Electrochemical deposition of polypyrrole for symmetric supercapacitors

Muthulakshmi, B.; Kalpana, D.; Pitchumani, S.; Renganathan, N.G.

doi:10.1016/j.jpowsour.2005.10.013

Cited by 144 publications

(81 citation statements)

References 11 publications

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“…4b). The capacitance obtained at 50 mV s -1 with 60% strain applied might be comparable to or lower than that of 235.35 F g -1 reported for PPy coated activated carbon at a scan rate of 20 mV s -1 [40]. In their work a conductive stainless steel current collector was used and PPy was electrochemically synthesized.…”

Section: Electrochemical Propertiesmentioning

confidence: 50%

Polypyrrole coated nylon lycra fabric as stretchable electrode for supercapacitor applications

Yue

Wang

Ding

et al. 2012

Electrochimica Acta

198

166

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, GG (2012), Polypyrrole coated nylon lycra fabric as stretchable electrode for supercapacitor applications, Electrochimica Acta, 68, Polypyrrole coated nylon lycra fabric as stretchable electrode for supercapacitor applications AbstractWearable electronics offer the combined advantages of both electronics and fabrics. Being an indispensable part of these electronics, lightweight, stretchable and wearable power sources are strongly demanded. Here we describe a daily-used nylon lycra fabric coated with polypyrrole as electrode for stretchable supercapacitors. Polypyrrole was synthesized on the fabric via a simple chemical polymerization process with ammonium persulfate (APS) as an oxidant and naphthalene-2,6-disulfonic acid disodium salt (Na 2 NDS) as a dopant. This material was characterized with FESEM, FTIR, tensile stress, and studied as a supercapacitor electrode in 1.0 M NaCl. This conductive textile could endure 1000 stretching cycles with 100% strain applied, and still retained its electrical conductivity and electrochemical properties. Interestingly, we also found that this material showed improved electrochemical properties when it was being stretched. ABSTRACTWearable electronics offer the combined advantages of both electronics and fabrics.

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Section: Electrochemical Propertiesmentioning

confidence: 50%

Polypyrrole coated nylon lycra fabric as stretchable electrode for supercapacitor applications

Yue

Wang

Ding

et al. 2012

Electrochimica Acta

198

166

View full text Add to dashboard Cite

show abstract

“…The CV exhibits the typical capacitive features and the observed patterns are in conformity with that reported. [46][47][48][49] The capacitance values for the symmetric capacitor (Table I) have been calculated 46 from the CVs using the equation: C ¼ i/s, where s is the potential sweep rate and i is the average current. SC of 130 F g À1 was obtained for the single electrode at the sweep rate of 10 mV s…”

Section: Supercapacitor Studiesmentioning

confidence: 99%

LiClO₄‐doped plasticized chitosan as biodegradable polymer gel electrolyte for supercapacitors

Selvakumar

Bhat

2009

J of Applied Polymer Sci

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Studies on redox supercapacitors using electronically conducting polymers are of great importance for hybrid power sources and pulse power applications. In this study, electrochemical properties of a chitosan-based biodegradable polymer gel electrolyte (PGE) and a p/p polypyrrole supercapacitor fabricated using this electrolyte have been investigated. The variation of conductivity and dielectric properties of the electrolyte film with temperature has also been measured. The PGE film chosen for the study exhibited a specific conductivity of 5.5 Â 10 À3 S cm À1 . The electric modulus of the electrolyte film exhibits a long tail feature indicative of good capacitance. The fabricated supercapacitor showed a fairly good specific capacitance of 120 F g À1 and a time constant of 1 s.

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“…Nevertheless, COP present some disadvantages due to their low specific capacity and a short life time related to the faradic reactions [10]. This low capacity can be considerably improved by building composite electrodes made of conducting polymer/carbonaceous substrate as graphite [11,12], or by coupling conducting polymer with carbon nanotubes [4,8,13,14].…”

Section: Introductionmentioning

confidence: 99%

Usefulness of a composite electrode with a carbon surface modified by electrosynthesized polypyrrole for supercapacitor applications

et al. 2010

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Thin polypyrrole (PPy) films (thickness = 5-10 nm) were electrochemically deposited in situ on a carbon paste (97% of graphite plus 3% of Teflon) by means of cyclic voltammetry (CV), from an acetonitrile solution of pyrrole (0.2 M) and NaClO 4 (0.1 M). The obtained PPy/ graphite composite electrode was investigated by CV and chronopotentiometry in 0.3 M NaClO 4 aqueous electrolytic solution. The capacitance of a composite electrode, calculated by CV, was about 10 F g -1 . The capacitance value of the composite electrode was approximately nine times larger than that of pure graphite. The massic charge and discharge capacity (Q) values, calculated by chronopotentiometry, were considerably higher for the composite electrode-by more than 60 times-than for the pure graphite electrode. Electrochemical impedance spectroscopy (EIS) measurements, performed under stationary conditions, led to an interfacial capacitance value intermediate between that of pure graphite and that of the composite electrode.

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Electrochemical deposition of polypyrrole for symmetric supercapacitors

Cited by 144 publications

References 11 publications

Polypyrrole coated nylon lycra fabric as stretchable electrode for supercapacitor applications

Polypyrrole coated nylon lycra fabric as stretchable electrode for supercapacitor applications

LiClO₄‐doped plasticized chitosan as biodegradable polymer gel electrolyte for supercapacitors

Usefulness of a composite electrode with a carbon surface modified by electrosynthesized polypyrrole for supercapacitor applications

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Electrochemical deposition of polypyrrole for symmetric supercapacitors

Cited by 144 publications

References 11 publications

Polypyrrole coated nylon lycra fabric as stretchable electrode for supercapacitor applications

Polypyrrole coated nylon lycra fabric as stretchable electrode for supercapacitor applications

LiClO4‐doped plasticized chitosan as biodegradable polymer gel electrolyte for supercapacitors

Usefulness of a composite electrode with a carbon surface modified by electrosynthesized polypyrrole for supercapacitor applications

Contact Info

Product

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About

LiClO₄‐doped plasticized chitosan as biodegradable polymer gel electrolyte for supercapacitors