V2O5 xerogel electrodes with much enhanced lithium-ion intercalation properties with N2 annealing

Liu, Dawei; Liu, Yanyi; García, Betzaida Batalla; Zhang, Zuo‐Feng; Pan, Anqiang; Jeong, Yoon‐Ha; Cao, Guozhong

doi:10.1039/b914436f

Cited by 120 publications

(91 citation statements)

References 40 publications

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“…corroborates the shifted peak positions in the XRD patterns and also explains the formation of parasitic secondary-phase LiV 2 O 5 . The presence of tetravalent vanadium ions is known to be beneficial to lithium ion intercalation [19] as it enhances the electronic conductivity, as electrons may hop between pentavalent and tetravalent vanadium ions, and increases the void space favoring the lithium ion diffusion, through generating oxygen vacancies to maintain the electroneutrality. Tetravalent vanadium ions and oxygen vacancies on the surface would affect the surface chemistry and the surface energy and thus may promote the intercalation and deintercalation reactions and the accompanied first-order phase transition.…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

“…Liu et al [19,20] found that the presence of defects, such as V 4? , and associated oxygen vacancies could also improve the cycle life of LVO.…”

Section: Introductionmentioning

confidence: 98%

“…In addition to design and synthesis of nanostructures, carbon nanocoating and doping, the introduction of surface defects through controlled annealing in reducing gas is yet another approach to improve the lithium ion intercalation properties [17][18][19][20]. Liu et al [19,20] found that the presence of defects, such as V 4?…”

Section: Introductionmentioning

confidence: 99%

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The effect of nitrogen annealing on lithium ion intercalation in nickel-doped lithium trivanadate

et al. 2016

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Section: Electrochemical Characterizationmentioning

confidence: 99%

“…Liu et al [19,20] found that the presence of defects, such as V 4? , and associated oxygen vacancies could also improve the cycle life of LVO.…”

Section: Introductionmentioning

confidence: 98%

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The effect of nitrogen annealing on lithium ion intercalation in nickel-doped lithium trivanadate

et al. 2016

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“…A great number of strategies have been proposed to develop nanoelectrodes including the self-assembled nanostructures [4], hierarchical 3D mixed conducting networks [5], self-supported nanoarrays with diverse morphologies on 2D/3D conductive substrates as binder-free electrodes [6], 2D nanostructures through dissolution-splitting method from their bulk crystal [7], ultrasonic treatment of powders [8], nanocomposites composed of graphene or carbon with actives [9][10][11], introduction of surface defects by gas annealing [12], and doping by metallic species [13,14]. Nevertheless, in some cases, the nanostructured electrodes require complicated fabrication approaches and present poor mechanical stability along with limited rate capability.…”

Section: Introductionmentioning

confidence: 99%

Electrodeposition of Vanadium Oxides at Room Temperature as Cathodes in Lithium-Ion Batteries

Rasoulis

Vernardou

2017

Coatings

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Electrodeposition of vanadium pentoxide coatings was performed at room temperature and a short growth period of 15 min based on an alkaline solution of methanol and vanadyl (III) acetyl acetonate. All samples were characterized by X-ray diffraction, Raman spectroscopy, field-emission scanning electron microscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. The current density and electrolyte concentration were found to affect the characteristics of the as-grown coatings presenting enhanced crystallinity and porous structure at the highest values employed in both cases. The as-grown vanadium pentoxide at current density of 1.3 mA·cm −2 and electrolyte concentration of 0.5 M indicated the easiest charge transfer of Li + across the vanadium pentoxide/electrolyte interface presenting a specific discharge capacity of 417 mAh·g −1 , excellent capacitance retention of 95%, and coulombic efficiency of 94% after 1000 continuous Li + intercalation/deintercalation scans. One may then suggest that this route is promising to prepare large area vanadium pentoxide electrodes with excellent stability and efficiency at very mild conditions.

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“…The improved crystallinity can reduce the charge transfer resistance during ions intercalation/ de-intercalation. [6] SEM micrographs of NiO thin film shown in Figure 2a. The SEM micrograph reveals uniform and smooth surface without any clear crystal grain structure.…”

Section: Methodsmentioning

confidence: 99%

Electrochromic Performance of Nickel Oxide Thin Film: Synthesis via Electrodeposition Technique

Kondalkar

Patil

Mane

et al. 2016

Macromolecular Symposia

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Summary: Nanocrystalline Nickel oxide (NiO) thin films were electrochemically deposited onto ITO substrate at room temperature. In order to examine the optical absorption, crystal structure and surface morphology of deposited NiO thin films were characterized by means of UV-vis spectrophotometer, X-ray diffraction (XRD) and scanning electron microscopy (SEM). The electrochromic (EC) performance of NiO thin film was investigated by means of cyclic voltammetry (CV), chronoamperometry (CA) and chronocoulometry (CC). The switching response of NiO thin film is found to be 5.62 s for coloration (t c ) and 4.31 sec for bleaching (t b ) with excellent reversibility. The electrochromic study shows highly reversible and the stable nature of electrochemically deposited NiO thin films which provides a versatile and promising application towards the fabrication of smart windows.

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V2O5 xerogel electrodes with much enhanced lithium-ion intercalation properties with N2 annealing

Cited by 120 publications

References 40 publications

The effect of nitrogen annealing on lithium ion intercalation in nickel-doped lithium trivanadate

The effect of nitrogen annealing on lithium ion intercalation in nickel-doped lithium trivanadate

Electrodeposition of Vanadium Oxides at Room Temperature as Cathodes in Lithium-Ion Batteries

Electrochromic Performance of Nickel Oxide Thin Film: Synthesis via Electrodeposition Technique

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