A three-dimensional nanostructured PANI/MnO x porous microsphere and its capacitive performance

Huo, Yuqiu; Zhang, Haiying; Jiang, Jianyan; Yang, Yang

doi:10.1007/s10853-012-6654-1

Cited by 23 publications

(2 citation statements)

References 51 publications

(55 reference statements)

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“…On the basis of this approach, the development of conducting nanocomposites received significant attention; various metal oxides that have been reported, such as Fe 3 O 4 , TiO 2 , MnO 2 , NiO, ZnO, and SnO 2 , can improve the capacitance of PANI-based supercapacitors and also their environment friendliness. Huo et al [23] has reported that the specific capacitance of the 3D nanostructured PANI-MnO x porous microspheres exhibited a maximum value of 828 F g −1 at current density of 2 mA cm −2 . Chitosan-zinc oxide (ZnO)/ polyaniline (CS-ZnO/PANI) ternary nanocomposites had been successfully synthesized by Pandiselvi K. [24]; the mesoporous CS 0.12 -ZnO 2.5 /PANI electrode yields larger specific capacitance of 587.15 F g −1 than the corresponding PANI-ZnO electrode, and the capacitance retention is 80 % after 1000 charge/discharge cycles at 175 mA cm −2 current density.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of polyaniline/NiCo2O4 nanocomposites with enhanced electrochemical properties for supercapacitors

Chen

Zhang

et al. 2015

Ionics

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A b s t r a c t P o l y a n i l i n e / N i C o 2 O 4 nan oco mpos ites (PANI/NiCo 2 O 4 ) with different amounts of NiCo 2 O 4 (5, 8, 10, 15, and 20 wt%) were prepared via in situ chemical oxidation polymerization in the presence of the NiCo 2 O 4 particles, while the NiCo 2 O 4 nanoparticles were synthesized by a modified sol-gel method. The structure and morphology of PANI/NiCo 2 O 4 nanocomposites were characterized by Fourier transform infrared (FT-IR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) techniques, respectively. The electrochemical properties of PANI/NiCo 2 O 4 nanocomposites were investigated by cyclic voltammetry, galvanostatic charge-discharge test, and electrochemical impedance spectroscopy (EIS) in 0.5 mol L −1 H 2 SO 4 electrolyte in three-electrode system. The PANI/10 wt% NiCo 2 O 4 nanocomposites show larger specific capacitance of 439.4 F g −1 at a current density of 5 mA cm −2 and lower resistance compared with the pure PANI. The charge-discharge tests showed that the PANI/NiCo 2 O 4 nanocomposites possessed good cycling stability. It maintained about 66.11 % of the initial capacitance after 1000 cycles at a current density of 5 mA cm −2 . The results indicated that the PANI/NiCo 2 O 4 nanocomposites are a promising material for supercapacitors.

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Section: Introductionmentioning

confidence: 99%

Facile synthesis of polyaniline/NiCo2O4 nanocomposites with enhanced electrochemical properties for supercapacitors

Chen

Zhang

et al. 2015

Ionics

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“…Since the capability of electrode materials is significantly influenced by its surface area and morphology, the electrode material with a high surface area and a uniform, ordered pore network of nanometer dimension would be expected to exhibit superior performance in an electrochemical capacitors system. As we have synthesized the 3D nanostructured PANI-MnO x porous microspheres by oxidizing aniline with KMnO 4 under interfacial chemical synthesis with 4-aminothiophenol (4-ATP) as the structure-directing agent on the Au substrate [8]. So in this paper we prepared PANI/Ni(OH) 2 by oxidizing aniline with (NH 4 ) 2 S 2 O 8 under interfacial chemical synthesis with 4-aminothiophenol (4-ATP) as the structure-directing agent on the Au substrate.…”

Section: Introductionmentioning

confidence: 99%

Capacitive Properties of Polyaniline/Nickel Hydroxide Composites Prepared by Using 4-Amino Thiophenol as the Structure Directing Agent

Huo

2014

AMM

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Polyaniline/Nickel hydroxide composites were successfully obtained on the Au substrate pretreated by 4-ATP. They were characterized by fourier transform infrared (FT-IR) spectroscopy and scan electron microscopy (SEM). The capacitance performance of PANI/Ni (OH)2 composites were studied by cyclic voltammetry and galvanostatic charge/discharge. The specific capacitance of Polyaniline/Nickel hydroxide composite is up to 310 F/g at the current density of 1 mA/cm2 in 1.0 mol/L Na2SO4 solution. Electrode mass increases from 0.14 mg to 0.21 mg, specific capacitance decreases 7.7%. A symmetric capacitor was assembled by using PANI/Ni (OH)2 as both of the positive and negative electrodes and 1 M Na2SO4 as the electrolyte. It displays a energy density of 6.0 Wh kg-1 at the power density of 3125 W kg-1, which is much higher than symmetric capacitor assembled by PANI-PANI (4.9 Wh kg-1) and Ni (OH)2-Ni (OH)2 (3.5 Wh kg-1).

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Capacitive performance of polyaniline/manganese dioxide nanofiber microsphere

Huo

Zhang

2014

J of Applied Polymer Sci

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This work has obtained polyaniline/manganese dioxide (PANI/MnO2) nanofibers microsphere by interfacial chemical synthesis with 4‐amino‐thiophenol (4‐ATP) as the structure‐directing agent on the Au substrate. The cyclic voltammograms, galvanostatic charge–discharge, and electrochemical impedance spectroscopy were used to determine their capacitive performance. Powder X‐ray diffraction, thermogravimetry and differential scanning calorimetry, Fourier transformed infrared spectroscopy, Brunauer–Emmett–Teller surface area measurements, and scanning electron microscope were performed for physical and chemical characterization. The effect of 4‐ATP and acids on the capacitive performance of PANI/MnO2 nanofibers microsphere was elucidated. The as‐prepared PANI/MnO2 was nanofiber about 30 nm diameters, and they further self‐assembled into sphere. Its specific capacitance is up to 765 F g−1 at 1.0 mA cm−2 in 1.0M Na2SO4 solution. And it shows a high stability with a capacitance fade of only 14.9% after 400 charge–discharge cycles. The symmetric capacitor of PANI/MnO2 (PM10+)/PANI/MnO2 (PM10−) is assembled in 1.0M Na2SO4 solution, and its capacitive performance is compared with that of PANI (+)/PANI (−) and MnO2 (+)/MnO2 (−). © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40575.

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A three-dimensional nanostructured PANI/MnO x porous microsphere and its capacitive performance

Cited by 23 publications

References 51 publications

Facile synthesis of polyaniline/NiCo2O4 nanocomposites with enhanced electrochemical properties for supercapacitors

Facile synthesis of polyaniline/NiCo2O4 nanocomposites with enhanced electrochemical properties for supercapacitors

Capacitive Properties of Polyaniline/Nickel Hydroxide Composites Prepared by Using 4-Amino Thiophenol as the Structure Directing Agent

Capacitive performance of polyaniline/manganese dioxide nanofiber microsphere

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