A novel double perovskite Dy2CoMnO6 as supercapacitor electrode with efficient electrochemical performance

Abstract

Novel double perovskite oxide Dy2CoMnO6 (DCMO) based electrodes were fabricated for supercapacitor application. Structural studies indicate a monoclinic structure (space group: P21/n). The evidence of structural distortion is observed due to the large extent of decentralization of oxygen electron clouds around Co and Mn atoms in YZ and XZ directions. Micron-sized particles of DCMO constitutes a flat surface of electrodes for faster electrochemical reaction. Room temperature electrochemical performance was investigated using three electrodes set up. Cyclic voltammograms (CV) and Galvanostatic charging–discharging (GCD) curves display significant specific capacitance with super cyclic stability as electrodes. The DCMO electrode shows 87 % cyclic stability over 10,000 cycles. This work produces efficient and stable double perovskite oxide DCMO as electrodes for energy storage applications.