Ni(OH)2 Tubes with Mesoscale Dimensions as Positive‐Electrode Materials of Alkaline Rechargeable Batteries

Higher capacity rechargeable batteries can be constructed by using mesoscale nickel hydroxide tubes as the positive-electrode material. The tubes were prepared by deposition of nickel ions and aqueous ammonia in an anodic alumina membrane as the template. The picture shows a high-resolution TEM image of the tubes.