Morphology-controlled PANI nanowire electrode by using deposition scan rate in H2SO4/PVA polymer electrolyte for electrochemical capacitor

Sim, Cheng-Kim; Majid, S.R.

doi:10.1007/s11581-016-1938-0

Cited by 5 publications

(6 citation statements)

References 29 publications

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“…However, for conducting polymers and metal oxides/nitrides/sulfides, their capacitance is derived from fast and reversible redox reactions or faradic charge transfer reactions that occur at the surface of the electroactive species, which is defined as a pseudocapacitor. Generally, pseudocapacitors based on redox reactions exhibit higher specific capacitances and energy densities than electric double‐layer capacitors 5,6 …”

Section: Introductionmentioning

confidence: 99%

“…Among the electrode materials used in pseudocapacitors, conducting polymers are good candidates that have intrinsic advantages of high electrical conductivity, environmental stability and good processability 5,6 . Compared with polypyrrole and poly(3,4‐ethylenedioxythiophene), polyaniline (PANI) exhibits a large pseudocapacitance owing to its multiple redox states through doping and dedoping processes.…”

Section: Introductionmentioning

confidence: 99%

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Flexible and stretchable polyaniline supercapacitor with a high rate capability

Huang

Feng

et al. 2020

Polymer International

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Flexible electronics are currently highly favored because of their promising applications in flexible displays, artificial electronic skin, wearable devices etc. Exploiting flexible energy storage systems, which are supercapacitors, that have a decent electrochemical performance as well as flexibility and stretchability is essential to promote the development of flexible electronic products. In this work, a flexible and stretchable polyaniline (PANI) supercapacitor based on a conductive stainless steel mesh was developed via a simple electrodeposition route with an elastic gel polyvinyl alcohol polymer (PVA)/phosphoric acid (H3PO4) electrolyte, which exhibits a considerable rate capability and mechanical properties. The as‐prepared capacitor delivers a specific capacitance of 282 F g−1 under a specific current of 2.5 A g−1. Meanwhile, the PANI capacitor exhibits perfect pseudocapacitance behavior at low scan rates (up to 50 mV s−1) and great capacitive characteristics at high scan rates up to 5000 mV s−1. More impressively, this supercapacitor displays excellent tolerance against mechanical deformation, including bending, folding and stretching, even to 20%, with a well‐maintained capacitance. This stretchable PANI supercapacitor with a high rate capability provides a facile and cost‐effective route for the design of flexible energy storage devices. © 2020 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flexible and stretchable polyaniline supercapacitor with a high rate capability

Huang

Feng

et al. 2020

Polymer International

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“…These colloidal particles can act as basic units for the morphology recombination. [27,40] Under the action of a direct current electric field, the positively charged colloidal particles became electrically neutral after they reached the surface of ITO electrode that had a negative bias. At the same time, the basic units of PANI-CSA were reassembled into the original specific structure through the amine groups of adjacent rings which were poised for 1,4-ring coupling along the π-π stacked benzene rings.…”

Section: Mechanism Analysis Of Pani-csa Electrophoretic Depositionmentioning

confidence: 99%

“…[19][20][21][22] However, the use of nonconductive binders in the electrode fabrication, such as polyvinylidene fluoride, [23,24] polytetrafluoroethylene, [25] and ethyl cellulose, [26] result in high interfacial resistance and slow ion transport decreasing the electrochemical performance. [27][28][29][30] Electrophoretic deposition (EPD) is a widely used method that can transfer colloidal particles onto conductive substrates forming electrodes under a direct current electric field without involving the use of nonconductive binders. It has advantages of fast process time, a wide range of substrate options, easy operation, controllable film thickness, and uniformity.…”

Section: Introductionmentioning

confidence: 99%

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Transferring and Retaining of Different Polyaniline Nanofeatures via Electrophoretic Deposition for Enhanced Sensing Performance

Zhai

Wang

et al. 2023

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Nanofeatured polyaniline (PANI) electrodes have demonstrated impressive sensing performance due to the enhanced electrolyte diffusion and ion transport. However, the retaining of these nanostructures on substrates via electrophoretic deposition (EPD) faces an insurmountable challenge from the involved dedoping process. Here, camphorsulfonic acid is utilized with high steric effects to dope PANI (PANI-CSA) that can be directly used EPD without involving a dedoping process. Five different nanofeatures (sea cucumber-like, nanofiber, amorphous, nanotube, and nanorod) are synthesized, and they have been all successfully transferred onto indium tin oxide substrate in a formic acid/acetonitrile system, namely a morphology memory effect. The mechanism of retaining these nanofeatures is revealed, which is realized via the processes of dissolution of PANI-CSA, codoping and solvation, and reassembly of basic units into the original nanofeature. The enhanced protonation level by the codoping of formic acid and solvation of acetonitrile plays the key role in retaining these nanofeatures. This method is also applicable to transfer PANI/gold nanorod composites (PANI-CSA/AuNRs). The PANI-CSA/ AuNRs electrode as an ascorbic acid sensor has shown an excellent sensing performance with a sensitivity up to 872.7 µA mm −1 cm −2 and a detection limit of as low as 0.18 × 10 −6 m.

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Preparation and anticorrosion performance of nano polyaniline/polyurethane interpenetrating network composite coating

Xu,

Yu,

Fang

et al. 2023

Polymer International

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PANI‐DBSA particles were synthesized through in‐situ lotion polymerization of aniline (AN) and dodecylbenzene sulfonic acid (DBSA) as raw materials, which followed by combining with epoxy resin (E‐44) and castor oil (CO) to prepare a polyaniline mixture (PANI‐DBSA/CO), which was used as nano filler to create nano polyaniline/polyurethane interpenetrating polymer network(IPN) coating. SEM, XRD, and FTIR were used to characterize the PANI‐DBSA and PANI‐PU interpenetrating network composite coatings that were produced. The coating's physical and mechanical characteristics were investigated, as well as the system's corrosion behavior in 3.5wt% NaCl solution, utilizing electrochemical impedance spectroscopy (EIS) and electrokinetic polarization. Acid, alkali, and salt water immersion investigations were used to further evaluate the coating's medium resistance. The results show that when PANI‐DBSA is added at 1wt%, the contact angle reaches 102.6°, the adhesion reaches S1 grade after 720h immersion, the tensile strength is 16.22MPa and the elongation reaches 208%. The impedance value of the composite coating grew by 569 times with the addition of 1wt% polyaniline, and the resistance duration of 10wt% H2SO4, 10wt% NaOH, and 3.5wt% NaCl reached more than 90 days. The addition of polyaniline to IPN coatings can increase corrosion resistance and extend their application range.This article is protected by copyright. All rights reserved.

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Morphology-controlled PANI nanowire electrode by using deposition scan rate in H2SO4/PVA polymer electrolyte for electrochemical capacitor

Cited by 5 publications

References 29 publications

Flexible and stretchable polyaniline supercapacitor with a high rate capability

Flexible and stretchable polyaniline supercapacitor with a high rate capability

Transferring and Retaining of Different Polyaniline Nanofeatures via Electrophoretic Deposition for Enhanced Sensing Performance

Preparation and anticorrosion performance of nano polyaniline/polyurethane interpenetrating network composite coating

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