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Осмоловский, М. Г.; Kozhina, I.I.; Ivanova, L. Yu.; Baidakova, O. L.

doi:10.1023/a:1012702824705

Cited by 13 publications

(3 citation statements)

References 7 publications

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“…In this work, the synthesis of CrO 2 has been carried out by hydrothermal synthesis method from mixture of 250 g of high-purity chromium trioxide (CrO 3 ), 50 g of distilled water and some special modifiers, which govern the growth of particles [9]. The synthesis was performed in an autoclave from stainless steel.…”

Section: Preparation and Characterization Of The Chromium Dioxide Powdermentioning

confidence: 99%

Transport and magnetotransport properties of cold-pressed CrO2 powder, prepared by hydrothermal synthesis

Белевцев

Далакова

Osmolowsky

et al. 2009

Journal of Alloys and Compounds

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a b s t r a c tSubmicron powder of CrO 2 was prepared by hydrothermal synthesis method from chromium trioxide with use of special modifiers, which govern the growth of particles. Particles obtained were of rounded form with mean diameter about 120 nm. The powder (stabilized with thin surface layer of ␤-CrOOH) has been characterized by structural, X-ray and magnetic measurements. The powder under investigation (with Curie temperature about 385 K) was cold-pressed and its transport and magnetotransport properties have been measured in the temperature range 4-450 K in magnetic field up to 1.6 T. The samples studied is characterized by non-metallic temperature behavior of resistance and large negative magnetoresistance (MR) in low temperature range. At T = 5 K the MR magnitude has been −17% at H = 0.3 T and −20% at H = 1.4 T. Its magnitude decreased fast with increase in temperature reducing to 0.3% and less for T > 200 K. It is shown that this MR behavior is inherent for a system of magnetic grains with spindependent intergrain tunnelling. Some peculiarities of MR behavior in low-temperature range (below 40 K) can be associated with percolating character of tunnelling conductivity of this granular system under conditions of availability of only few conducting current paths through the sample.

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Section: Preparation and Characterization Of The Chromium Dioxide Powdermentioning

confidence: 99%

Transport and magnetotransport properties of cold-pressed CrO2 powder, prepared by hydrothermal synthesis

Белевцев

Далакова

Osmolowsky

et al. 2009

Journal of Alloys and Compounds

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“…Chromium dioxide nanoparticles were prepared via hydrothermal route at 330°С from CrO 3 , tin dioxide, and metatelluric acid in stainless steel autoclave as described elsewhere [1,10,12,13]. The product was removed from the ampule, ground with a knife mill, washed with distilled water, and dried in an oven.…”

Section: Letters To the Editormentioning

confidence: 99%

Synthesis of single-domain chromium dioxide nanoparticles with high coercivity

et al. 2015

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“…In this method, raw materials are converted to products under high temperatures over 100 °C and high pressures over 1 bar in aqueous media. Synthesis of nanoparticles with a rare oxidation state, low temperature phase, and metastable condition are some features of the hydrothermal method . This study aimed to explore the supercapacitive performance of NiMoO 4 /MoO 3 in alkaline media.…”

Section: Introductionmentioning

confidence: 99%

A Unique 3D Structured NiMoO₄/MoO₃ Heterojunction for Enhanced Supercapacitor Performance

Salari

Shayeh

2021

Energy Fuels

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The novel 3D nanoporous nickel molybdate-molybdenum trioxide (NiMoO4/MoO3) was fabricated by a facile template free method to exploit the synergistic effect for charge storage performance. The physicoelectrochemical properties of the composite and pristine materials such as NiO, MoO3, and NiMoO4 electrodes were studied and compared together by using XRD, SEM, BET, HRTEM, XPS, CV, EIS, etc. The analysis showed that the NiMoO4 structure prepared a good substrate for MoO3 particles and resulted in an increase in the optical absorption of the composite electrode. According to electrochemical results, the NiMoO4/MoO3 nanostructure has higher electrical conductivity than other materials with the specific capacitance calculated about 720 F·g–1. The results indicated that, by NiMoO4/MoO3 heterojunction formation, the charge transfer and electrochemical performance were strongly increased. Continuous charge/discharge experiment proved the stability of the NiMoO4/MoO3 electrode during 1000 cycles. However, other electrodes lost their stability sharply; the composite one kept its electrochemical performance during continuous cycles. 3D NiMoO4/MoO3 is a good candidate for using as active material in the structure of supercapacitor devices.

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Untitled

Cited by 13 publications

References 7 publications

Transport and magnetotransport properties of cold-pressed CrO2 powder, prepared by hydrothermal synthesis

Transport and magnetotransport properties of cold-pressed CrO2 powder, prepared by hydrothermal synthesis

Synthesis of single-domain chromium dioxide nanoparticles with high coercivity

A Unique 3D Structured NiMoO₄/MoO₃ Heterojunction for Enhanced Supercapacitor Performance

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Untitled

Cited by 13 publications

References 7 publications

Transport and magnetotransport properties of cold-pressed CrO2 powder, prepared by hydrothermal synthesis

Transport and magnetotransport properties of cold-pressed CrO2 powder, prepared by hydrothermal synthesis

Synthesis of single-domain chromium dioxide nanoparticles with high coercivity

A Unique 3D Structured NiMoO4/MoO3 Heterojunction for Enhanced Supercapacitor Performance

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Product

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A Unique 3D Structured NiMoO₄/MoO₃ Heterojunction for Enhanced Supercapacitor Performance