Fast and Simple Preparation of Supercapacitor with CoMoO۴ as Electrode and Study of Its Photocatalytic Performance

In this paper, CoMoO۴ Porous NanoSheets (PNSs) were successfully fabricated on a carbon cloth substrate by a low-temperature water bath method. Through morphological characterization and phase analysis, the synthesized product is CoMoO۴ nanosheet, which has a porous structure with a diameter of about ۴۰۰ nm and a thickness of about ۱۰۰ nm. Through the electrochemical performance test, the synthesized product has good electrochemical performance. Under the condition of ۱ A/g, the specific capacitance of CoMoO۴ PNSs is ۱۸۰۰ F/g, and after ۱۰۰۰۰ cycles of charging and discharging, the capacity maintenance rate is ۹۹.۶%. CoMoO۴ PNSs is a positive electrode, and activated carbon (AC) is a negative electrode. The device is assembled, and its theoretical voltage window reaches ۱.۶ V. After ۸۰۰۰ cycles of charging and discharging, the specific capacitance decreased from ۱۲۱ F/g to ۱۱۳ F/g, retaining ۹۳.۳۸% capacitance. In addition, we further studied the photocatalytic degradation of dyes on the synthetic materials. The degradation rates of Methyl orange (MO), Rhodamine B (RhB), and Congo Red (CR) dyes were ۹۴.۲%, ۹۸.۱%, and ۹۶.۴%, respectively. We further explored the cyclic stability of the material for RhB dye degradation. After ۵ cycles of testing, it was found that the stability is very good, and can maintain ۹۸.۶%. The excellent electrochemical and photocatalytic properties of CoMoO۴ PNSs are mainly attributed to the special porous sheet structure and CoMoO۴ material. This work provides a new strategy and method for preparing excellent electrode materials and photocatalyst materials.

کلیدواژه ها:

Supercapacitor ، Photocatalytic ، Low-temperature water bath method ، CoMoO۴