Investigations of 2D Ti3C2(MXene)‐CoCr2O4 nanocomposite as an efficient electrode material for electrochemical supercapacitors. (10th January 2022)

• Record Type: Journal Article
• Authors: Shafique, Rubia; Rani, Malika; Mahmood, Arshad; Alshgari, Razan A.; Batool, Kiran; Yaqoob, Tahira; Janjua, Naveed Kausar; Khan, Safia; Khan, Shamim; Murtaza, Ghulam
• Is Part Of: International journal of energy research. Volume 46:Number 5(2022)
• Page Start: 6689
• Page End: 6701
• Publication Date: 2022-01-10
• Subjects: cyclic voltammetry -- electrochemical impedance spectroscopy -- energy storage -- GCD analysis -- nanocomposites; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Power resources -- Research -- Periodicals; 621.042
• DOI: 10.1002/er.7605
• Languages: English
• ISSNs: 0363-907X

Abstract

Summary: Unique and significant properties of layered two‐dimensional titanium carbide MXene (Ti3 C2 ) triggered world for designing and fabricating nanoelectrode materials with maximum energy storage capacity employed in various electrochemical device applications such as supercapacitors (SCs). In the present study, novel MXene/CoCr2 O4 synthesis to fabricate nanoelectrode material via chemical co‐precipitation method with maximum stability and conductivity has been reported. Synthesized material shows reduction in c‐lattice parameter for MXene/CoCr2 O4 nanocomposite to 21.7 A° indicated by X‐ray powder diffraction. Surface morphology reveals reduction in grain size up to 1.16 nm whereas elemental composition confirms presence of oxygen, titanium, chromium, and cobalt within nanocomposite. From Pl spectra, it is quite clear that peak intensity has been reduced whereas Raman spectra reveals both MXene and cobalt peaks presence within nanocomposite. Optimized nanocomposite reveals improved specific capacitance of 417 Fg −1 in IM KOH aqueous electrolyte. GCD analysis reveals power density increases from 603.2 to 1367.6 W/kg whereas energy density value decreases from 20.89 to 9.22 Wh/kg. Superior electrochemical performance of as‐prepared nanocomposite nano‐electrode material attributed to surface redox reaction supporting pseudocapacitance more strongly in basic electrolyte than acidic electrolyte. Thus, MXene/CoCr2 O4 nanocomposite could serve as an excellent energy storage material especially in supercapacitors. Abstract : The maximum capacitance of 417.9 Fg−1 has been attained in 1 M KOH whereas galvanostatic charge–discharge cycling confirms pseudocapacitive behavior. Therefore, synthesized MXene/CoCr2O4 nanocomposite can reboot supercapacitor energy storage capabilities being an electrode material.