3D network-like mesoporous NiCo2O4 nanostructures as advanced electrode material for supercapacitors

3D network-like mesoporous NiCo2O4 nanostructures have been successfully fabricated through a solvothermal route coupled with a post annealing treatment. Benefiting from its advantages of the unique 3D network-like structures with large specific surface area (170.6 m(2) g (1)), abundant mesoporosity (5-10 nm) and high electronic conductivity, the as-obtained NiCo2O4 manifests high specific capacitance of 931 F g (1) at 3 A g (1), remarkable capacity retention rate of 85.2 and 72.5% at 20 and 50 A g (1) compared with 2 A g (1) and superior cycling stability of 125.2% of initial capacity retention over 1000 cycles at 3 A g (1). The excellent electrochemical performances coupled with its facile and cost-effective way will render the 3D network-like mesoporous NiCo2O4 nanostructures as attractive electrode materials for promising application in supercapacitors. (C) 2014 Elsevier Ltd. All rights reserved.