Synthesis of Ni-riched NiO-Co3O4 sheet-like nanocomposites and their application in supercapacitors

In this reported work Ni-riched NiO-Co₃O₄ sheet-like nanocomposites (SNCs) were obtained through a facile solvothermal method in a mixed solvent and subsequently calcinated in air. Galvanostatic charge-discharge measurement revealed that the Ni-riched NiO-Co₃O₄ SNCs electrode has an impressive specific capacitance as high as 836 F g^-1 at 4 A g^-1 in 3 M KOH solution. The as-obtained Ni-riched NiO-Co₃O₄ SNCs product showed a weak cycling stability, but the higher capacitance (424 F g^-1) was retained after 1000 cycles at 4 A g^-1.