ChemInform Abstract: Electrochemical Insertion of Magnesium into Hydrated Vanadium Bronzes.

Novák, P.; Scheifele, Werner; Joho, Felix; Haas, O.

doi:10.1002/chin.199547021

Cited by 15 publications

(22 citation statements)

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“…35 Here the precursor solution is prepared by first dissolving vanadium(V) oxytripropoxide (Aldrich, 98%) into 30 mL of diethylene glycol (DEG, Fluka). This solution was then stirred into 30 mL of toluene …”

Section: Materials Synthesismentioning

confidence: 99%

Flame spray-pyrolyzed vanadium oxide nanoparticles for lithium battery cathodes

Patey

Büchel

et al. 2009

Phys. Chem. Chem. Phys.

116

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Vanadium pentoxide (V2O5) nanoparticles (30-60 nm) were made by a one-step and scalable flame spray pyrolysis (FSP) process. Optimization of the FSP processing conditions (precursor concentration and injection rate) enhanced the electrochemical performance of these nanoparticles. Increasing the cut-off potential for discharging from 1.5 to 2.5 V vs. Li/Li + improved the cycle life of these V2O5 nanoparticles. Particles with the lowest specific surface area ( 32 m 2 g −1 ) and highest phase purity (up to 98 wt%) showed excellent cyclability between 2.5 and 4.0 V vs. Li/Li + , retaining a specific charge of 110 mAh g −1 beyond 100 cycles at a specific current of 100 mA g −1 , and also superior specific charge of 100 mAh g −1 at specific current up to 20C rate (or 2000 mA g −1 ).

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Section: Materials Synthesismentioning

confidence: 99%

Flame spray-pyrolyzed vanadium oxide nanoparticles for lithium battery cathodes

Patey

Büchel

et al. 2009

Phys. Chem. Chem. Phys.

116

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“…18 Later, the intercalation of lithium and sodium was studied using the hydrate form of sodium vanadium oxide (lamellar structure), and it was found that the presence of water does not hinder lithium accommodation and, in fact, the initial reversible capacity even can be higher in the presence of water. 19 Electrochemical insertion of Mg 2+ into vanadium bronzes was firstly reported by Novák et al 20 It has been found that water molecules can stabilize Mg 2+ ion in insertion compounds of V 2 O 5 and vanadium bronzes and, consequently, water content in electrolyte solution is a critical aspect. 9,6,20 The optimization of the electrolyte solution is a key aspect of the batteries, particularly magnesium batteries.…”

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confidence: 95%

“…9,6,20 The optimization of the electrolyte solution is a key aspect of the batteries, particularly magnesium batteries. The main difficulty is that the electrolytes supporting the reversible electrodeposition of Mg usually are not stable at the high voltage exhibited by the positive electrode.…”

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confidence: 99%

Nanobelts of Beta-Sodium Vanadate as Electrode for Magnesium and Dual Magnesium-Sodium Batteries

