Facile synthesis of MoO2 nanoparticles as high performance supercapacitor electrodes and photocatalysts

Zhou, En‐Long; Wang, Chenggang; Zhao, Qinqin; Li, Zhipeng; Shao, Mingwang; Deng, Xiaolong; Liu, Xiao Jing; Xu, Xijin

doi:10.1016/j.ceramint.2015.10.008

Cited by 80 publications

(33 citation statements)

References 33 publications

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“…It possesses superior electrochromic and catalytic properties [17] that can potentially be applied in storage media [18], gas sensors [19] and humidity sensors [20], organic solar cells [21]. The oxidation states of molybdenum oxide range from + 2 to + 6 and predominantly exist in two primary forms, namely molybdenum (IV) oxide and molybdenum (VI) oxide [22].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal approached 1-D molybdenum oxide nanostructures for high-performance supercapacitor application

et al. 2019

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Well-defined 1D molybdenum oxide nanostructures were synthesized using the hydrothermal method with sodium dodecyl sulfate as a capping agent with water as a solvent for the supercapacitor application at very low electrolyte concentration. The structural, morphological and optical properties of the as-prepared nanoparticles were characterized using X-ray diffraction, Field Emission Scanning Electron Microscope, and UV-visible spectroscopy. X-ray diffraction and FESEM studies revealed the formation of '1D Molybdenum Oxide nanorods with an average crystallite size of 31 nm. UV-visible spectroscopic analysis showed that the optical bandgap of molybdenum oxide nanorods to be 3.01 eV. The electrochemical performance of as synthesized nanorods was performed by using cyclic voltammetry, galavanostatic charge-discharge, and electrochemical impedance spectroscopy. The maximum specific capacitance obtained was 411 F g −1 in 0.1M NaOH electrolyte solution with excellent rate capability even at higher scan rates. Cyclic retention of 82.4% was observed even after 1000 cycles making it suitable electrode material for high-performance supercapacitor applications.

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Section: Introductionmentioning

confidence: 99%

Hydrothermal approached 1-D molybdenum oxide nanostructures for high-performance supercapacitor application

et al. 2019

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“…In [3], the MoO 2 /MoS 2 electrode indicates higher specific capacitance than that of pure MoO 2 and pure MoS 2 . A facile hydrothermal method was proposed in [4] for the synthesis of MoO 2 nanoparticles for high-performance supercapacitor electrodes and photocatalysts. In addition, the synthesis and electrochemical properties of MoO 2 /reduced graphene oxide hybrid for efficient anode of lithium ion battery were reported [5].…”

Section: Introductionmentioning

confidence: 99%

Mechanochemical Synthesis and Characterization of Molybdenum Dioxide-Hematite Nanostructures with Different Molarities

Knauss¹,

Ţolea²,

Văleanu³

et al. 2018

JMMCE

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xMoO 2-(1-x)α-Fe 2 O 3 nanoparticle system with molarities x = 0.1, 0.3, 0.5 and 0.7 was successfully synthesized by mechanochemical activation of MoO 2 and α-Fe 2 O 3 mixtures for 0-12 hours of ball milling time. X-ray powder diffraction (XRD), Mössbauer spectroscopy and magnetic measurements were used to study the phase evolution of the molybdenum dioxide-hematite nanoparticle system under the mechanochemical activation process. Rietveld refinement of the XRD patterns yielded the values of the crystallite size and lattice parameters as function of milling times and indicated the presence of Mo-substituted hematite and Fe-doped molybdenum dioxide at long milling times. The Mössbauer studies yielded the magnetic hyperfine fields and the relative abundance of a quadrupole-split doublet as function of the milling time for all molar concentrations involved. Recoilless fraction was determined using our dual absorber method and was found to decrease with increasing ball milling time. Magnetic measurements recorded at 5 and 300 K in an applied magnetic field of 50,000 Oe showed the magnetic properties in the antiferromagnetic and canted ferromagnetic states. The Morin transformation was evidenced by zero-field cooling-field cooling (ZFC-FC) measurements in a magnetic field of 200 Oe.

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“…The theoretical C sp values of MoS 2 and MoO 3 are 1504 and 2700 F g −1 , respectively . Also, MoO 2 was reported to exhibit high capacitance . Therefore, it is believed that the utilization of MoS 2 /MoO x is enhanced as a result of its growth on the ACC, that is, to allow the exposure of more surface areas.…”

Section: Resultsmentioning

confidence: 99%

MoS₂/MoO_x‐Nanostructure‐Decorated Activated Carbon Cloth for Enhanced Supercapacitor Performance

Sari

Ting

2018

ChemSusChem

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MoS /MoO nanostructures were grown on activated carbon cloth through a facile one-step microwave-assisted hydrothermal method. The growth of MoS /MoO on activated carbon cloth creates a unique structure that favors ion intercalation. The conductive activated carbon cloth, MoO , and monoclinic MoO provide fast electron transport, whereas the MoS nanosheets/MoO nanoparticles structure improves the capacitance. As a result, MoS /MoO -nanostructure-decorated activated carbon cloth shows a high specific capacitance of 230 F g at a scan rate of 5 mV s with a low contact resistance of approximately 1.91 Ω. Moreover, the activated carbon cloth acts as a template for the growth of a perpendicular MoS layer, which gives an excellent utilization rate of the active MoS /MoO material. We also demonstrate that the MoS /MoO /activated carbon cloth nanocomposite shows excellent electrochemical stability with retention up to 128 % after 1500 cycles. Finally, we show the use of a microwave-assisted hydrothermal method for the synthesis of the MoS /MoO /activated carbon cloth nanocomposite as an alternative and clean route to improve the kinetics of the intercalation redox reaction.

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Facile synthesis of MoO2 nanoparticles as high performance supercapacitor electrodes and photocatalysts

Cited by 80 publications

References 33 publications

Hydrothermal approached 1-D molybdenum oxide nanostructures for high-performance supercapacitor application

Hydrothermal approached 1-D molybdenum oxide nanostructures for high-performance supercapacitor application

Mechanochemical Synthesis and Characterization of Molybdenum Dioxide-Hematite Nanostructures with Different Molarities

MoS₂/MoO_x‐Nanostructure‐Decorated Activated Carbon Cloth for Enhanced Supercapacitor Performance

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Facile synthesis of MoO2 nanoparticles as high performance supercapacitor electrodes and photocatalysts

Cited by 80 publications

References 33 publications

Hydrothermal approached 1-D molybdenum oxide nanostructures for high-performance supercapacitor application

Hydrothermal approached 1-D molybdenum oxide nanostructures for high-performance supercapacitor application

Mechanochemical Synthesis and Characterization of Molybdenum Dioxide-Hematite Nanostructures with Different Molarities

MoS2/MoOx‐Nanostructure‐Decorated Activated Carbon Cloth for Enhanced Supercapacitor Performance

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MoS₂/MoO_x‐Nanostructure‐Decorated Activated Carbon Cloth for Enhanced Supercapacitor Performance