Structures and properties of chemically reduced polyanilines

Zeng, Xingrong; Ko, Tze‐Man

doi:10.1016/s0032-3861(97)00381-9

Cited by 287 publications

(198 citation statements)

References 25 publications

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“…Primly nine absorption peaks are observed. The broad band at 3,428 cm -1 was assigned to the free N-H stretching vibrations of secondary amines (Zeng and Ko 1998;Trchova et al 2006). The smaller one peak at 2,921 cm -1 is characterized to the vibration associated with the NH 2?…”

Section: Ftir Analysismentioning

confidence: 99%

Facile and novel route for preparation of nanostructured polyaniline (PANi) thin films

et al. 2012

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Simple and inexpensive single step facile novel chemical route for the preparation of polyaniline (PANi) nanofibers has been reported. These PANi nanofibers are characterized with X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, Field emission scanning electron microscopy (FESEM) and Transmission electron microscopy (TEM). Polyaniline nanofibers exhibit amorphous nature as confirmed from XRD and SAED study. Based on FESEM and TEM analysis, the formation of the polyaniline nanofibers with average diameter of about 40 nm was inferred. The presence of characteristic bonds of polyaniline was observed from FTIR spectroscopy technique. Electrical and optical properties revealed that p-type conductivity PANi with room temperature conductivity of 2.77 9 10 -5 (X cm) -1 has band gap of 3.40 eV. A blue shift of 0.86 eV with characteristic absorption peak at 441 nm has been attributed due to quantized size of polyaniline nanofibers.

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Section: Ftir Analysismentioning

confidence: 99%

Facile and novel route for preparation of nanostructured polyaniline (PANi) thin films

et al. 2012

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“…TGA profiles confirmed that the polymer material was stable to at least 300 o C. Emeralidine base (EB) form of polyaniline was found to be the most thermally stable form of polyaniline. TGA results indicated 57 that undoped polyaniline samples (EB) show lower weight losses before the thermal breakdown of the polymer backbone and thermal stability of the intrinsically oxidized PANi is dependent to dopant acid and is generally poor.…”

Section: Thermal Gravimetric Analysis (Tga)mentioning

confidence: 99%

Polyaniline Conducting Electroactive Polymers Thermal and Environmental Stability Studies

Ansari

Keivani

2006

Journal of Chemistry

133

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Abstract:In the current studies, polyaniline (PANi) was prepared both chemical and electrochemically in the presence of different bronsted acids from aqueous solutions. The effect of thermal treatment on electrical conductivity, and thermal stability of the PANi conducting polymers were investigated using 4-point probe and TGA techniques respectively. It was found that polymer prepared by CV method is more thermally stable than those prepared by the other electrochemical techniques. In this paper we have also reviewed some fundamental information about synthesis, general properties, diverse applications, thermal and environmental stability of polyaniline conducting polymers.

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“…As is shown in Table 1, the obtained specific capacitance is higher than the previous work of other researchers using different electrolyte. The higher capacitance is related to the electron gain or loss in the possible oxidation reduction reactions between the pairs of 3I´/I 3´, 5I´/I 5´, where occurred on the surface of electrode materials [42,64]. Therefore, the additional electrons gain and loss except for the PANI doped and doping in the electrolyte enhances the specific capacitance.…”

Section: Electrochemical Properties Analysismentioning

confidence: 99%

High Specific Capacitance of Polyaniline/Mesoporous Manganese Dioxide Composite Using KI-H2SO4 Electrolyte

Jiang

et al. 2015

Polymers

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Abstract:The PANI/Mesoporous MnO 2 composites were prepared through a simple one step method and we introduced the KI-H 2 SO 4 solution as the electrolyte of PANI/MnO 2 composites creatively. The characterization of structure, morphology, and composition are obtained by X-ray diffraction, Fourier transform infrared spectroscopy, thermal gravity analysis, Raman spectra, and scanning electron microscope. The electrochemical performances were investigated by constant-current charge-discharge, the voltammetry curve, and alternating current (AC) impedance technique. The specific capacitance of composites is 1405 F/g, which is almost 10 times larger than MnO 2 (158 F/g). We also find that the iodide concentration is closely related to the specific capacitance. Therefore, we explored the specific capacitance at different iodide concentration (0.05, 0.1, 0.2, 0.5, and 1 M), the results indicated that the specific capacitance reached a maximum value (1580 F/g) at 0.5 mol/L. Additionally, the PANI/Mesoporous MnO 2 composites not only exhibited a good ratio discharge property (857 F/g) at high current density, but also revealed an excellent cycling stability after 500 cycles, which retained 90% of the original specific capacitance.

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Structures and properties of chemically reduced polyanilines

Cited by 287 publications

References 25 publications

Facile and novel route for preparation of nanostructured polyaniline (PANi) thin films

Facile and novel route for preparation of nanostructured polyaniline (PANi) thin films

Polyaniline Conducting Electroactive Polymers Thermal and Environmental Stability Studies

High Specific Capacitance of Polyaniline/Mesoporous Manganese Dioxide Composite Using KI-H2SO4 Electrolyte

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