Carbon nanotube-polyaniline nanohybrids: Influence of the carbon nanotube characteristics on the morphological, spectroscopic, electrical and thermoelectric properties

King, Roch Chan Yu; Roussel, Frédérick; Brun, Jean-François; Gors, C.

doi:10.1016/j.synthmet.2012.05.029

Cited by 80 publications

(18 citation statements)

References 59 publications

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“…In the FTIR spectra, a strong characteristic band appearing at 1140 cm À1 is ascribed to the "electron-like band", it is considered to be a measure of the delocalization of the electrons and, thus, is indicative of the conductivity of PANI. 45,46 Aer coating of PANI on the clay-DPA, the spectrum reveals the presence of the polymer; the B-DPA x /PANI spectra show nearly identical wave numbers 1578 and 1486 cm À1 assigned to quinoid and benzenoid ring at, respectively. Note however that the band at 1140 cm À1 is lumped with the broad Si-O-Si stretching peak of bentonite in the 1000-1200 cm À1 spectral range.…”

Section: Vibrational Characterization By Ftir and Raman Spectroscopiesmentioning

confidence: 97%

Exfoliated clay/polyaniline nanocomposites through tandem diazonium cation exchange reactions and in situ oxidative polymerization of aniline

et al. 2014

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Section: Vibrational Characterization By Ftir and Raman Spectroscopiesmentioning

confidence: 97%

Exfoliated clay/polyaniline nanocomposites through tandem diazonium cation exchange reactions and in situ oxidative polymerization of aniline

et al. 2014

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“…Thus, the interaction that occurs at the interface of P@CNTF is estimated to be the π–π aromatic interaction between the delocalized orbitals in the outside of the CNTs walls and the aromatic rings of the doped polyaniline (Figure S5). − …”

Section: Resultsmentioning

confidence: 99%

Hybrid Polyaniline/Liquid Crystalline CNT Fiber Composite for Ultimate Flexible Supercapacitors

Kim

Lee

Jung

et al. 2021

ACS Appl. Energy Mater.

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CNT fibers (CNTFs) are excellent platforms for fiber-shaped supercapacitors, offering both high electric conductivity and mechanical resilience. Here, we propose a polyaniline (PANI)/CNTF composite structure that utilizes a state-of-the-art liquidcrystal (LC)-spun CNTF as the ultimate conductive and flexible electrode. CNTFs assume a highly dense LC phase with a high electrical conductivity of 14 kS cm −1 , which is similar to that of its metal counterpart and suitable as a good current collector. Pseudocapacitive PANI can be homogeneously polymerized directly onto the smooth surface of the CNTFs by using the sonochemical polymerization method. The optimized synthetic process produces PANI in a favorable chemical state with good contact properties at the CNTF interface, exhibiting a high capacitance (738 F g −1 at 1 A g −1 ) even at an extremely fast charge/ discharge rate (604 F g −1 at 100 A g −1 ). Moreover, the superior mechanical resilience of the CNTFs enables excellent flexibility, showing a negligible capacitance decay after 15 000 bending cycles, even with tight knots in the middle. These results highlight the excellent potential of highly densified CNTFs in next-generation flexible supercapacitors for practical wearable applications.

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“…A satellite peak can be observed in CNT/PANI/PMo, which should derive from π‐π interaction between CNTs and PANI. [ 30 ] Moreover, a 0.75 eV positive shift of N 1s peak can be observed in CNT/PMo/PANI. This maybe indicates that there is a stronger interaction between PMo and PANI than that between CNT and PANI.…”

Section: Resultsmentioning

confidence: 99%

Coaxial Cable‐Like Carbon Nanotubes‐Based Active Fibers for Highly Capacitive and Stable Supercapacitor

Yang

Xie

Wang

et al. 2020

Adv Materials Inter

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POMs) and carbon nanomaterials become a new option for achieving higher capacitance. [4] POMs are anionic metal-oxo clusters of [M x O y ] n− consisting of two or more metals (M, e.g., Mo, W, V) with high oxidation states which are linked by oxoligands. [5] Therefore POMs are the good candidates for supercapacitor due to their fast and reversible multi-electron redox reactions along with the high theoretical values. [6-8] However, POMs exhibit strong solubility in water and many organic solvents due to their anionic nature, which limits their broad application on supercapacitors. [9] Thus, tremendous efforts have been devoted to immobilizing POMs onto carbon materials. Anchoring POMs with carbon is extremely critical since it can not only prevent the dissolution of POMs but also enhance the conductivity. [10-14] There are three most straightforward and effective methods for the synthesis of POMcarbon composites: i) chemisorption, ii) self-assembly, and iii) immobilization in a polymer matrix. [8,15] For chemisorption, POMs molecules are usually adsorbed at defect sites (e.g., the surface functional groups, the crystal defects) by strong and irreversible bonding. Therefore the amount of chemisorbed POMs is dependent on the functionalization degree on carbon materials. [7] For self-assembly, since the POMs are electronegative in solution, the cationic polymer molecular should be used to modify the surface of carbon, such as polyethyleneimine (PEI), and poly(diallyldimethylammonium chloride) (PDDA). [16,17] For immobilization in a polymer matrix, it can be divided into two methods, including the two-step method and the one-step method. The former is POMs diffuse and incorporate into the previously deposited polymer matrix. The latter is the polymer film is formed in the presence of a POM solution. POMs with oxidative property can chemically polymerize monomer molecules to form a polymer film. [18] Meanwhile, the conductive polymer with intrinsic redox activity can contribute more pseudocapacitance. This inspires us to fabricate coaxial cable-like active fibers by using carbon nanotubes (CNTs) as conductive substrates, POMs as main active materials, and conductive polymer as a shield and active material. It is expected that the stability and specific capacitance could be significantly improved simultaneously. The pioneering study of Cs-PMo/chitosan/CNTs hybrid materials showed enhanced capacitance and good stability during 500 cycles. [19] Lian and co-workers demonstrated that the CNTs coated with the Polyoxometalate (POM) as one pseudocapacitive material could efficiently boost the capacitance of carbon materials. However, POM hydrolysis is a key obstacle in utilizing POM for supercapacitors, causing reduced cycling stability. Here, coaxial cable-like carbon nanotubes(CNTs)-based active fibers are synthesized for highly capacitive and stable supercapacitors. The POM layer of PMo 12 O 40 3− (PMo) is physically protected from the hydrolysis by the external polyaniline (PANI) layer. The optimal CNT/PMo/PANI fibers show...

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Carbon nanotube-polyaniline nanohybrids: Influence of the carbon nanotube characteristics on the morphological, spectroscopic, electrical and thermoelectric properties

Cited by 80 publications

References 59 publications

Exfoliated clay/polyaniline nanocomposites through tandem diazonium cation exchange reactions and in situ oxidative polymerization of aniline

Exfoliated clay/polyaniline nanocomposites through tandem diazonium cation exchange reactions and in situ oxidative polymerization of aniline

Hybrid Polyaniline/Liquid Crystalline CNT Fiber Composite for Ultimate Flexible Supercapacitors

Coaxial Cable‐Like Carbon Nanotubes‐Based Active Fibers for Highly Capacitive and Stable Supercapacitor

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