FUNDAMENTAL SAFETY TESTING AND ANALYSIS OF HYDROGEN STORAGE MATERIALS AND SYSTEMS Page: 2 of 6
This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to UNT Digital Library by the UNT Libraries Government Documents Department.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
WSRC-STI-2007-00632
Quarterly Progress Report
Project Title: Fundamental Safety Testing and Analysis of Hydrogen
Storage Materials and Systems
Project Period: 7/1/07-9/30/07
Date of Report: 10/31/07
Contacts: Donald Anton, Savannah River National Laboratory
Kyle Brinkman, Savannah River National Laboratory
Josh Gray, Savannah River National Laboratory
DOE Manager: Ned Stetson, DOE HQ Technology Manager
Project Objective:
In order to design commercially viable solid state hydrogen storage systems, it is important to
understand and quantify the environmental reactivity of the active species in possible
environmental exposure scenarios. This report gives a summary of standardized UN tests along
with calorimetric experiments performed in order to quantify both the rate and the amount of the
energy released; as well as characterize the reaction products resulting from water exposure of a
lithium borohydride and magnesium hydride combination (2LiBH4 + MgH2).
Status:
Calorimetry
The heat of reaction during hydrolysis for the single components MgH2, LiBH4 and the mixture
2LiBH4 + MgH2 were measured in a mixing cell using both neutral DI water and a 1 M HCI acid
solution. Figure 1. displays the maximum heat flow normalized per weight of hydride material
(mW/mg) under acidic and neutral hydrolysis conditions. The remarkable increase in the reaction
under acidic conditions points to the role of a hydroxide and/or oxide layer which may form on the
surface of hydride particles in solution. This surface layer impedes the hydrolysis in neutral
conditions, however strong acidic solutions seem to remove this layer allowing for quick reaction
times. The effect of environmentally accessible conditions such as acid rain (pH 4) displayed
similar results to neutral water.0)
E
E
0
E
E35
25-
20Macid
water1s
LIBH4
MgH2 LiBH4* 1/2MgH2
Figure 1. Maximum heat flow (mW/mg) during hydrolysis at 400C with neutral DI water and 1 M
HCI acid.
Upcoming Pages
Here’s what’s next.
Search Inside
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Anton, D; Kyle Brinkman, K & Joshua Gray, J. FUNDAMENTAL SAFETY TESTING AND ANALYSIS OF HYDROGEN STORAGE MATERIALS AND SYSTEMS, report, October 31, 2007; [Aiken, South Carolina]. (https://digital.library.unt.edu/ark:/67531/metadc889819/m1/2/: accessed April 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.