Metal Organic Framework high performance supercapacitors fabricated by electrophoretic deposition

2 D ultrathin nanomaterials have attracted a significant interest because of their applications as energy storage devices. Metal organic frameworks (MOFs) a subset of these 2D nanomaterials are believed to be a key solution for energy storage devices such as electrochemical capacitors. In this work, we report the fabrication of the MOF Ni₃(2,3,6,7,10,11-hexaaminotriphenylene)₂ (Ni₃(HITP)₂) supercapacitor’ electrodes using electrophoretic deposition. The morphologies of the Ni₃(HITP)₂ electrodes were characterized using scanning electron microscopy, and transmission electron microscopy. The structure of the Ni₃(HITP)₂ electrodes was analyzed using x-ray diffraction. The MOF-based supercapacitor exhibited excellent capacitive performance in 0.5M Na₂SO₄ with an areal capacitance of 15.58mF/cm². Furthermore, the supercapacitor exhibited an outstanding cycling stability with a capacitance retention of 81% over 50,000 cycles indicating excellent long term electrochemical stability. These results pave a promising route for the design and manufacture of a new generation of devices for energy storage applications.