A Mechanism for Non-stoichiometry in the Lithium Amide/Lithium Imide Hydrogen Storage Reaction

2007 ◽  
Vol 129 (6) ◽  
pp. 1594-1601 ◽  
Author(s):  
William I. F. David ◽  
Martin O. Jones ◽  
Duncan H. Gregory ◽  
Catherine M. Jewell ◽  
Simon R. Johnson ◽  
...  
Author(s):  
Joshua Makepeace ◽  
Jake M Brittain ◽  
Alisha Sukhwani Manghnani ◽  
Claire Murray ◽  
Thomas J Wood ◽  
...  

Li-N-H materials, particularly lithium amide and lithium imide, have been explored for use in a variety of energy storage applications in recent years. Compositional variation within the parent lithium imide,...


ChemInform ◽  
2007 ◽  
Vol 38 (18) ◽  
Author(s):  
William I. F. David ◽  
Martin O. Jones ◽  
Duncan H. Gregory ◽  
Catherine M. Jewell ◽  
Simon R. Johnson ◽  
...  

2006 ◽  
Vol 110 (41) ◽  
pp. 20710-20718 ◽  
Author(s):  
Tippawan Markmaitree ◽  
Ruiming Ren ◽  
Leon L. Shaw

2005 ◽  
Vol 71 (19) ◽  
Author(s):  
Kazutoshi Miwa ◽  
Nobuko Ohba ◽  
Shin-ichi Towata ◽  
Yuko Nakamori ◽  
Shin-ichi Orimo

2004 ◽  
Vol 837 ◽  
Author(s):  
Frederick E. Pinkerton

ABSTRACTKinetics of the lithium amide (LiNH2) decomposition reaction 2 LiNH2 → Li2NH + NH3 were determined using thermogravimetric analysis (TGA). LiNH2 is a primary component of the hydrided state of Li3N- and Li2NH-based storage materials. Its decomposition by ammonia release, and the resulting degradation of hydrogen storage capacity, has important implications for the durability of Li-N-H storage systems. Fine powders of LiNH2 were prepared by ball milling for 20 min. Kinetic parameters were extracted from a set of TGA weight loss curves taken at different heating rates between 1 and 20°C/min, and the activation energy Ea was determined to be 124 kJ/mole. Although decomposition occurs slowly below 300°C, isothermal TGA measurements on Li3N demonstrate that its cumulative effect is large in real Li-N-H systems, where LiNH2-containing hydrided material is held at elevated temperature under dynamic gas flow.


ChemInform ◽  
2007 ◽  
Vol 38 (5) ◽  
Author(s):  
Tippawan Markmaitree ◽  
Ruiming Ren ◽  
Leon L. Shaw

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