Metal ammine complexes for hydrogen storage

The hopes of using hydrogen as an energy carrier are severely dampened by the fact that there is still no safe, high-density method available for storing hydrogen. We investigate the possibility of using metal ammine complexes as a solid form of hydrogen storage. Using Mg(NH3)6Cl2 as the example, we show that it can store 9.1% hydrogen by weight in the form of ammonia. The storage is completely reversible, and by combining it with an ammonia decomposition catalyst, hydrogen can be delivered at temperatures below 620 K.

[1]  T. Madey,et al.  Decomposition of ammonia and hydrogen on Ir surfaces: structure sensitivity and nanometer-scale size effects. , 2005, Journal of the American Chemical Society.

[2]  J. Nørskov,et al.  Why the optimal ammonia synthesis catalyst is not the optimal ammonia decomposition catalyst , 2005 .

[3]  S. Yin,et al.  A mini-review on ammonia decomposition catalysts for on-site generation of hydrogen for fuel cell applications , 2004 .

[4]  Silvia Bargigli,et al.  Comparison of thermodynamic and environmental indexes of natural gas, syngas and hydrogen production processes , 2004 .

[5]  A. Züttel.  Materials for hydrogen storage , 2003 .

[6]  Jan Van herle,et al.  Ammonia as a fuel in solid oxide fuel cells , 2003 .

[7]  Andreas Züttel,et al.  LiBH4 a new hydrogen storage material , 2003 .

[8]  Robert Schlögl,et al.  Catalytic synthesis of ammonia-a "never-ending story"? , 2003, Angewandte Chemie.

[9]  E. Cowling,et al.  The Nitrogen Cascade , 2003 .

[10]  Shimshon Gottesfeld,et al.  Effect of Ammonia as Potential Fuel Impurity on Proton Exchange Membrane Fuel Cell Performance , 2002 .

[11]  Andreas Züttel,et al.  Hydrogen storage in carbon nanostructures , 2002 .

[12]  A. Züttel,et al.  Hydrogen-storage materials for mobile applications , 2001, Nature.

[13]  D. Goodman,et al.  Catalytic ammonia decomposition: COx-free hydrogen production for fuel cell applications , 2001 .

[14]  K. Seppelt,et al.  Mg(NH3)6Hg22, a Mercury Intercalation Compound , 2000 .

[15]  Viktor Hacker,et al.  Alkaline fuel cells applications , 2000 .

[16]  J. Nørskov,et al.  Improved adsorption energetics within density-functional theory using revised Perdew-Burke-Ernzerhof functionals , 1999 .

[17]  B. Bogdanovic,et al.  Ti-doped alkali metal aluminium hydrides as potential novel reversible hydrogen storage materials , 1997 .

[18]  R. Wiswall,et al.  Hydrogen storage in metal hydrides. , 1974, Science.

[19]  I. Olovsson.  Packing principles in the structures of metal ammine salts , 1965 .

[20]  E. Lépinasse.  Production de froid par couplage de réacteurs solide-gaz I: Analyse des performances de tels systèmesCold production through coupling of solid-gas reactors I: Performance analysis , 1994 .