A clean process of preparing VO as LIBs anode materials via the reduction of V2O3 powder in a H2 atmosphere: Thermodynamic assessment, isothermal kinetic analysis, and electrochemistry performance evaluation

Pei, Guishang; Xiang, Junyi; Zhong, Dapeng; Jin, Xin; Lv, Xuewei

doi:10.1016/j.jallcom.2020.156305

Cited by 8 publications

(5 citation statements)

References 34 publications

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“…See other articles for more on the principles of analysis. [32,33] Fig. 3 Heat flow vs. temperature during non-isothermal crystallization at different cooling rates.…”

Section: Non-isothermal Crystallization Kinetics Of Zn2v2o7 Glassmentioning

confidence: 99%

The phase structure, transitions, and non-isothermal crystallization kinetics of Zn₂V₂O₇ glass

Li,

Pei,

Jiao

et al. 2024

J. Phys.: Conf. Ser.

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The Zn2V2O7 glass was prepared by solid-state reaction using the initial reactant ZnO and V2O5 powder. X-ray diffraction was employed to characterize the phase composition of the as-prepared Zn2V2O7 powder. The crystallization kinetics of Zn2V2O7 glass prepared by solid-state reaction was studied using differential thermal analysis under non-isothermal conditions. It was established that the crystallization process of Zn2V2O7 can be divided into two steps, which is controlled first by a Disc-like with kinetic equation G(α)=[-ln(1-α)]1/3 and then by a Fibril-type growth type with kinetic equation G(α)=[1-(1-α)1/3]1/2 . The apparent activation energy calculated by different methods (Kissinger method, Ozawa method, Tang method, and Starink method) under non-isothermal conditions were similar, varying between 335.6 kJ·mol−1 and 371.6 kJ·mol−1, and the average apparent activation energy was equal to 362.2 kJ·mol−1.

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“…See other articles for more on the principles of analysis. [32,33] Fig. 3 Heat flow vs. temperature during non-isothermal crystallization at different cooling rates.…”

Section: Non-isothermal Crystallization Kinetics Of Zn2v2o7 Glassmentioning

confidence: 99%

The phase structure, transitions, and non-isothermal crystallization kinetics of Zn₂V₂O₇ glass

Li,

Pei,

Jiao

et al. 2024

J. Phys.: Conf. Ser.

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“…Among various oxides, vanadium monoxide (VO, in a cubic phase with a space group of Fm 3̅ m ) is accepted as one of the most promising substances in virtue of the noticeable advantages, including high electronic conductivity (10 2 Ω –1 cm –1 ) as well as low price. − More importantly, vanadium ions are electrochemically active, and their valence states can change during charging/discharging processes. , For further development and applications of VO as an electrode material, one has to solve two major detrimental issues: (1) finding a facile and green preparation method and (2) effectively alleviating the large volume change during Li + -ion intercalation/deintercalation processes. Currently, several synthetic methods have been reported to prepare VO, such as high-temperature solid-state reaction in a H 2 atmosphere ( T > 1000 °C), single-collision oxidation of vanadium metal, and high-temperature hydrothermal reaction (∼200 °C).…”

Section: Introductionmentioning

confidence: 99%

“…For example, VO powders have been reported to be prepared via the reduction of V 2 O 3 in high-purity H 2 at around 1350 °C, which delivered a capacity of 843 mA h g –1 after 30 cycles at 74.4 mA g –1. Zhang et al synthesized a composite of VO and reduced graphene oxide by a high-temperature hydrothermal reaction and found that the composite displayed 909 mA h g –1 at 74.4 mA g –1 after 30 cycles, which can be ascribed to its high surface area, porous structure, and excellent electronic conduction. In addition to the potential safety hazards of these methods, the reduction time or reductant content has to be precisely controlled.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of VO Nanorings on a Porous Carbon Architecture for High-Performance Li-Ion Batteries

