U.S. Philips Corporation

Frans F Westendorp

Hugo A Bruning

Hinne Zijlstra

Johannes H Van Vucht

Johannes H Van Vuoht

Johannes H Van Vocht

The invention is directed to hydrogen absorbing compounds which are useful for storing, keeping and releasing hydrogen gas. Such compounds have the formula La.sub.x Ce 1-.sub.x Ni.sub.5 where x lies between 0.4 and 1. The compounds may also be lanthanium/nicklel compounds which contain copper zirconium or yttrium.

Hydrides of the formula A.sub.D N H.sub.M

A hydrogen storage and supply device in which a pressure vessel contains a hydride of the gross formula AB.sub.n H.sub.m, in which A is calcium or one or more of the rare earth metals with or without thorium, zirconium, or hafnium, B is nickel and/or cobalt, with or without iron and/or copper, n has a value between about 3 and 8.5 and m has a value exceeding 0 and up to about 7.

Hydrogen storage and supply device

A hydride of the gross formula AB.sub.n H.sub.m, in which A is calcium or one or more of the rare earth metals with or without thorium, zirconium, or hafnium, B is nickel and/or cobalt, with or without iron and/or copper, n has a value between about 3 and 8.5 and m has a value up to about 7.

Hydrides of the formula AB.sub.n H.sub.m

An electrochemical energy conversion device, i.e. a galvanic cell using a hydrogen absorbing material to provide either a source of energy, or to absorb hydrogen to avoid overpressure in the cell. This hydrogen absorbing material is a compound of the formula LnM.sub.5 in which Ln represents a lanthanide metal and M is either cobalt or nickel.

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Emmasingel, Netherlands

Frans F Westendorp