A composite electrode of 2D-[Ti.sub.3][C.sub.2]

• Published in: Polymer engineering and science Vol. 62; no. 6; pp. 1918 - 1926
• Main Authors: Sarma, Yallapragada Sai Swaroop, Gupta, Nisha, Bhattacharya, Pallab
• Format: Journal Article
• Language: English
• Published: Society of Plastics Engineers, Inc 01-06-2022
• Subjects: Analysis; Design and construction; Electrical conductivity; Electrodes; Materials; Ultracapacitors; India
• ISSN: 0032-3888; 1548-2634
• DOI: 10.1002/pen.25975

Here, we propose a composite system made of 2D-[Ti.sub.3][C.sub.2] and two different chemical forms of polyaniline (PANI) like polyemeraldine base (EB) and polyemeraldine salt (ES) to investigate their electrochemical performances as supercapacitor electrode material. Fundamentally, EB and ES are having different functionalities and electrical conductivities to affect their electrochemical performances. Thus, synthesis and electrochemical performances of the composites made of [Ti.sub.3][C.sub.2] and ES or EB with different compositions is discussed where [Ti.sub.3][C.sub.2]/ES form of PANI appears as best performing supercapacitor electrode with the areal capacitance of 1.85 [Fcm.sup.-2] at 5 [mVs.sup.-1]. A capacitance enhancement of 5.4 times was observed for [Ti.sub.3][C.sub.2]/PANI-ES while compared to the same for bare [Ti.sub.3][C.sub.2] with capacity retention of 91.70% after 500 cycles at 1 [Ag.sup.-1]. This work has also explored the effect of composite compositions by varying the stoichiometric weight ratios of [Ti.sub.3][C.sub.2] and different forms of PANI to achieve high-performing supercapacitor electrode materials.