Nickel-Metal Hydride Batteries

Abstract

Nickel–Metal Hydride (Ni-MH) batteries remain a relevant technology for safe and sustainable energy storage, especially in consumer electronics, renewable energy systems, and hybrid vehicles. The novelty of this chapter lies in its comprehensive discussion of the latest advances in metal hydride alloys for negative electrodes, particularly AB5, AB2, and A2B7 systems, highlighting their impact on hydrogen storage capacity, electrochemical performance, and long-term stability. Special attention is given to how alloy design, microstructural control, and surface modifications address the growing demand for higher energy density and durability. By bridging fundamental electrochemical principles with recent material innovations, this chapter provides new perspectives on the future potential of Ni-MH technology as a competitive and environmentally friendly alternative within the energy storage landscape.