Fast and Simple Preparation of Supercapacitor with CoMoO4 as Electrode and Study of Its Photocatalytic Performance

In this paper, CoMoO4 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 CoMoO4 nanosheet, which has a porous structure with a diameter of about 400 nm and a thickness of about 100 nm. Through the electrochemical performance test, the synthesized product has good electrochemical performance. Under the condition of 1 A/g, the specific capacitance of CoMoO4 PNSs is 1800 F/g, and after 10000 cycles of charging and discharging, the capacity maintenance rate is 99.6%. CoMoO4 PNSs is a positive electrode, and activated carbon (AC) is a negative electrode. The device is assembled, and its theoretical voltage window reaches 1.6 V. After 8000 cycles of charging and discharging, the specific capacitance decreased from 121 F/g to 113 F/g, retaining 93.38% 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 94.2%, 98.1%, and 96.4%, respectively. We further explored the cyclic stability of the material for RhB dye degradation. After 5 cycles of testing, it was found that the stability is very good, and can maintain 98.6%. The excellent electrochemical and photocatalytic properties of CoMoO4 PNSs are mainly attributed to the special porous sheet structure and CoMoO4 material. This work provides a new strategy and method for preparing excellent electrode materials and photocatalyst materials.