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Title: Hydrogen-storing hydride complexes

Abstract

A ternary hydrogen storage system having a constant stoichiometric molar ratio of LiNH.sub.2:MgH.sub.2:LiBH.sub.4 of 2:1:1. It was found that the incorporation of MgH.sub.2 particles of approximately 10 nm to 20 nm exhibit a lower initial hydrogen release temperature of 150.degree. C. Furthermore, it is observed that the particle size of LiBNH quaternary hydride has a significant effect on the hydrogen sorption concentration with an optimum size of 28 nm. The as-synthesized hydrides exhibit two main hydrogen release temperatures, one around 160.degree. C. and the other around 300.degree. C., with the main hydrogen release temperature reduced from 310.degree. C. to 270.degree. C., while hydrogen is first reversibly released at temperatures as low as 150.degree. C. with a total hydrogen capacity of 6 wt. % to 8 wt. %. Detailed thermal, capacity, structural and microstructural properties have been demonstrated and correlated with the activation energies of these materials.

Inventors:
 [1];  [2];  [1];  [1]
  1. Tampa, FL
  2. Venice, FL
Issue Date:
Research Org.:
Univ. of South Florida, Tampa, FL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1041011
Patent Number(s):
8153020
Application Number:
12/407,116
Assignee:
University of South Florida (Tampa, FL)
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 C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
DOE Contract Number:  
FG36-04GO14224
Resource Type:
Patent
Resource Relation:
Patent File Date: 2009 Mar 19
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN

Citation Formats

Srinivasan, Sesha S, Niemann, Michael U, Goswami, D Yogi, and Stefanakos, Elias K. Hydrogen-storing hydride complexes. United States: N. p., 2012. Web.
Srinivasan, Sesha S, Niemann, Michael U, Goswami, D Yogi, & Stefanakos, Elias K. Hydrogen-storing hydride complexes. United States.
Srinivasan, Sesha S, Niemann, Michael U, Goswami, D Yogi, and Stefanakos, Elias K. Tue . "Hydrogen-storing hydride complexes". United States. https://www.osti.gov/servlets/purl/1041011.
@article{osti_1041011,
title = {Hydrogen-storing hydride complexes},
author = {Srinivasan, Sesha S and Niemann, Michael U and Goswami, D Yogi and Stefanakos, Elias K},
abstractNote = {A ternary hydrogen storage system having a constant stoichiometric molar ratio of LiNH.sub.2:MgH.sub.2:LiBH.sub.4 of 2:1:1. It was found that the incorporation of MgH.sub.2 particles of approximately 10 nm to 20 nm exhibit a lower initial hydrogen release temperature of 150.degree. C. Furthermore, it is observed that the particle size of LiBNH quaternary hydride has a significant effect on the hydrogen sorption concentration with an optimum size of 28 nm. The as-synthesized hydrides exhibit two main hydrogen release temperatures, one around 160.degree. C. and the other around 300.degree. C., with the main hydrogen release temperature reduced from 310.degree. C. to 270.degree. C., while hydrogen is first reversibly released at temperatures as low as 150.degree. C. with a total hydrogen capacity of 6 wt. % to 8 wt. %. Detailed thermal, capacity, structural and microstructural properties have been demonstrated and correlated with the activation energies of these materials.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {4}
}

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