Facile Synthesis of Stacked Ni(OH)2 Hexagonal Nanoplates in a Large Scale

Using NiCl2 and NaOH as raw materials, stacked Ni(OH)2 hexagonal nanoplates with different edge lengths were prepared in a large scale by a simple hydrothermal route. The stacked Ni(OH)2 structure was composed of a certain amount of parallel Ni(OH)2 hexagonal nanoplates along the (001) direction. Each parallel Ni(OH)2 nanoplate had a single-crystal structure, and the exposed planes were (001), (00−1), and (100). The formation mechanism of the stacked Ni(OH)2 structures was discussed on the basis of the Ni(OH)2 crystal structure.