Efficient Metal-Oriented Electrodeposition of Co-Based Metal-Organic Framework with Superior Capacitive Performance

An efficient cathodic electrodeposition method is developed for coating Co-based metal-organic frameworks (Co-MOF) on carbon fiber cloth (CFC), a widely used substrate in energy fields. The use of a highly active Co metal surface enables nucleation and growth of Co-MOF in 3D rodlike crystal bundles. When used as a binder-free electrode (Co-MOF/CFC) for supercapacitors, it shows a high areal capacitance of 1784 mF cm −2 at 1 mA cm −2 , good cycle stability and excellent rate capability. The assembled asymmetric all-solid-state supercapacitor device (Co-MOF/CFC//AC) delivers a high energy density and power density. This work may open up a feasible and effective approach to realise the electrosynthesis of MOF films promoting use in energy storage and conversion fields