Several metal hydrides have been developed, bur none of them satisfy all of these requirements. Some of the more common drawbacks of the presently available materials are (a) hydrogen-to-metal ratios are too low; (b) metals involved are too costly; (c) the absorption or release of hydrogen is difficult, slow, or sensitive to the poisoning phenomena: (d) a significant hysteresis is exhibited. The available materials for hydrogen storage are briefly reviewed and a more detailed overview is given of two classes of materials that are being developed in the author's laboratory, namely zirconium-based Laves phase intermetallic compound and b.c.c. solid solutions based on niobium.