Facile hydrothermal synthesis of BiFeO3 nanoplates for enhanced supercapacitor properties

Perovskite BiFeO 3 nanoplates were prepared via a facile hydrothermal method with NaOH as mineralizer. The obtained BiFeO 3 nanoplates are about 30[Formula: see text]nm [Formula: see text] 90[Formula: see text]nm [Formula: see text]90[Formula: see text]nm in an average shape. This hydrothermal novel nanostructure with lots of defects largely enhances the specific capacitance compared with the electrochemically deposited BiFeO 3 nanoparticles. The electrode of BiFeO 3 nanoplates exhibits the highest specific capacitance of 254.6[Formula: see text]F g[Formula: see text] at a scan rate of 1[Formula: see text]mV s[Formula: see text] as well as good cyclic stability with 84% special capacitance retention after 1000 cycles. The prominent capacitive properties of hydrothermally obtained BiFeO 3 suggest its promising application for supercapacitors.