Facile one-step mechanochemical synthesis of [Cu(tu)]Cl•1/2H2O nanobelts for high-performance supercapacitor

A facile one-step mechanochemical process from CuCl2 center dot 2H(2)O and thiourea (tu) to fabricate novel [Cu(tu)] Cl center dot 1/2H(2)O nanobelts has been observed for the first time, and the nanobelts were used as an electrode material for a supercapacitor. The [Cu(tu)] Cl center dot 1/2H(2)O nanobelts with staggered arrangement have lengths longer than 10 mm, and exactly straight nanobelts are 300 nm in width, and the extreme ends of nanobelts are around 30-50 nm in width. The specific capacitance of the [Cu(tu)] Cl center dot 1/2H(2)O nanobelts was up to 1145 F g(-1) at scan rate of 5 mV s(-)1 and 922 F g(-1) at current density of 10 A g(-1) in a 2 M KOH electrolyte. Simultaneously, the retention was maintained at 72.4% after 500 cycles at 10 A g(-1). The corresponding equivalent circuit for the [Cu(tu)] Cl center dot 1/2H(2)O was also discussed. This study provides a facile, green, and large-scale method to fabricate novel nano-complexes with high supercapacitor activity.