Nanoclay Co–Doped CNT/Polyaniline Nanocomposite: A High‐Performance Electrode Material for Supercapacitor Applications. Issue 28 (2nd October 2017)

• Record Type: Journal Article
• Authors: Oraon, Ramesh; De Adhikari, Amrita; Tiwari, Santosh K.; Nayak, Ganesh C.
• Is Part Of: ChemistrySelect. Volume 2:Issue 28(2017)
• Page Start: 8807
• Page End: 8817
• Publication Date: 2017-10-02
• Subjects: Carbon Nanotubes (CNT) -- Nanoclay. Polyaniline (PANI) -- Specific Capacitance (C) -- Supercapacitor (SCs); Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201700276
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: This work presents the substantial co‐doping effect of H + and nanoclay on the electrochemical performance of organic‐inorganic based spontaneous self‐assembled structure for supercapacitor (SCs) application via facile in‐situ and ex‐situ approach. Endowed with well‐established catalytic properties, nanoclay not only serves as a smart spacer towards stabilization of bulk morphology but also improves the electronic conductivity of electrode through interfacial compatiblization after polymerization with polyaniline (PANI). Electrochemical measurements revealed the superior performance of H + and nanoclay co‐doped ternary nanocomposite (both in‐situ & ex‐situ) as compared to other related systems. Capacitive performance of electrode measured by galvanostatic charging discharging (GCD) analysis at 1 A/g showed maximum specific capacitance of 605 F/g for ternary in‐situ product CHNA (i.e. acid co‐doped carbon nanotube/nanoclay/PANI) with an energy density of 53.77 Wh/Kg and power density of 399 W/Kg. EIS analysis suggests improved electronic conductivity of in‐situ product owing to their high surface area and unique 3D architecture of electrode with suitable mesopores. Furthermore, charging‐discharging test for consecutive 2000 cycles ensured its good cyclic stability with 92% initial specific capacitance retention at 1 A/g. Thus, H +, nanoclay co‐doped CNT/PANI based low cost, high capacitive and environmental friendly electrode materials are expected to be a potential candidate for SCs application. Abstract : Electrochemical analysis revealed superior capacitance performance of ternary in‐situ CHNA in chronological order acid co‐doped carbon nanotube (CNT)/nanoclay/polyaniline (PANI) which exhibited maximum specific capacitance of 605 F/g at energy density (53.77 Wh/Kg) and power density (399 W/Kg) at current density 1 A/g.