Durability study of a vehicle-scale hydrogen storage system.

Johnson, Terry Alan; Dedrick, Daniel E

doi:10.2172/1011659

Title: Durability study of a vehicle-scale hydrogen storage system.

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Abstract

Sandia National Laboratories has developed a vehicle-scale demonstration hydrogen storage system as part of a Work for Others project funded by General Motors. This Demonstration System was developed based on the properties and characteristics of sodium alanates which are complex metal hydrides. The technology resulting from this program was developed to enable heat and mass management during refueling and hydrogen delivery to an automotive system. During this program the Demonstration System was subjected to repeated hydriding and dehydriding cycles to enable comparison of the vehicle-scale system performance to small-scale sample data. This paper describes the experimental results of life-cycle studies of the Demonstration System. Two of the four hydrogen storage modules of the Demonstration System were used for this study. A well-controlled and repeatable sorption cycle was defined for the repeated cycling, which began after the system had already been cycled forty-one times. After the first nine repeated cycles, a significant hydrogen storage capacity loss was observed. It was suspected that the sodium alanates had been affected either morphologically or by contamination. The mechanisms leading to this initial degradation were investigated and results indicated that water and/or air contamination of the hydrogen supply may have lead to oxidation of themore »« less

Authors:: Johnson, Terry Alan; Dedrick, Daniel E

Publication Date:: Mon Nov 01 00:00:00 EDT 2010

Research Org.:: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1011659

Report Number(s):: SAND2010-7802
TRN: US201109%%721

DOE Contract Number:: AC04-94AL85000

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 08 HYDROGEN; CAPACITY; CARBON DIOXIDE; CHEMICAL COMPOSITION; CONTAMINATION; DEACTIVATION; HYDRIDES; HYDROGEN; HYDROGEN STORAGE; KINETICS; LIFE CYCLE; MANAGEMENT; MORPHOLOGY; MOTORS; OXIDATION; PERFORMANCE; SODIUM; SODIUM OXIDES; SORPTION; TRANSPORT

Citation Formats


                    Johnson, Terry Alan, Dedrick, Daniel E, and Behrens, Richard, Jr. Durability study of a vehicle-scale hydrogen storage system..  United States: N. p., 2010. 
        Web.  doi:10.2172/1011659.

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                    Johnson, Terry Alan, Dedrick, Daniel E, & Behrens, Richard, Jr. Durability study of a vehicle-scale hydrogen storage system..  United States.  https://doi.org/10.2172/1011659

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                    Johnson, Terry Alan, Dedrick, Daniel E, and Behrens, Richard, Jr. 2010.  
        "Durability study of a vehicle-scale hydrogen storage system.".  United States.  https://doi.org/10.2172/1011659.  https://www.osti.gov/servlets/purl/1011659.

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@article{osti_1011659,

  title        = {Durability study of a vehicle-scale hydrogen storage system.},

  author       = {Johnson, Terry Alan and Dedrick, Daniel E and Behrens, Richard, Jr.},

  abstractNote = {Sandia National Laboratories has developed a vehicle-scale demonstration hydrogen storage system as part of a Work for Others project funded by General Motors. This Demonstration System was developed based on the properties and characteristics of sodium alanates which are complex metal hydrides. The technology resulting from this program was developed to enable heat and mass management during refueling and hydrogen delivery to an automotive system. During this program the Demonstration System was subjected to repeated hydriding and dehydriding cycles to enable comparison of the vehicle-scale system performance to small-scale sample data. This paper describes the experimental results of life-cycle studies of the Demonstration System. Two of the four hydrogen storage modules of the Demonstration System were used for this study. A well-controlled and repeatable sorption cycle was defined for the repeated cycling, which began after the system had already been cycled forty-one times. After the first nine repeated cycles, a significant hydrogen storage capacity loss was observed. It was suspected that the sodium alanates had been affected either morphologically or by contamination. The mechanisms leading to this initial degradation were investigated and results indicated that water and/or air contamination of the hydrogen supply may have lead to oxidation of the hydride and possibly kinetic deactivation. Subsequent cycles showed continued capacity loss indicating that the mechanism of degradation was gradual and transport or kinetically limited. A materials analysis was then conducted using established methods including treatment with carbon dioxide to react with sodium oxides that may have formed. The module tubes were sectioned to examine chemical composition and morphology as a function of axial position. The results will be discussed.},

  doi          = {10.2172/1011659},

  url          = {https://www.osti.gov/biblio/1011659},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Mon Nov 01 00:00:00 EDT 2010},

  month        = {Mon Nov 01 00:00:00 EDT 2010}

}

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