A facile sonochemical assisted synthesis of α-MnMoO 4 /PANI nanocomposite electrode for supercapacitor applications

Yesuraj, Johnbosco; Elumalai, Viswanathan; Bhagavathiachari, Muthuraaman; Samuel, Austin Suthanthiraraj; Elaiyappillai, Elanthamilan; Johnson, Princy Merlin

doi:10.1016/j.jelechem.2017.05.019

Cited by 113 publications

(33 citation statements)

References 62 publications

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“…These types of electrode materials are low cost and naturally abundant, with significant specific capacity based on redox reactions and high electrochemical activity [12]. Lately, binary metal oxides such as NiCo 2 O 4 [13], NiMoO 4 [14,15], CoMoO 4 [16], and MnMoO 4 [17] have attracted significant attention as good candidates for supercapacitors. Binary metal oxides present different oxidation states and significantly higher electrical conductivity than single metal oxides.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a NiMoO4/3D-rGO Nanocomposite via Starch Medium Precipitation Method for Supercapacitor Performance

et al. 2020

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This paper presents research on the synergistic effects of nickel molybdate and reduced graphene oxide as a nanocomposite for further development of energy storage systems. An enhancement in the electrochemical performance of supercapacitor electrodes occurs by synthesizing highly porous structures and achieving more surface area. In this work, a chemical precipitation technique was used to synthesize the NiMoO4/3D-rGO nanocomposite in a starch media. Starch was used to develop the porosities of the nanostructure. A temperature of 350 °C was applied to transform graphene oxide sheets to reduced graphene oxide and remove the starch to obtain the NiMoO4/3D-rGO nanocomposite with porous structure. The X-ray diffraction pattern of the NiMoO4 nano particles indicated a monoclinic structure. Also, the scanning electron microscope observation showed that the NiMoO4 NPs were dispersed across the rGO sheets. The electrochemical results of the NiMoO4/3D-rGO electrode revealed that the incorporation of rGO sheets with NiMoO4 NPs increased the capacity of the nanocomposite. Therefore, a significant increase in the specific capacity of the electrode was observed with the NiMoO4/3D-rGO nanocomposite (450 Cg−1 or 900 Fg−1) when compared with bare NiMoO4 nanoparticles (350 Cg−1 or 700 Fg−1) at the current density of 1 A g−1. Our findings show that the incorporation of rGO and NiMoO4 NP redox reactions with a porous structure can benefit the future development of supercapacitors.

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Section: Introductionmentioning

confidence: 99%

Synthesis of a NiMoO4/3D-rGO Nanocomposite via Starch Medium Precipitation Method for Supercapacitor Performance

et al. 2020

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“…Figure 3B clearly shows that AC particles have fairly smooth surface morphology. During the charge transfer reactions, it is expected that these spongy particle must have increased the active surface sites between the electrode/electrolyte interfaces 23,24 . It is also envisaged that the electrolyte ions ( H + , SO 4 −2 ) might have also intercalated into the PANI chains and enhanced the performance of the electrode material.…”

Section: Resultsmentioning

confidence: 99%

Improved electrochemical performance of symmetric polyaniline/activated carbon hybrid for high supercapacitance: Comparison with indirect capacitance

Singh

Kumar

Husain

2021

Polymers for Advanced Techs

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Polyaniline (PANI) chains doped with very small amount of Activated Carbon (AC) as an electrode material in aqueous H2SO4 electrolyte was successfully employed in this work to enhance the electrochemical capacitive properties of PANI. The aim of this research is to improve overall specific capacitance of PANI by incorporating only minute amount of AC as a PANI dopant. There are many reports available on PANI/AC but the use of such a minute amount of AC in H2SO4 electrolyte which enhances the overall specific capacity of the composite has not been reported elsewhere. An improvement in the specific capacitance from 763.44 to 897.50 F g−1 in aqueous 0.1 M H2SO4 electrolyte solution is observed by adding mere 0.04 g of AC. It is envisaged that AC enhances SO4−2 ion transportation, forwards a stable and fast surface redox reactions, hence collectively improving the overall capacitive performance of supercapacitor electrode. The charge/discharge measurements shows that AC particles stops the PANI chains degradation during charge/discharge cycle. Also, the retention rate (54%) of PANI1.0/AC0.04 indicates approximately 11% more stability than pure PANI (43%) electrode alone. It was further observed that the electrochemical impedance parameters viz., that charge transfer resistance (Rct) (0.79 Ω), response frequency (0.26 Hz), response time (3.84 s) and knee frequency (9.16 Hz) of PANI1.0/AC0.04 electrode material shows excellent performance of the PANI doped AC. Considering its high specific capacitance, low‐cost and ease of synthesis, PANI1.0/AC0.04 seems to be a promising electrode material for next generation symmetric supercapacitors.

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“…The electric double-layer capacitors store energy through ion absorption and pseudocapacitors store energy by electrochemical redox reactions [3][4][5]. In addition, the pseudo-capacitor materials possess higher specific capacitance than electric double-layer capacitor materials due to redox reaction [2,6,7]. Fascinatingly, ruthenium oxide (RuO 2 ) is generally acknowledged as a better alternate for pseudocapacitor electrode as it exhibits high conductivity and superior specific capacitance, and good durability.…”

Section: Introductionmentioning

confidence: 99%

CTAB-templated formation of CuCo2O4/CuO nanorods and nanosheets for high-performance supercapacitor applications

Sivashanmugam¹,

Kunhikrishnan²,

Preethi

et al. 2021

J Mater Sci: Mater Electron

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In the present work, Copper cobaltites (CuCo 2 O 4 ) were efficiently developed by the CTAB-assisted sonochemical process succeeded by calcination at 350 °C for 3 h. The differential scanning calorimetric analysis results showed that all the reactions ended at 300 °C. The Fourier transform infrared spectroscopy and X-ray diffraction results established the formation of spinel CuCo 2 O 4 /CuO. The morphological analytic results exposed that CuCo 2 O 4 possesses both the nanorods and nanoparticles structure. Furthermore, cyclic voltammetry (CV) and chronopotentiometric (CP) methods were used to evaluate the electrochemical properties of various CuCo 2 O 4 formed. It is observed that the freshly prepared CuCo 2 O 4 electrodes exhibit a very high specific capacitance of 811 Fg -1 at a scan rate of 5 mV s -1 and also demonstrates superior cycling stability retaining 91% of the initial capacitance even after 3000 continuous CV cycles. Hence, typical CuCo 2 O 4 could be considered as an important electrode material for supercapacitor applications.

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A facile sonochemical assisted synthesis of α-MnMoO 4 /PANI nanocomposite electrode for supercapacitor applications

Cited by 113 publications

References 62 publications

Synthesis of a NiMoO4/3D-rGO Nanocomposite via Starch Medium Precipitation Method for Supercapacitor Performance

Synthesis of a NiMoO4/3D-rGO Nanocomposite via Starch Medium Precipitation Method for Supercapacitor Performance

Improved electrochemical performance of symmetric polyaniline/activated carbon hybrid for high supercapacitance: Comparison with indirect capacitance

CTAB-templated formation of CuCo2O4/CuO nanorods and nanosheets for high-performance supercapacitor applications

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