Nickel based active materials for the high performance supercapacitor

Abstract

The MOF(Metal-organic Frameworks) was used as a active material of supercapacitor. The Ni-aph-MOF was deposited on the nickel plate by using slurry with binder. The capacitance of Ni-aph-MOF was showed high performance due to its high surface area and easily intercalatable molecular structure. And the performance of Ni(OH)2 based supercapacitor was enhanced by using current collector. The ultra-thin Ni(OH)2 active layer was deposited on the hierarchical current collector by the electrodeposition method. The improved properties of the supercapacitor can be attributed to the following factors. First, the 3D-current collector increases the effective surface area for the active material, which increases the capacitance value. Second, the electron pathway from Ni(OH)2 to the current collector was decreased by using the thin layered active material, which improves the rate capability by decreasing the internal resistance of the device.