High charge/discharge rate polypyrrole films prepared by pulse current polymerization

Wang, Jingping; Xu, Youlong; Wang, Jie; Du, Xianfeng; Xiao, Fang; Li, Jiebin

doi:10.1016/j.synthmet.2010.06.020

Cited by 72 publications

(55 citation statements)

References 37 publications

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“…4b). This might be explained by the entering into/ejecting and diffusion of counter ions being too slow compared to the transfer of electrons in the PPy matrix at high scan rates [38].…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

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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“…4b). This might be explained by the entering into/ejecting and diffusion of counter ions being too slow compared to the transfer of electrons in the PPy matrix at high scan rates [38].…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

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

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“…The polymerization potential of PPy in PCD method is obviously lower than that in GCD method and the potential in pulse-off time is much lower than the latter which is sustained high, as shown in Fig. 1b, which favors reducing the formation of C = O, -CH 2 , and -CH 3 in PPy matrix then improving the conductivity of PPy [30]. Tantalum sheets, with exposure area of 1 cm × 1 cm, were chosen as the substrate electrodes because they are stable in polymerization and much cheaper than platinum electrodes.…”

Section: Methodsmentioning

confidence: 97%

“…Thanks to the fine nanostructures as well as the high diffusion coefficient, high electronic conductivity, and excellent stability of pulse current polymerized PPy-TOS (PCP PPy-TOS) [30], the composites exhibited an ultrafast charging/ discharging ability and very stable cycling performance.…”

Section: Introductionmentioning

confidence: 99%

Capacitive characteristics of nanocomposites of conducting polypyrrole and functionalized carbon nanotubes: pulse current synthesis and tailoring

Wang

Zhu

et al. 2016

J Solid State Electrochem

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Conducting polypyrrole (PPy) is an attractive material for supercapacitors with a high specific capacitance and environmental friendliness feature, but it suffers from the limited power density and short cycling life due to the low ionic mobility and mechanic stress resulting from ions in/out solid phase, respectively. Here, we present PPy-ptoluenesulfonate (TOS) and functionalized single-walled carbon nanotube (FSWNT) nanorod-like composites deposited by pulse current method in TOS and FSWNT dispersive solutions, with a diameter of less than 20 nm due to the improved FSWNT concentration near the polymerization interface during pulse-off time. The reduced ion diffusion length and the high diffusion coefficient of PPy-TOS synthesized by pulse current method lead to the nanocomposites with a high specific capacitance of 360 F g −1 at a current loading of 20 A g −1 and an ultrafast charging/discharging capability with a value of 280 F g −1 at even 0.1 s. Moreover, the fine nanostructure, which can accommodate the mechanical stress during charging/discharging process, significantly prolongs the cycling life of the nanocomposites, with its capacitance well maintained of 80 % after 100,000 continuous cycles at a current load of 400 A g −1 . All of these enable the nanocomposites to be excellent active materials for high-performance supercapacitors.

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“…It is worth mentioning here that the sharp peaks are absent in untreated PPy:PSS films (see Figure S1 in the Supporting Information); rather there was a hump at 2u 5 23.89 8 that is specifically due to conducting amorphous polypyrrole. 45 The peak corresponds to d 5 3.71 Å , which is thought to arise from PPy chains. In the same region, for 0.5 M and 1 M CuBr 2 treated PPy:PSS films, there was a broad reflection that indicated the presence of PPy after a few PSS were removed due to the CuBr 2 salt treatment.…”

Section: Structural and Morphological Analysismentioning

confidence: 99%

“…For the Figure S1 in the Supporting Information), the broad peak at 2u 5 26 8 corresponds to the face-to-face p-p stacking interaction of PPy chains, which is close to the interplanar van der Waals distance for aromatic groups. 45 The coulumbic attraction between the PPy and PSS is affected by the salt treatment, and the p-p interchain stacking distance is disturbed because they are spread on the entire surface of the film. Thus, for PPy:PSS multilayer (one, three, five) films treated with 0.5 M and 1 M CuBr 2 , these peaks are suppressed because of the removal of a few excess PSS.…”

Section: Structural and Morphological Analysismentioning

confidence: 99%

Effect of CuBr₂salt treatment on the performance of nanocolloidal PPy:PSS multilayer thin film counter electrodes of dye‐sensitized solar cells

Maruthamuthu

Chandrasekaran

Manoharan

et al. 2016

J of Applied Polymer Sci

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A thin Pt layer on fluorine-doped tin oxide (FTO) glass is commonly used as the counter electrode (CE) for dyesensitized solar cells (DSCs). We have investigated thin layers on FTO glass made from spherical polypyrrole (PPy)-poly(styrene sulfonate) (PSS) nanocolloidal particles with and without treatment of CuBr 2 and used them as CEs. The colloidal polymer composite (PPy:PSS) was spin-coated at 4000 rpm, and PPy:PSS multilayer (one, three, five) films were employed as the CEs. Aqueous solutions of CuBr 2 (0.5 M and 1 M) were coated onto the multilayer CEs, which increased the efficiency of DSCs. When compared with the untreated PPy:PSS counter electrodes, the CuBr 2 -treated PPy:PSS films showed lower charge-transfer resistance, higher surface roughness, and improved catalytic performance for the reduction of I 2 3 . The enhanced catalytic performance is attributed to the interaction of the superior electrocatalytic activity of PPy:PSS and CuBr 2 salt. Under standard AM 1.5 sunlight illumination, the counter electrodes based on a single-layer PPy:PSS composite with 0.5 M and 1 M CuBr 2 salt treatment demonstrated power conversion efficiencies (PCE) of 5.8% and 5.6%, respectively. These values are significantly higher than that of the untreated PPy:PSS CE and are comparable with that of a Pt CE.

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High charge/discharge rate polypyrrole films prepared by pulse current polymerization

Cited by 72 publications

References 37 publications

Polypyrrole coated nylon lycra fabric as stretchable electrode for supercapacitor applications

Polypyrrole coated nylon lycra fabric as stretchable electrode for supercapacitor applications

Capacitive characteristics of nanocomposites of conducting polypyrrole and functionalized carbon nanotubes: pulse current synthesis and tailoring

Effect of CuBr₂salt treatment on the performance of nanocolloidal PPy:PSS multilayer thin film counter electrodes of dye‐sensitized solar cells

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High charge/discharge rate polypyrrole films prepared by pulse current polymerization

Cited by 72 publications

References 37 publications

Polypyrrole coated nylon lycra fabric as stretchable electrode for supercapacitor applications

Polypyrrole coated nylon lycra fabric as stretchable electrode for supercapacitor applications

Capacitive characteristics of nanocomposites of conducting polypyrrole and functionalized carbon nanotubes: pulse current synthesis and tailoring

Effect of CuBr2salt treatment on the performance of nanocolloidal PPy:PSS multilayer thin film counter electrodes of dye‐sensitized solar cells

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Effect of CuBr₂salt treatment on the performance of nanocolloidal PPy:PSS multilayer thin film counter electrodes of dye‐sensitized solar cells