| 초록 |
To enhance the energy storing capacity of the hybrid supercapacitor (HSC), it is necessary to find the appropriate positive and negative electrode materials. In present work, we have developed the redox-active HSC by using the 2D reduced graphene oxide (rGO)/polyoxometalate (POM) and MXene (Ti3C2Tx) as a positive and negative electrode, respectively. The prepared rGO/POMs and Ti3C2Tx demonstrate the enhanced energy storing capacity in positive and negative potential range with 631 and 407 F/g, respectively. The assembled redox-active rGO/POM//Mxene HSC cell shows the higher working voltage of 1.4 V with highest specific energy of 50.46 Wh/Kg. In addition, the cell demonstrate the excellent cycling stability over 5000 cycles with capacitance retention of 95%. This work provides a new way of thinking to develop high-performance energy storage devices with excellent energy, power density, and ultra-long-cycle life. |
