Direct electrodeposition and superior pseudocapacitive property of ultrahigh porous silver-incorporated polyaniline films

Sawangphruk, Montree; Kaewsongpol, Tanon

doi:10.1016/j.matlet.2012.07.103

Cited by 45 publications

(16 citation statements)

References 18 publications

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“…Among various pseudocapacitive materials that have been studied, PANI has attracted great attention as one of the most promising pseudocapacitive polymer material suitable for the next generation of supercapacitors. This is due to its attractive properties such as high pseudocapacitance, light weight, low cost, controllable electrical conductivity, high energy density, facile synthesis, and environmental friendliness [18][19][20][21]. PANI is often used as electrode material for supercapacitors and it has three oxidation states (leucoemeraldine, emeraldine salt, and pernigraniline) which contribute to its high specific capacitance [22].…”

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confidence: 99%

Asymmetric supercapacitor based on vanadium disulfide nanosheets as a cathode and carbonized iron cations adsorbed onto polyaniline as an anode

Rantho

Madito

Ochai-Ejeh

et al. 2018

Electrochimica Acta

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Highlights• VS 2 nanosheets electrode material was synthesized by the hydrothermal method.• C-Fe/PANI was synthesized on nickel foam by pyrolysis of the iron-PANI mixture.• The device was fabricated using VS 2 as a cathode and C-Fe/PANI as an anode.• VS 2 //C-Fe/PANI asymmetric device exhibited good electrochemical performance.ABSTRACT VS 2 nanosheets electrode material was successfully synthesized by the hydrothermal method, and the electrode material (C-Fe/PANI) based on the carbonization of Fe cations adsorbed onto polyaniline (PANI) was directly synthesized on a nickel foam (current collector) by pyrolysis of the iron-PANI mixture coated on nickel foam in a tube furnace under the N 2 atmosphere. The structural and morphological characterization of the as-synthesized electrode materials was carried out using X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared (FT-IR) spectroscopy and scanning electron microscopy (SEM). The electrochemical behavior of each working electrode was analyzed in a three-electrode cell configuration using 6 M KOH electrolyte, and thereafter, a hybrid (asymmetric) device was successfully fabricated using VS 2 nanosheets as the positive electrode and C-Fe/PANI as a negative electrode. The fabricated VS 2 //C-Fe/PANI asymmetric device was found to perform at a high applied potential difference of 1.7 V in 6 M KOH. At a current density of 2 A g -1 , this device exhibited high energy and power densities of 27.8 Wh kg -1 and 2991.5 W kg -1 respectively. In addition, a VS 2 //C-Fe/PANI 2 device showed excellent cycling stability with 95% capacity retention over 10 000 galvanostatic charge-discharge cycles at a current density of 5 A g -1 . storage 1. INTRODUCTION Supercapacitors (SCs) which are also referred to as electrochemical capacitors (ECs) have attracted great interest for the important application in the area of electrochemical energy storage because of increasing demand for digital communication, electric vehicles and other electric devices at high pulse power level [1-7]. Since, SCs are high power-delivery storage devices which are able to discharge in a shorter time by exploiting their fast surface or near surface reactions and delivering high power compared to conventional batteries [2,8-10]. Though, SCs are high power-delivery storage devices (have high power density) they have low energy density especially compared to rechargeable batteries (Li-ion batteries) [2,11]. Accordingly, researchfocus in SCs is on improving their energy density (i.e. ~5˗8 Wh kg -1 ) without compromising their high power density (i.e. ~5˗30 kW kg -1 ), unlike in rechargeable batteries which already have high energy density in the range of 120˗200 Wh kg -1 , the focus will be on improving the power density which is in the range of 0.4˗3 kW kg -1 [2,8,9,12]. Recently, asymmetric (hybrid) systems have been explored to increase the operating electrode potential to improve the energy density of the SCs. Generally, the behavior of the SCs is mainly influenced by the charge storage mecha...

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Asymmetric supercapacitor based on vanadium disulfide nanosheets as a cathode and carbonized iron cations adsorbed onto polyaniline as an anode

Rantho

Madito

Ochai-Ejeh

et al. 2018

Electrochimica Acta

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“…It showed that this composite can be used as electrode material for the super capacitor. M. Sawangphruk et al [ 10 ] studied the capacitance of a porous nano-PANI–Ag composite which was prepared via potentiostatic deposition. It was found that this composite had high specific capacitance (430 F/g) and excellent stability.…”

Section: Introductionmentioning

confidence: 99%

Novel Polyaniline–Silver–Sulfur Nanotube Composite as Cathode Material for Lithium–Sulfur Battery

Wang

et al. 2021

Materials

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The preparation and characterization of a polyaniline–silver–sulfur nanotube composite were reported in this paper. The polyaniline–silver nanotube composite was synthesized via an oxidation-reduction method in the sodium dodecyl sulfate (SDS) solution. After being vulcanized, the polyaniline–silver–sulfur (Poly (AN–Ag–S)) nanotube composite was prepared as active cathode material and assembled into lithium–sulfur (Li–S) batteries with electrolyte and negative electrode materials. When the feed ratio of raw materials (aniline and AgNO3) was 2:1, the initial specific capacity of poly (AN–Ag–S) composite cells reached 1114 mAh/g. The specific capacity was kept at 573 mAh/g, and the capacity retention rate stayed above 51% after 100 cycles. The introduction of Ag into the composite cathode material can effectively solve the poor conductivity of sulfur and improve the Li–S battery performance.

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“…Hybrid capacitors containing Ag are now quite common . In the research results published by Sawangphruk and Kaewsongpol, Ag exhibited good electrical conductivity while providing fast ion transport.…”

Section: Introductionmentioning

confidence: 99%

AgNP/crystalline PANI/EBP‐composite‐based supercapacitor electrode with internal chemical interactions

Kim

Manivannan

Balakumar

et al. 2019

J of Applied Polymer Sci

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In this article, polyaniline (PANI) was conformally coated on epoxide‐functionalized buckypaper (EBP). Because of the presence of epoxide functional groups, chemical interactions occurred between oxygen in the epoxide groups and NH in the PANI. These chemical interactions were identified by peak shifts and intensity changes in Raman spectra. Additionally, crystalline peaks were clearly observed through X‐ray diffraction. However, Raman peak changes or crystalline peaks were not observed in nonfunctionalized buckypaper (purified pristine buckypaper [PPBP])‐based composites. Both hydrogen bonding and crystalline nature of EBP‐PANI enhanced its electrical conductivity, producing a specific capacitance better than that of PPBP‐PANI. Finally, Ag nanoparticles (AgNPs) were applied to EBP‐PANI to further enhance its electrical conductivity. Owing to the presence of AgNPs and their interactions with the N in PANI, the specific capacitance of EBP‐PANI‐AgNP reached 915.62 F/g. These results emphasize the positive effect of chemical interactions and crystalline nature of EBP‐based composites on their electrochemical performance. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48164.

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Direct electrodeposition and superior pseudocapacitive property of ultrahigh porous silver-incorporated polyaniline films

Cited by 45 publications

References 18 publications

Asymmetric supercapacitor based on vanadium disulfide nanosheets as a cathode and carbonized iron cations adsorbed onto polyaniline as an anode

Asymmetric supercapacitor based on vanadium disulfide nanosheets as a cathode and carbonized iron cations adsorbed onto polyaniline as an anode

Novel Polyaniline–Silver–Sulfur Nanotube Composite as Cathode Material for Lithium–Sulfur Battery

AgNP/crystalline PANI/EBP‐composite‐based supercapacitor electrode with internal chemical interactions

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