001 in which the current density is measured in mA/cm2 and the concentration of sulfur dioxide is measured in moles of sulfur dioxide per liter of anolyte.

Inventors:
; ;
Issue Date:
Research Org.:
Savannah River Site (SRS), Aiken, SC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1130082
Patent Number(s):
8,709,229
Application Number:
12/930,486
Assignee:
Savannah River Nuclear Solutions, LLC (Aiken, SC)
DOE Contract Number:  
AC09-08SR22470
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011 Jan 07
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Steimke, John L, Steeper, Timothy J, and Herman, David T. Method to prevent sulfur accumulation in membrane electrode assembly. United States: N. p., 2014. Web.
Steimke, John L, Steeper, Timothy J, & Herman, David T. Method to prevent sulfur accumulation in membrane electrode assembly. United States.
Steimke, John L, Steeper, Timothy J, and Herman, David T. Tue . "Method to prevent sulfur accumulation in membrane electrode assembly". United States. https://www.osti.gov/servlets/purl/1130082.
@article{osti_1130082,
title = {Method to prevent sulfur accumulation in membrane electrode assembly},
author = {Steimke, John L and Steeper, Timothy J and Herman, David T},
abstractNote = {A method of operating a hybrid sulfur electrolyzer to generate hydrogen is provided that includes the steps of providing an anolyte with a concentration of sulfur dioxide, and applying a current. During steady state generation of hydrogen a plot of applied current density versus concentration of sulfur dioxide is below a boundary line. The boundary line may be linear and extend through the origin of the graph with a slope of 0.001 in which the current density is measured in mA/cm2 and the concentration of sulfur dioxide is measured in moles of sulfur dioxide per liter of anolyte.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {4}
}

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Works referenced in this record:

Sulfur dioxide depolarized electrolysis for hydrogen production: Development status
journal, January 1982


Effect of Water on the Electrochemical Oxidation of Gas-Phase SO[sub 2] in a PEM Electrolyzer for H[sub 2] Production
journal, January 2007

  • Staser, John; Ramasamy, Ramaraja P.; Sivasubramanian, Premkumar
  • Electrochemical and Solid-State Letters, Vol. 10, Issue 11
  • DOI: 10.1149/1.2771529