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Highly Conductive Aromatic Functionalized Multi-Walled Carbon Nanotube for Inkjet Printable High Performance Supercapacitor Electrodes.

Ujjain SK, Bhatia R, Ahuja P, Attri P - PLoS ONE (2015)

Bottom Line: Carboxylic moieties (-COOH) on aromatic azide result in highly stable aqueous dispersion (max. conc. ~ 10 mg/mL H2O), making the suitable for inkjet printing.Fabricated Supercapacitors (SC) assembled using these printed substrates exhibit good electrochemical performance in organic as well as aqueous electrolytes.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.

View Article: PubMed Central - PubMed

Affiliation: Department of Physics, Indian Institute of Technology Kanpur, Kanpur, UP, India.

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.

No MeSH data available.


Scan rate dependent Cyclic Voltammograms (CVs) for f-MWCNT SCs in different electrolytes.
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pone.0131475.g006: Scan rate dependent Cyclic Voltammograms (CVs) for f-MWCNT SCs in different electrolytes.

Mentions: f-MWCNT solubilized in a variety of solvents, can be easily deposited using the printing technique; such MWCNT network based architecture has the potential for fully printable electronics. Moreover, due to the slow kinetics of carbon oxidation, the MWCNT network has a high electrochemical stability compared to amorphous carbon [29]. The electrochemical performance of the f-MWCNT SCs was first examined by cyclic voltammetry (CV) by using organic (0.1M ACN+TBAP) and different aqueous electrolytes (1M Na2SO4, H2SO4, and KOH). To evade probable interference, the potential sweep range used in experiments was chosen in order to avoid the occurrence of oxidation or reduction of aqueous medium. Fig 6a–6d show the CV result of f-MWCNT SC using organic and aqueous solutions in different potential ranges at different scan rates. All CVs maintained a quasi-rectangular shape with a perfect mirror-image feature, even at a high scan rate, suggesting good capacitive behavior and high rate capability of f-MWCNT [30,31]. Compared to other carbonaceous materials, f-MWCNT exhibits decreased inter-particle resistance and consequently higher conductivity, resulting in improved performance. Moreover, CV of f-MWCNT SCs in H2SO4 demonstrates the occurrence of a reversible couple of peaks due to the oxidation/reduction of surface functional groups represented by−C=O  +    H+  +  e−  →  −COH


Highly Conductive Aromatic Functionalized Multi-Walled Carbon Nanotube for Inkjet Printable High Performance Supercapacitor Electrodes.

Ujjain SK, Bhatia R, Ahuja P, Attri P - PLoS ONE (2015)

Scan rate dependent Cyclic Voltammograms (CVs) for f-MWCNT SCs in different electrolytes.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4496069&req=5

pone.0131475.g006: Scan rate dependent Cyclic Voltammograms (CVs) for f-MWCNT SCs in different electrolytes.
Mentions: f-MWCNT solubilized in a variety of solvents, can be easily deposited using the printing technique; such MWCNT network based architecture has the potential for fully printable electronics. Moreover, due to the slow kinetics of carbon oxidation, the MWCNT network has a high electrochemical stability compared to amorphous carbon [29]. The electrochemical performance of the f-MWCNT SCs was first examined by cyclic voltammetry (CV) by using organic (0.1M ACN+TBAP) and different aqueous electrolytes (1M Na2SO4, H2SO4, and KOH). To evade probable interference, the potential sweep range used in experiments was chosen in order to avoid the occurrence of oxidation or reduction of aqueous medium. Fig 6a–6d show the CV result of f-MWCNT SC using organic and aqueous solutions in different potential ranges at different scan rates. All CVs maintained a quasi-rectangular shape with a perfect mirror-image feature, even at a high scan rate, suggesting good capacitive behavior and high rate capability of f-MWCNT [30,31]. Compared to other carbonaceous materials, f-MWCNT exhibits decreased inter-particle resistance and consequently higher conductivity, resulting in improved performance. Moreover, CV of f-MWCNT SCs in H2SO4 demonstrates the occurrence of a reversible couple of peaks due to the oxidation/reduction of surface functional groups represented by−C=O  +    H+  +  e−  →  −COH

Bottom Line: Carboxylic moieties (-COOH) on aromatic azide result in highly stable aqueous dispersion (max. conc. ~ 10 mg/mL H2O), making the suitable for inkjet printing.Fabricated Supercapacitors (SC) assembled using these printed substrates exhibit good electrochemical performance in organic as well as aqueous electrolytes.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.

View Article: PubMed Central - PubMed

Affiliation: Department of Physics, Indian Institute of Technology Kanpur, Kanpur, UP, India.

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.

No MeSH data available.