Hydride storage unit

H2YCELL hydride storage unit manufactured by Laboratory Data Control... 

Figure 5. Hydride storage unit (90 SCF) manufactured by Ergenics...

The hydrogen produced by the electrolyser is initially stored in an intermediate buffer of 1 m3 water volume, from which it can be transferred to one of the two storage systems metal hydride storage or pressurised gas (at 200 bar). The metal hydride storage system manufactured by GfE mbH consists of an intermediate buffer, a hydrogen purification unit, a metal hydride container and a cooling water supply system. 

Hydrogen-storage alloys (18,19) are commercially available from several companies in the United States, Japan, and Europe. A commercial use has been developed in rechargeable nickel—metal hydride batteries which are superior to nickel—cadmium batteries by virtue of improved capacity and elimination of the toxic metal cadmium (see BATTERIES, SECONDARYCELLS-ALKALINe). Other uses are expected to develop in nonpolluting internal combustion engines and fuel cells (qv), heat pumps and refrigerators, and electric utility peak-load shaving. 

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