Development of Hydrogen-Storage Alloys for High-Power Nickel-Metal Hydride Batteries

Abstract

The development of hydrogen-storage alloys used in high-power nickel/metal hydride batteries has become an important research field. Various methods of improving the high-rate dischargeability of the metal-hydride negative electrode are discussed. Our recent investigations show that optimization of rare-earth composition, combined with appropriate amounts of B or Mo additive, significantly improves the high-rate capability of hydrogen-storage alloys, which may be suitable for use in high-power Ni/MH batteries.