Cabello

Nacimiento

Alcántara

et al. 2016

J. Electrochem. Soc.

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Nanoparticles of sodium vanadate (composition approximately NaV 6 O 15 ) with nanobelt morphology and monoclinic structure (β-phase) were prepared by using the hydrothermal method, α-V 2 O 5 as vanadium source and sodium dodecyl sulfate as both surfactant and source of sodium. This material can reversibly accommodate lithium, sodium and magnesium in its framework. Sodium vanadate nanobelts exhibit lower capacity than V 2 O 5 in lithium and sodium cell. In sodium cell, the electrochemical performance with NaOTfdiglyme electrolyte solution was much better than with NaClO 4 -propylene carbonate solution. In the case of dual sodium-magnesium electrolyte, the presence of sodium in β-NaV 6 O 15 and the small particle size improve the electrochemical behavior and increase the capacity (125 mAh g −1 ) in comparison with α-V 2 O 5 (10 mAh g −1 ). The electrolyte solution based on Mg(BH 4 ) 2 and NaBH 4 dissolved in diglyme is compatible with Mg metal and yields to better electrochemical performance than magnesium perchlorate dissolved in acetonitrile. Both sodium and magnesium are reversibly intercalated at the positive electrode and electrodeposited at the negative electrode and, consequently, it can be described as a dual battery. On the other hand, a veritable magnesium-ion battery was made using Irrespective of the successful commercialization of lithium ion batteries since 1990's, it is necessary to develop new batteries based on other elements such as sodium and magnesium. Taking into account its significance to clean energy and its supply risk, it results that nowadays lithium is a near-critical mineral resource. In addition, Mg would be a better negative electrode for reasons such as its natural abundance, high volumetric capacity and no formation of dendrites upon electrochemical cycling.1-3 This alkaline-earth element can be particularly useful for stationary applications batteries. However, the effective use of Mg still needs for further improvement of the electrolyte solution. On the other hand, the diffusion of magnesium into host materials is slow, and the intercalation reactions of magnesium are not well understood.Some of the most relevant electrode materials for the forthcoming post-lithium era are vanadium oxides. Besides the chemical composition and the lattice structure, the particle size and morphology can affect to the electrochemical behavior and, thus, materials with very small particle size can be better electrodes in terms of intercalation capacity. 3,8 Intercalation of magnesium into large particles of V 2 O 5 is a slow process, but decreasing the * Electrochemical Society Member.z E-mail: iq2alror@uco.es particle size can improve the capacity. 9,10 Aurbach's group reported V 2 O 5 thin-film electrodes that can be cycled over a potential range of 2.2−3.0 V vs. Mg with a specific capacity of 150 mAh g −1 .11 Sa et al., using bilayered V 2 O 5 · nH 2 O xerogel obtained a reversible capacity of about 50 mAh g −1 in the voltage region between ca. 0.1 and 3.0 V vs. Mg, and they found that Mg inserti...

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“…A magnesium-ion rechargeable battery might be very attractive, too. For instance, some authors reported that vanadium bronzes [5,6], graphite fluorides [7] and transition metals oxides [6,8,9] may intercalate magnesium, and thus they may be considered as electrode materials for secondary Mg--ion batteries. However, on the present level of knowledge, such a type of battery suffers of two unresolved problems, the first one being the passivation of metallic magnesium if used as anode in commonly used organic electrolytes, and the second one being low capacity utilization during the Mg-intercalation process [10,11].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Behaviour of V₂O₅Xerogel and V₂O₅Xerogel/C Composite in an Aqueous LiNO₃and Mg(NO₃)₂Solutions

et al. 2010

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We synthesized both the V 2 O 5 xerogel and the composite V 2 O 5 xerogel/C starting from the solution of V 2 O 5 in hydrogen peroxide. After the characterization by XRD, thermal (TGA-DTA), SEM methods and by particle size analysis, the investigation of Li + and Mg 2+ intercalation/deintercalation reactions in an aqueous solutions of LiNO 3 and Mg(NO 3 ) 2 were performed by cyclic voltammetry. The composite material V 2 O 5 xerogel/C displayed relatively high intercalation capacity, amounting to 123 mA h g −1 and 107 mA h g −1 , in lithium and magnesium salt solutions, respectively.

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ChemInform Abstract: Electrochemical Insertion of Magnesium into Hydrated Vanadium Bronzes.

Cited by 15 publications

References 1 publication

Flame spray-pyrolyzed vanadium oxide nanoparticles for lithium battery cathodes

Flame spray-pyrolyzed vanadium oxide nanoparticles for lithium battery cathodes

Nanobelts of Beta-Sodium Vanadate as Electrode for Magnesium and Dual Magnesium-Sodium Batteries

Electrochemical Behaviour of V₂O₅Xerogel and V₂O₅Xerogel/C Composite in an Aqueous LiNO₃and Mg(NO₃)₂Solutions

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ChemInform Abstract: Electrochemical Insertion of Magnesium into Hydrated Vanadium Bronzes.

Cited by 15 publications

References 1 publication

Flame spray-pyrolyzed vanadium oxide nanoparticles for lithium battery cathodes

Flame spray-pyrolyzed vanadium oxide nanoparticles for lithium battery cathodes

Nanobelts of Beta-Sodium Vanadate as Electrode for Magnesium and Dual Magnesium-Sodium Batteries

Electrochemical Behaviour of V2O5Xerogel and V2O5Xerogel/C Composite in an Aqueous LiNO3and Mg(NO3)2Solutions

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Electrochemical Behaviour of V₂O₅Xerogel and V₂O₅Xerogel/C Composite in an Aqueous LiNO₃and Mg(NO₃)₂Solutions