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Title: Anisotropic storage medium development in a full-scale, sodium alanate-based, hydrogen storage system

Abstract

Deuterium desorption in an automotive-scale hydrogen storage tube was studied in-situ using neutron diffraction. Gradients in the concentration of the various alanate phases were observed along the length of the tube but no significant radial anisotropy was present. In addition, neutron radiography and computed tomography showed large scale cracks and density fluctuations, confirming the presence of these structures in an undisturbed storage system. These results demonstrate that large scale storage structures are not uniform even after many absorption/desorption cycles and that movement of gaseous hydrogen cannot be properly modeled by a simple porous bed model. Furthermore, the evidence indicates that there is slow transformation of species at one end of the tube indicating loss of catalyst functionality. Lastly, these observations explain the unusually fast movement of hydrogen in a full scale system and shows that loss of capacity is not occurring uniformly in this type of hydrogen-storage system.

Authors:
 [1];  [2];  [3];  [3]
  1. General Motors R&D, Warren, MI (United States)
  2. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Temperature Materials Laboratory (HTML); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Fuel Cell Technologies Office; USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office; USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1271870
Alternate Identifier(s):
OSTI ID: 1333868; OSTI ID: 1396462
Report Number(s):
SAND-2015-2993J
Journal ID: ISSN 0360-3199; VT0503000; KC0402010; CEVT005; ERKCSNX
Grant/Contract Number:  
AC05-00OR22725; AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
International Journal of Hydrogen Energy
Additional Journal Information:
Journal Volume: 41; Journal Issue: 31; Journal ID: ISSN 0360-3199
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 08 HYDROGEN; Sodium alanate; Neutron diffraction; Neutron computed tomography; Hydrogen storage; Vehicle scale; Catalyzed desorption; sodium alanate; neutron diffraction; neutron computed tomography; hydrogen storage; vehicle scale; catalyzed desorption

Citation Formats

Jorgensen, Scott W., Johnson, Terry A., Payzant, E. Andrew, and Bilheux, Hassina Z. Anisotropic storage medium development in a full-scale, sodium alanate-based, hydrogen storage system. United States: N. p., 2016. Web. https://doi.org/10.1016/j.ijhydene.2016.05.057.
Jorgensen, Scott W., Johnson, Terry A., Payzant, E. Andrew, & Bilheux, Hassina Z. Anisotropic storage medium development in a full-scale, sodium alanate-based, hydrogen storage system. United States. https://doi.org/10.1016/j.ijhydene.2016.05.057
Jorgensen, Scott W., Johnson, Terry A., Payzant, E. Andrew, and Bilheux, Hassina Z. Sat . "Anisotropic storage medium development in a full-scale, sodium alanate-based, hydrogen storage system". United States. https://doi.org/10.1016/j.ijhydene.2016.05.057. https://www.osti.gov/servlets/purl/1271870.
@article{osti_1271870,
title = {Anisotropic storage medium development in a full-scale, sodium alanate-based, hydrogen storage system},
author = {Jorgensen, Scott W. and Johnson, Terry A. and Payzant, E. Andrew and Bilheux, Hassina Z.},
abstractNote = {Deuterium desorption in an automotive-scale hydrogen storage tube was studied in-situ using neutron diffraction. Gradients in the concentration of the various alanate phases were observed along the length of the tube but no significant radial anisotropy was present. In addition, neutron radiography and computed tomography showed large scale cracks and density fluctuations, confirming the presence of these structures in an undisturbed storage system. These results demonstrate that large scale storage structures are not uniform even after many absorption/desorption cycles and that movement of gaseous hydrogen cannot be properly modeled by a simple porous bed model. Furthermore, the evidence indicates that there is slow transformation of species at one end of the tube indicating loss of catalyst functionality. Lastly, these observations explain the unusually fast movement of hydrogen in a full scale system and shows that loss of capacity is not occurring uniformly in this type of hydrogen-storage system.},
doi = {10.1016/j.ijhydene.2016.05.057},
journal = {International Journal of Hydrogen Energy},
number = 31,
volume = 41,
place = {United States},
year = {2016},
month = {6}
}

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    Works referencing / citing this record:

    Characterization of Crystallographic Structures Using Bragg-Edge Neutron Imaging at the Spallation Neutron Source
    journal, December 2017