NSA doped PPy @ Ti3C2Tx hybrid material as a high-performance supercapacitor electrode

• Published in: Journal of materials research Vol. 37; no. 22; pp. 3965 - 3975
• Main Authors: Ronnasi, Bahar, Mahmoodian, Mehrnoosh, Mohammadi, Somayeh, Yasoubi, Mohammadreza, Sanaee, Zeinab
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 28.11.2022; Springer Nature B.V
• Subjects: Anthraquinones; Applied and Technical Physics; Biomaterials; Capacitance; Chemical synthesis; Chemistry and Materials Science; Electrochemical analysis; Electrodes; Electrons; Inorganic Chemistry; Materials Engineering; Materials research; Materials Science; Nanotechnology; Naphthalene; Polypyrroles; Sodium salts; Sulfonic acid; Supercapacitors; C; T; Ti; MXene; PPy; Supercapacitor; α-NSA
• ISSN: 0884-2914; 2044-5326
• DOI: 10.1557/s43578-022-00527-z

Herein, a hybrid material composed of doped Polypyrrole (PPy) on two-dimensional Ti 3 C 2 T x MXene surface is presented as a high-performance electrochemical supercapacitor electrode. PPy is deposited on the synthesized Ti 3 C 2 T x surfaces employing in-situ chemical polymerization to fabricate PPy @Ti 3 C 2 T x electrodes. The improvement of electrochemical performance of PPy@Ti 3 C 2 T x is investigated by introducing two anionic dopants: α-naphthalene sulfonic acid (α-NSA) and a mixture of anthraquinone-2-sulfonic acid sodium salt monohydrate/5-sulfosalicylic acid dihydrate (AQSANa,SSCA). While the maximum specific capacitances of the Ti 3 C 2 T x , PPy@Ti 3 C 2 T x and AQSANa,SSCA doped PPy@Ti 3 C 2 T x are 232.2, 154.4, 105.9 F g −1 at the scan rate of 5 mV s −1 , respectively; they retain less than 70% of their initial capacitance over 2000 cycles. α-NSA doped PPy@Ti 3 C 2 T x exhibits the best electrochemical performance with the highest specific capacitance (347.6 F g −1 ) and significantly more capacitance retention (90% over more than 4000 cycles). This notable improvement proposes α-NSA doped PPy @Ti 3 C 2 T x MXene nano structured material as a high-performance supercapacitor electrode. Graphical abstract