Fabrication and performance evaluation of symmetrical supercapacitor based on manganese oxide nanorods–PANI composite

Naveen, A. Nirmalesh; Selvasekarapandian, S.

doi:10.1016/j.mssp.2015.07.025

Cited by 36 publications

(3 citation statements)

References 48 publications

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“…5(b). Apparently, all GCD curves show a nearly triangular shape with a little deviation, corresponding to the signature of a redox-type storage mechanism 43 with good electrochemical reversibility 24 . The specific capacitance of 148.07 F/g is obtained at a current density of 0.3 A/g.…”

Section: Resultsmentioning

confidence: 94%

Asymmetric supercapacitor of functionalised electrospun carbon fibers/poly(3,4-ethylenedioxythiophene)/manganese oxide//activated carbon with superior electrochemical performance

Abdah

Azman

Kulandaivalu

et al. 2019

Sci Rep

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Asymmetric supercapacitors (ASC) have shown a great potential candidate for high-performance supercapacitor due to their wide operating potential which can remarkably enhance the capacitive behaviour. In present work, a novel positive electrode derived from functionalised carbon nanofibers/poly(3,4-ethylenedioxythiophene)/manganese oxide (f-CNFs/PEDOT/MnO2) was prepared using a multi-step route and activated carbon (AC) was fabricated as a negative electrode for ASC. A uniform distribution of PEDOT and MnO2 on f-CNFs as well as porous granular of AC are well-observed in FESEM. The assembled f-CNFs/PEDOT/MnO2//AC with an operating potential of 1.6 V can achieve a maximum specific capacitance of 537 F/g at a scan rate of 5 mV/s and good cycling stability (81.06% after cycling 8000 times). Furthermore, the as-prepared ASC exhibited reasonably high specific energy of 49.4 Wh/kg and low charge transfer resistance (Rct) of 2.27 Ω, thus, confirming f-CNFs/PEDOT/MnO2//AC as a promising electrode material for the future energy storage system.

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Section: Resultsmentioning

confidence: 94%

Asymmetric supercapacitor of functionalised electrospun carbon fibers/poly(3,4-ethylenedioxythiophene)/manganese oxide//activated carbon with superior electrochemical performance

Abdah

Azman

Kulandaivalu

et al. 2019

Sci Rep

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show abstract

“…The vast majority of publications related to surfactants and supercapacitor electrode materials deal with either the use of surfactants during synthesis and electrode preparation (for an overview see [147]) or explicitly claim a surfactant-free process [148][149][150][151][152][153][154][155][156][157][158][159][160][161][162][163][164]. During synthesis, surfactants served as soft templates by increasing the wettability of reactants [165] or by controlling particle morphology, pore size distribution and surface area [146,166,167].…”

Section: Other Uses Of Surfactants Related To Supercapacitorsmentioning

confidence: 99%

Surfactants as Performance-Enhancing Additives in Supercapacitor Electrolyte Solutions—An Overview

Chen,

Holze

2023

Batteries

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Wetting the surface area of an electrode material as completely as possible is desirable to achieve optimum specific capacity of an electrode material. Keeping this surface area utilized even at high current densities and even when inside pores is required for high capacitance retention. The addition of surfactants at very small concentrations to aqueous supercapacitor electrolyte solutions has been suggested as a way to improve performance in terms of capacitance, capacitance retention at increased current density and stability. Effects are pronounced with carbon materials used in electrochemical double-layer capacitors; they are also observed with redox materials. The causes of the observed improvements and mode of operation of the added surfactants seem to need further investigation; they are inconclusive beyond the obvious statement of increased wetting. Reported examples and the current state of understanding are reviewed.

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“…The electrolyte was prepared using 1.2 g of polyvinyl alcohol, 10 mL of sulfuric acid and 0.5 g of lithium per chloride oxalate and for the electrode, the anode and cathode was coated with the same sample in an aluminum foil which was prepared with 50 mg of Mn/N-APC, 10 mg of polyvinylidenediflouride, 0.25 mL of N-methyl 2 propylidene and 0.25 mL of isopropyl alcohol. 34 The fabricated electrode is shown in Figure 9A-D. The electrochemical studies of the fabricated electrode are shown in Figure 10A-C. and the corresponding values are given in Table 7.…”

Section: Fabrication Of Electrode Fabrication and Performancementioning

confidence: 99%

Preparation of activated petroleum coke for supercapacitor application

et al. 2020

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The present work is to use petroleum coke as a carbon material for energy storage application. Activated petroleum coke (APC) is prepared using potassium hydroxide as an activation agent. Then the APC is doped with nitrogen and manganese-nitrogen components to enhance the capacitance of the material. The X-ray diffraction result shows the turbo static behavior, which is fully disordered structure. The Fourier transform infrared spectroscopy shows the functional groups present in the prepared sample. Using the cyclic voltametry, the specific capacitances are found to be 3.2, 4.8, and 6.3 F/g for APC, nitrogendoped activated petroleum coke (N-APC), and manganese-and nitrogen-doped activated petroleum coke (Mn/N-APC), respectively. The specific capacitance of charge and discharge are also found to be 3.5, 5.2, and 10.3 F/g, respectively, for the above-prepared materials. The specific capacitance of the fabricated Mn/N-APC electrode was found to be 76.1 F/g. From the experimental results, the energy density and power density was found to be 105 and 131.2 Wh/kg, respectively, for the abovementioned material. It is concluded from the present experiment that Mn/N-APC shows good electrochemical properties. Hence, this can be used as a supercapacitor for energy storage applications.

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Fabrication and performance evaluation of symmetrical supercapacitor based on manganese oxide nanorods–PANI composite

Cited by 36 publications

References 48 publications

Asymmetric supercapacitor of functionalised electrospun carbon fibers/poly(3,4-ethylenedioxythiophene)/manganese oxide//activated carbon with superior electrochemical performance

Asymmetric supercapacitor of functionalised electrospun carbon fibers/poly(3,4-ethylenedioxythiophene)/manganese oxide//activated carbon with superior electrochemical performance

Surfactants as Performance-Enhancing Additives in Supercapacitor Electrolyte Solutions—An Overview

Preparation of activated petroleum coke for supercapacitor application

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