Hydrogen storage devices

Energy Conversion Devices (ECD) of Troy, Michigan has announced a potential breakthrough in solid hydrogen storage. ECD is one of the parent companies of GM Ovonics, patent holder for the nickel metal hydride battery. A hydride, by definition, is a solid material that stores hydrogen. 

In this process, aluminum acts as a compact hydrogen storage device because 1 kg of aluminum can theoretically produce up to 0.111 kg of hydrogen (or 11.1%). 

S.R. Ovshinsky, K. Sapru, K. Dec, K. Hong, US Patent 4,431,561 Hydrogen storage materials and method of making same. Energy Conversion Devices, Troy, MI (1984). 

With respect to hydrogen storage, R D is oriented to the development of lightweight, low cost, and low volume hydrogen devices (storage capacity target > 6.5 wt%). Examples of projects include ... 

It was shown that the AB5/ABS composite tolerated the hydrogenation effects on metal particles, with no losses in hydrogenation kinetics. The results indicated that the compositions are suitable for metal hydride based hydrogen storage devices. 

Because of their diverse structure, one-third of the tubes are expected to possess metallic character and the remaining two-thirds to behave as semiconductors [2, 3]. CNTs represent potential candidates to be used in field emission [4-6] and nanoelectrical devices [6-10], components of electrochemical energy [11, 12] and hydrogen storage systems [13, 14] and as components in composite materials [15-17]. They represent the ultimate carbon fiber, exhibiting exceptional mechanical properties [18-21] by being up to 100 times stronger than steel [22]. 

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