Electrochemistry of LiV[sub 3]O[sub 8] Nanoparticles Made by Flame Spray Pyrolysis

Patey, Timothy J.; Ng, See How; Büchel, Robert; Tran, Nicolas; Krumeich, Frank; Wang, Jiazhao; Liu, Huan; Novák, P.

doi:10.1149/1.2836741

Cited by 59 publications

(33 citation statements)

References 24 publications

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“…Previously, we managed to obtain V2O5 nanoparticles by precipitation followed by heating in vacuum at 300 °C. 25,31 In addition, we also made V2O5 nanoparticles by flame spray pyrolysis (FSP) as secondary composite materials with the TiO2 and SiO2 for use in catalysis, [32][33] and even FSP-made LiV3O8 nanoparticles for lithium battery cathode materials. 34 Here, crystalline V2O5 nanoparticles have been made by FSP to explore and evaluate their electrochemical performance for use as lithium battery cathodes focusing on the cut-off potential and the rate capability.…”

Section: Introductionmentioning

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: Introductionmentioning

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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“…[13,15,[30][31][32][33][34][35] They are based on the lithium trivanadate (Li 1.1 V 3 O 8 ) active material, which offers a high theoretical capacity of 330 mA h g À1 and has been investigated as a promising positive electrode AM. [36][37][38][39] Various composite electrodes have been prepared in which the surrounding of the same Li 1.1 V 3 O 8 is changed by pre-plasticizing the poly(methylmethacrylate) (PMMA) binder with ethylene carbonate (EC) and propylene carbonate (PC). Tape casting, a fluid forming process using a volatile solvent, is used to prepare the composite electrodes.…”

Section: Introductionmentioning

confidence: 99%

A Multiscale Description of the Electronic Transport within the Hierarchical Architecture of a Composite Electrode for Lithium Batteries

Badot

Ligneel

Dubrunfaut

et al. 2009

Adv Funct Materials

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International audienceThe broadband dielectric spectroscopy technique is applied, for the first time, to a composite material used as an electrode for lithium battery. The electrical properties (permittivity and conductivity) are measured from low (a few Hz) to microwave (a few GHz) frequencies. The results demonstrate that the broadband dielectric spectroscopy technique is very sensitive to the different scales of the electrode architecture involved in electronic transport, from interatomic distances to macroscopic sizes, as well as to the morphology at these scales, coarse or fine distribution of the constituents. This work opens up new prospects for a more fundamental understanding and more rational optimization of the electronic transport in composite electrodes for lithium batteries and other electrochemical energy storage technologies (including other batteries, supercapacitors, low- and medium-temperature fuel cells), electrochemical sensors and conductor-insulator composite materials

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“…Our group has recently introduced flame spray pyrolysis (FSP) as a route to producing LiV 3 O 8 [12] and LiMn 2 O 4 nanoparticles [10] for use in lithium-ion batteries. Carbon-coated nanoparticles have been made by single flame combustion of SiCl 4 and acetylene [13] or hexamethyledisiloxane and H 2 [14] at production rates up to 700 g h −1 .…”

Section: Introductionmentioning

confidence: 99%