title: Highly Conductive Aromatic Functionalized Multi-Walled Carbon Nanotube for Inkjet Printable High Performance Supercapacitor Electrodes.
abstract: We report the functionalization of multiwalled carbon nanotubes (MWCNT) via the 1,3-dipolar [3+2] cycloaddition of aromatic azides, which resulted in a detangled CNT as shown by transmission electron microscopy (TEM). Carboxylic moieties (-COOH) on aromatic azide result in highly stable aqueous dispersion (max. conc. ~ 10 mg/mL H2O), making the suitable for inkjet printing. Printed patterns on polyethylene terephthalate (PET) flexible substrate exhibit low sheet resistivity ~65 Ω. cm, which is attributed to enhanced conductivity. Fabricated Supercapacitors (SC) assembled using these printed substrates exhibit good electrochemical performance in organic as well as aqueous electrolytes. High energy and power density (57.8 Wh/kg and 0.85 kW/kg) in 1M H2SO4 aqueous electrolyte demonstrate the excellent performance of the proposed supercapacitor. Capacitive retention varies from ~85-94% with columbic efficiency ~95% after 1000 charge/discharge cycles in different electrolytes, demonstrating the excellent potential of the device for futuristic power applications.
authors.affiliation: Department of Physics, Indian Institute of Technology Kanpur, Kanpur, UP, India.
authors.forename: Sanjeev K
authors.initials: SK
authors.lastname: Ujjain
authors.affiliation: Department Of Chemistry, Institute Of Home Economics, Delhi, India; Peoples Action For Livelihood & Sustainability (Pals), Delhi, India.
authors.forename: Rohit
authors.initials: R
authors.lastname: Bhatia
authors.affiliation: Department of Chemistry, University of Delhi, Delhi, India.
authors.forename: Preety
authors.initials: P
authors.lastname: Ahuja
authors.affiliation: Plasma Bioscience Research Center / Department of Electrical and Biological Physics, Kwangwoon University, Seoul, Korea.
authors.forename: Pankaj
authors.initials: P
authors.lastname: Attri
mesh_terms: D025802:Electric Capacitance; D004553:Electric Conductivity; D055664:Electrochemical Techniques; D004566:Electrodes; D004573:Electrolytes / Q000737:chemistry; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D011327:Printing / Q000295:instrumentation*; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D013816:Thermodynamics; D013818:Thermogravimetry
chemical_list: D004573:Electrolytes; D037742:Nanotubes, Carbon