Facile synthesis of groove-like NiMoO 4 hollow nanorods for high-performance supercapacitors

Lin, Liyang; Liu, Tianmo; Liu, Jianlin; Sun, Rong; Hao, Jinghua; Ji, Kemeng; Wang, Zhongchang

doi:10.1016/j.apsusc.2015.11.018

Cited by 50 publications

(24 citation statements)

References 20 publications

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“…Nickel molybdate nanorods were synthesized via a hydrothermal reaction between aqueous Ni and Mo salts, following several prior reports. 24,[60][61][62][63][64][65][66][67][68] In a representative synthesis, 0.15 g of nickel nitrate hexahydrate (98%, Alfa Aesar) and 0.12 g of sodium molybdate dihydrate (99.5%, Alfa Aesar) were added to 15 mL of deionized water (purified using a Millipore Advantage A10 system) and dissolved by sonication in an ultrasonic bath (Branson M1800). Ni gauze (Alfa Aesar, 100 mesh, 100 mm dia wire) was cut into several 3x8 cm strips and cleaned by ultrasonication for 5-10 minutes in 2 M hydrochloric acid (99.5%, Fisher Scientific), followed by rinsing in ethanol (99.5%, Decon laboratories) and de-ionized water.…”

Section: Methodsmentioning

confidence: 99%

Direct Observation of Ni–Mo Catalyst Formation via Thermal Reduction of Nickel Molybdate Nanorods

Patil¹,

House²,

Mantri³

et al. 2020

Preprint

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Ni-Mo composites are known to catalyze several industrial relevant reactions involving hydrogen. Our interest is in Ni-Mo composites for hydrogen evolution reaction in alkaline anion exchange membrane water electrolyzers. We recently found that Ni-Mo composites comprise of core-shell structure where the core is metallic, rich in Ni while the shell is Mo-rich oxide. The transformation of the oxide intermediate into a core-shell architecture is studied in this work using <i>in situ</i> transmission electron microscopy. We reduced nickel molybdate nanorods in environmental transmission electron microscope and observed its transformation into the Ni-Mo catalyst composite. We further correlated these chemical transformations with the observed hydrogen evolution activity.

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Section: Methodsmentioning

confidence: 99%

Direct Observation of Ni–Mo Catalyst Formation via Thermal Reduction of Nickel Molybdate Nanorods

Patil¹,

House²,

Mantri³

et al. 2020

Preprint

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“…A schematic illustration of the process of forming NiMoO4 nanorods is shown in Fig. 3 (a) [34]. At room temperature Ni 2+ і MoO4 2ions are neutralized in deionized water, forming a clear solution.…”

Section: Hydrothermal Synthesismentioning

confidence: 99%

“…At room temperature Ni 2+ і MoO4 2ions are neutralized in deionized water, forming a clear solution. In [34], the influence of heating time (1, 2, 4 and 6 h) on the state and morphology of the final materials was investigated. The authors found that: nanorods NiMoO4 with an average length of 4.1 μm are formed when the reaction proceeds at 160 • C for 1 h (Fig.…”

Section: Hydrothermal Synthesismentioning

confidence: 99%

Methods of obtaining nickel molybdates and composites of molybdate/carbon material for electrodes of hybrid supercapacitors (Review)

Popovych

Budzulyak

Kotsyubynsky

et al. 2020

Phys. Chem. Solid St.

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Nickel molybdate due to its electronic configuration, stable crystalline framework, oxidation-reduction behavior displays perfect physical and chemical properties and rather high electrical conductivity that altogether lets the material display high total capacity. The research work classified modern methods of obtaining nickel molybdates and composites with carbon material on their basis. We have analyzed the fundamental stages of hydrothermal, microwave synthesis, ultrasonic dispersion, mechano-chemical, sol-gel method, and chemical precipitation method. The influence of different synthesis conditions on phase structure, morphology, physical and electrochemical properties of material was displayed.

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“…Guo et al [16] developed NiMoO 4 nanowires loaded on a Ni foam electrode that delivered a superior SC of 1308 Fg −1 at 74.7 Ag −1 . Likewise, Lin et al [17] developed groove-like NiMoO 4 hollow nanorods for high-performance supercapacitors, and the electrodes had a high SC of 1102 Fg −1 at a current density of 1 Ag −1 . Senthilkumar et al [18] synthesized nano α-NiMoO 4 as a new electrode material for supercapacitors and calculated the SC at a current density of 1.2 Ag −1 as 1517 Fg −1 .…”

Section: Introductionmentioning

confidence: 99%

Nanofiber NiMoO4/g-C3N4 Composite Electrode Materials for Redox Supercapacitor Applications

et al. 2020

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NiMoO4/g-C3N4 was fabricated by a hydrothermal method and used as an electrode material in a supercapacitor. The samples were characterized by XRD, FTIR, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) to study the physical and structural properties of the as-prepared NiMoO4/g-C3N4 material. The electrochemical responses of pristine NiMoO4 and the NiMoO4/g-C3N4 nanocomposite material were investigated by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS). From the CD studies, the NiMoO4/g-C3N4 nanocomposite revealed a higher maximum specific capacitance (510 Fg−1) in comparison to pristine NiMoO4 (203 Fg−1). In addition, the NiMoO4/g-C3N4 composite electrode material exhibited high stability, which maintained up to 91.8% capacity even after 2000 charge-discharge cycles. Finally, NiMoO4/g-C3N4 was found to exhibit an energy density value of 11.3 Whkg−1. These findings clearly suggested that NiMoO4/g-C3N4 could be a suitable electrode material for electrochemical capacitors.

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Facile synthesis of groove-like NiMoO 4 hollow nanorods for high-performance supercapacitors

Cited by 50 publications

References 20 publications

Direct Observation of Ni–Mo Catalyst Formation via Thermal Reduction of Nickel Molybdate Nanorods

Direct Observation of Ni–Mo Catalyst Formation via Thermal Reduction of Nickel Molybdate Nanorods

Methods of obtaining nickel molybdates and composites of molybdate/carbon material for electrodes of hybrid supercapacitors (Review)

Nanofiber NiMoO4/g-C3N4 Composite Electrode Materials for Redox Supercapacitor Applications

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