Ni3S2 coated ZnO array for high-performance supercapacitors

Abstract

In this communication, for the first time, we demonstrate the electrodeposition of Ni3S2 on ZnO (ZnO@Ni 3S2) array supported on nickel foam. We further demonstrate the direct use of ZnO@Ni3S2 array as a binder-free electrode material for supercapacitors and this electrode exhibits a very high specific capacitance of 1529 F g-1 at a current density of 2 A g-1, good rate capability and cycling stability. © 2013 Elsevier B.V. All rights reserved.