In Situ Construction of ZIF-67-Derived Hybrid Tricobalt Tetraoxide@Carbon for Supercapacitor.

The CoO electrode is a very promising material owing to its ultrahigh capacitance. Nevertheless, the electrochemical performance of CoO-based supercapacitors is practically confined by the limited active sites and poor conductivity of CoO. Herein, we provide a facile synthetic strategy of tightly anchoring CoO nanosheets to a carbon fiber conductive cloth (CoO@C) using the zeolitic imidazolate framework-67 (ZIF-67) sacrificial template via in situ impregnation and the pyrolysis method.