Influence of heat treatment temperature of carbon fiber felt substrate on polyaniline electrosynthesis and its properties

Poli, Anne Karoline dos Santos; Hilário, Rodrigo Barbosa; Gama, Adriana Medeiros; Baldan, Maurício Ribeiro; Gonçalves, Emerson Sarmento

doi:10.1007/s10008-018-4107-8

Cited by 8 publications

(1 citation statement)

References 49 publications

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“…[6] The charging-discharging cycles in any CP triggers mechanical stress because of which their stability is curtailed, and they become susceptible to rapid degradation. [7][8][9][10][11][12][13] Polyaniline (PANI) has unprecedented pseudocapacitive properties, but its intrinsic disadvantage limits its ability to perform exceptionally well as a supercapacitor electrode. To avoid this limitation, nanostructuring of PANI is carried out by designing their dimensions to be of the order of hundreds of nanometers or lower by controlling the morphology of PANI during polymerization of aniline monomer.…”

Section: Introductionmentioning

confidence: 99%

Highly Capacitive Mesoporous Polyaniline Spheres as Scalable and High Electrochemical Performance Supercapacitor Electrode

et al. 2022

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This article demonstrates morphological based fabrication of Polyaniline mesopores (PANI MS ) via the standard polymerization approach using Triton as an additive and 0.1 M H 2 SO 4 as an electrolyte to achieve improved specific capacity (736 F g À 1 ) in contrast to reported bulk PANI as well as PANI sphere morphologies. PANI MS1 exhibit long cyclic stability and capacitive retention ∼ 83 % in 0.1 M H 2 SO 4 electrolyte after 5000 cycles. This easy and low-cost fabrication of PANI MS was conducted by varying minimal amount of Triton in 0.1 M H 2 SO 4 electrolyte solution to form mesopores. The adsorption and desorption isotherm of the mesopores suggests a specific surface area of 50.9 m 2 g À 1 with a pore diameter of 2.2 nm. The protocol followed to form these PANI MS involves the variation of surfactant Triton to achieve sphere morphology thereby enhancing the charge storage property of PANI. These spheres also possess an enhanced electrical conductivity to be around ∼ 23 S/m than their bulk counterpart. The electrochemical assays show that there is excellent electrolyte ion penetration in the H 2 SO 4 electrolyte which promotes a rapid ion transport to the PANI MS active sites. Also, a low value of R ct ∼ 2.17 Ω helps in giving a good capacitive performance of the PANI MS1 electrode. The electrochemical impedance spectroscopy (EIS) analysis shows a phase degree at 68°, response frequency at 0.38 Hz and time constant at 2.63 s. The study shows the present mesopores morphology of PANI projects to be one of the good electrode candidates for supercapacitor applications.

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Section: Introductionmentioning

confidence: 99%

Highly Capacitive Mesoporous Polyaniline Spheres as Scalable and High Electrochemical Performance Supercapacitor Electrode

et al. 2022

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N₂–H₂ plasma functionalization of carbon fiber fabric for polyaniline grafting

Ceregatti

Kunicki

Biaggio

et al. 2020

Plasma Processes & Polymers

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Carbon fiber fabric was treated with radiofrequency plasma in a N2/H2 gas mixture to create functional groups with –NHx or –N, thus promoting conditions for polyaniline (PAni) grafting. The morphology and chemical structure of PAni on the carbon fiber surface were assessed by scanning electron microscopy and Raman spectroscopy, showing strong interactions between the PAni and the carbon fiber, especially for the 5‐min plasma‐treated substrate. The electrochemical activity of electrodes consisting of carbon fiber fabric and PAni was evaluated by cyclic voltammetry and electrochemical impedance spectroscopy, which showed fast polarization response and lower charge transfer resistance for electrodes with better interactions between the PAni and the carbon fiber substrate, indicating the occurrence of grafting.

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Influence of heat treatment and electrochemical treatment on the properties of PANI electrodeposited on carbon fiber felt

Hilário

Moraes

Gonçalves

et al. 2022

Diamond and Related Materials

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Influence of heat treatment temperature of carbon fiber felt substrate on polyaniline electrosynthesis and its properties

Cited by 8 publications

References 49 publications

Highly Capacitive Mesoporous Polyaniline Spheres as Scalable and High Electrochemical Performance Supercapacitor Electrode

Highly Capacitive Mesoporous Polyaniline Spheres as Scalable and High Electrochemical Performance Supercapacitor Electrode

N₂–H₂ plasma functionalization of carbon fiber fabric for polyaniline grafting

Influence of heat treatment and electrochemical treatment on the properties of PANI electrodeposited on carbon fiber felt

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Influence of heat treatment temperature of carbon fiber felt substrate on polyaniline electrosynthesis and its properties

Cited by 8 publications

References 49 publications

Highly Capacitive Mesoporous Polyaniline Spheres as Scalable and High Electrochemical Performance Supercapacitor Electrode

Highly Capacitive Mesoporous Polyaniline Spheres as Scalable and High Electrochemical Performance Supercapacitor Electrode

N2–H2 plasma functionalization of carbon fiber fabric for polyaniline grafting

Influence of heat treatment and electrochemical treatment on the properties of PANI electrodeposited on carbon fiber felt

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N₂–H₂ plasma functionalization of carbon fiber fabric for polyaniline grafting