Liu

et al. 2022

ACS Appl. Mater. Interfaces

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Vanadium monoxide (VO) is a promising candidate as an anode for lithium-ion batteries due to its high theoretical capacity, low cost, and considerable electronic conductivity. Unfortunately, a large volume change during electrochemical processes obstructs its practical application. In this work, a composite of VO nanorings grown on a porous carbon architecture is prepared via a topochemical self-reduction approach. When used as an anode for lithium-ion batteries, improved redox kinetics from enhanced electronic conduction and the corresponding fast lithium-ion diffusion is observed to greatly promote the electrochemical performance of lithium-ion batteries. The resulting composite delivered a reversible capacity of 336 mA h g −1 after 400 cycles at 10 A g −1 with a capacity retention of 85%, owing to the synergistic effect of VO nanorings and porous carbon in alleviating volume changes that result in a long-term cycling ability at a high current density. At 20 A g −1 , the composite anode exhibited a rate capability of 235 mA h g −1 , superior to all VO-based electrodes reported in the literature. Furthermore, a full cell was first fabricated by employing VO@C-2 as the anode and LiFePO 4 as the cathode, which exhibited a capacity of 213 mA h g −1 after 100 cycles at 0.1 A g −1 , indicating the potential of VO as an anode for practical application.

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“…Vanadium is widely utilized in high‐temperature alloys, advanced energy materials, and catalysts, owing to its special physical and chemical properties 1–4 . Most of the vanadium in the world is extracted from the vanadium titanomagnetite ore 5 .…”

Section: Introductionmentioning

confidence: 99%

“…Vanadium is widely utilized in high-temperature alloys, advanced energy materials, and catalysts, owing to its special physical and chemical properties. [1][2][3][4] Most of the vanadium in the world is extracted from the vanadium titanomagnetite ore. 5 One of the traditional and common processes for extracting vanadium from vanadium slag, which is obtained by oxidizing the hot metal bearing vanadium, is sodium salt roasting followed by water leaching. However, this traditional vanadium extraction process is not favorable anymore due to the harmful gas emission, fusion agglomeration by the liquid phase at high roasting temperatures, and high content of alkali metal in tailings and wastewater.…”

Section: Introductionmentioning

confidence: 99%

The phase structure, thermodynamic properties, and dissolution behavior of Ca₅Mg₄V₆O₂₄

et al. 2022

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A Ca5Mg4V6O24 compound was synthesized through solid‐state roasting routes under an air atmosphere, and its crystal structure and thermodynamic properties were determined using various methods. The cell parameters of Ca5Mg4V6O24 indicate that it crystallizes in cubic space group Ia3d with the unit cell parameters a = 12.442 ± 0.001 Å. X‐ray photoelectron spectroscopy also confirmed that the vanadium element in the Ca5Mg4V6O24 sample is present in the +5 state. The melting of Ca5Mg4V6O24 was detected at 1442 K. The molar heat capacity (374 J mol K−1) and entropy (688.2 J mol K−1) of Ca5Mg4V6O24 at 298.15 K were determined using physical properties measurement system, and simultaneous thermal analyzer for the first time. The solubility of Ca5Mg4V6O24 in water at different temperatures was measured and its dissolution behavior in sulfuric acid and kinetics was experimentally established.

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A clean process of preparing VO as LIBs anode materials via the reduction of V2O3 powder in a H2 atmosphere: Thermodynamic assessment, isothermal kinetic analysis, and electrochemistry performance evaluation

Cited by 8 publications

References 34 publications

The phase structure, transitions, and non-isothermal crystallization kinetics of Zn₂V₂O₇ glass

The phase structure, transitions, and non-isothermal crystallization kinetics of Zn₂V₂O₇ glass

Fabrication of VO Nanorings on a Porous Carbon Architecture for High-Performance Li-Ion Batteries

The phase structure, thermodynamic properties, and dissolution behavior of Ca₅Mg₄V₆O₂₄

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A clean process of preparing VO as LIBs anode materials via the reduction of V2O3 powder in a H2 atmosphere: Thermodynamic assessment, isothermal kinetic analysis, and electrochemistry performance evaluation

Cited by 8 publications

References 34 publications

The phase structure, transitions, and non-isothermal crystallization kinetics of Zn2V2O7 glass

The phase structure, transitions, and non-isothermal crystallization kinetics of Zn2V2O7 glass

Fabrication of VO Nanorings on a Porous Carbon Architecture for High-Performance Li-Ion Batteries

The phase structure, thermodynamic properties, and dissolution behavior of Ca5Mg4V6O24

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Product

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About

The phase structure, transitions, and non-isothermal crystallization kinetics of Zn₂V₂O₇ glass

The phase structure, transitions, and non-isothermal crystallization kinetics of Zn₂V₂O₇ glass

The phase structure, thermodynamic properties, and dissolution behavior of Ca₅Mg₄V₆O₂₄