Method to prevent sulfur accumulation in membrane electrode assembly

Title: Method to prevent sulfur accumulation in membrane electrode assembly

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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:: Steimke, John L; Steeper, Timothy J; Herman, David T

Issue Date:: 2014-04-29

Research Org.:: Savannah River Site (SRS), Aiken, SC (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1130082

Patent Number(s):: 8709229

Application Number:: 12/930,486

Assignee:: Savannah River Nuclear Solutions, LLC (Aiken, SC)

Patent Classifications (CPCs):: Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

C - CHEMISTRY C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES C25B - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS

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Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
Y02E60/36 - Hydrogen production from non-carbon containing sources

C - CHEMISTRY C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES C25B - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS
C25B15/02 - Process control or regulation
C25B1/02 - of hydrogen or oxygen
C25B1/04 - by electrolysis of water
C25B1/00 - Electrolytic production of inorganic compounds or non-metals

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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.

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                    Steimke, John L, Steeper, Timothy J, & Herman, David T. Method to prevent sulfur accumulation in membrane electrode assembly.  United States.

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                    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.

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@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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