Capacitance performance of Ti3C2Tx MXene nanosheets on alkaline and neutral electrolytes
Ramesh Aravind Murugesan, Krishna Chandar Nagamuthu Raja
Abstract
The high electrical conductivity, good hydrophilicity, and various surface terminal configurations of MXenes have exposed extensive attention in the field of energy storage. Ti 3 C 2 T x MXene was synthesised via a facile chemical process. A study of Ti 3 C 2 T x MXene's structure, composition, and morphology was carried out using X-ray diffraction (XRD), Raman spectroscopy (RS), X-ray photoelectron spectroscopy (XPS), and Field emission scanning electron microscopy (FESEM). A detailed study of the influence of aqueous electrolytes on the charge storage performance of Ti 3 C 2 T x MXene was conducted by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), cyclic stability (CS), and electrochemical impedance spectroscopy (EIS). In addition, it is proposed that Ti 3 C 2 T x MXene's surface terminations affect its capacitance behaviour in aqueous electrolytes. Ti 3 C 2 T x MXene in 3 M (KOH) alkaline electrolyte has good electrochemical performance, with a specific capacitance (Cs) of up to 92 F/g at 2A/g, making it a potential material for supercapacitors.