In situ morphological transformation and investigation of electrocatalytic properties of cobalt oxide nanostructures toward oxygen evolution

Morphologies of cobalt oxide nanostructures were tuned from nano-needles to nano-blanket, micro-plates, and nano-sheets by introducing nickel ions, copper ions, and zinc ions into the precursor solution. This structural transformation was able to generate several specific nanostructures with high surface area, which led to an enhanced performance toward the oxygen-evolution reaction.