PREPARATION OF MORPHOLOGY CONTROLLED NANOSIZED Ni(OH)_2 AND ITS APPLICATION IN SUPERCAPACITOR

摘要

Nanoscaled Ni(OH)_2 was prepared with a new method involving separate nucleation and aging steps in a colloid mill with NaBH_4 as the reducing agent. The as-synthesized Ni(OH)_2 nanomaterials were investigated by power X-ray diffraction (XRD), scanning Electron microscopy(SEM). The electrochemical behavior of Ni(OH)_2 is further investigated as electrode materials for supercapacitors. We find that when the crystallization temperature is 90°C, the nanomaterials achieve the best electrochemical behavior.