Volume 19: Sustainable Energy Solutions for a Post-COVID Recovery towards a Better Future: Part II

The Synthesis of High-Quality V2C as Electrode Material for Supercapacitors Wangsheng Ai，Chunfei Zhang，He Miao，Liusheng Xiao，Jinliang Yuan

Abstract

The two-dimensional V2C MXene material has excellent electrical conductivity and a large specific surface area. It has great application potential in the field of energy storage and catalysis. As the electrode material of supercapacitors, V2C has the characteristics of electric double layer capacitance similar to carbon materials. In this study, a mixture of sodium fluoride and hydrochloric acid was used as the etching solution, and V2AlC was gently etched to get the high-quality V2C by a hydrothermal method. The electrochemical results show that the specific capacitance reaches 153.9 F/g in the 1 M Na2SO4 electrolyte at a scan rate of 2 mV/s. This work provides a new method for preparing high-quality V2C, promoting the application of V2C material in supercapacitors.

Keywords MXene，V2C，electrode material，supercapacitors