Capacitive behavior of Ag doped V2O5 grown by aerosol assisted chemical vapour deposition

Vernardou, Dimitra; Marathianou, I.; Katsarakis, N.; Koudoumas, E.; Kazadojev, Ivan; O’Brien, Shane; Pemble, Martyn E.; Povey, Ian M.

doi:10.1016/j.electacta.2016.02.186

Cited by 47 publications

(27 citation statements)

References 32 publications

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“…Electrochemical Performance: The electrochemical performance of the samples was studied using a three-electrode cell as reported previously [15,16], in 0.075 M, aqueous MgCl2 solution and a scan rate of 10 mV s -1 for a potential ranging -1.5 V -+1.0 V. Furthermore, cyclic voltammograms were obtained for scan rates 20 mV s -1 , 40 mV s -1 , 60 mV s -1 , 80 mV s -1 and 100 mV s -1 . Chronopotentiometric measurements were performed at specific currents of 2.4 A g -1 , 3.9 A g -1 , 4.2 A g -1 , 4.5 A g -1 , 5 A g -1 and 5.9 A g -1 for a potential range of -1.0 V --0.5 V. Electrochemical impedance spectroscopy (EIS) curves were obtained for alternating current (AC) amplitude of 5.0 mV and set potential of -1.0 V over the frequency range of 10 mHz-100 kHz.…”

Section: Methodsmentioning

confidence: 99%

Aerosol-assisted chemical vapor deposition of V2O5 cathodes with high rate capabilities for magnesium-ion batteries

Drosos

Jia

Mathew

et al. 2018

Journal of Power Sources

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The growth of orthorhombic vanadium pentoxide nanostructures was accomplished using an aerosol-assisted chemical vapor deposition process. These materials showed excellent electrochemical performance for magnesium-ion storage in an aqueous electrolyte; showing specific discharge capacities of up to 427 mAh g-1 with a capacity retention of 82 % after 2000 scans under a high specific current of 5.9 A g-1. The high rate capability suggested good structural stability and high reversibility. We believe the development of low-cost and largearea coating methods, such as the technique used herein, will be essential for the upscalable fabrication of next-generation rechargeable battery technologies.

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Section: Methodsmentioning

confidence: 99%

Aerosol-assisted chemical vapor deposition of V2O5 cathodes with high rate capabilities for magnesium-ion batteries

Drosos

Jia

Mathew

et al. 2018

Journal of Power Sources

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“…Doping with metal ions is a facile and effective way to modify the electrochemical performance of electrode materials . The introduction of metal ions may lead to crystal defects, lattice vacancies or lattice expansion in the host materials, thus improving their lithium‐ion storage properties.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Rate Performance of a Li₃VO₄ Anode through Cu Doping

Wang

et al. 2017

ChemElectroChem

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Li3VO4 (LVO), as an emerging anode material for lithium‐ion batteries (LIBs), offers distinct advantages because of its high theoretical specific capacity (590 mAh g−1), high ionic conductivity, and small volume change during lithiation/delithiation. However, the low electronic conductivity of LVO severely limits its viable application in LIBs. In this work, we doped LVO with Cu2+ ions through a simple solution reaction method, aiming to improve its electronic conductivity and electrochemical performances as a LIB anode. Among various dopant concentrations, LVO doped with 10 % Cu (LVO‐0.10Cu) showed the highest Li‐ion diffusion coefficient (2.79×10−14 cm2 s−1) and specific surface area (16.1 m2 g−1), as well as lowest charge‐transfer resistance. High reversible capacities of 440, 420, 379, and 335 mAh g−1 were achieved at current densities of 1, 2, 4, and 8 A g−1, respectively. In particular, the capacity of LVO‐0.10Cu at 8 A g−1 was twice as high as that of pristine LVO (335 vs. 168 mAh g−1). The significantly enhanced electrochemical performance of Cu‐doped LVO can be attributed to lattice expansion and improved electronic conductivity afforded by Cu‐doping.

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“…Taking this advantage into consideration, we advanced with the aerosol-assisted CVD of V 2 O 5 for different Ag loadings. In particular, vanadium bronzes of the general stoichiometry M x V 2 O 5 (M = Na, Nb, Ta, K, Cu, Ag) were investigated for their capacitive performance in terms of current density, reversibility, ion storage capacity, and cyclic stability [32]. In [64], it was shown that dopant cations enhance the structural stability of V 2 O 5 and, consequently, improve electrochemical performance.…”

Section: Electrochemical Performance Of V2o5 Based On Aqueous LI Elecmentioning

confidence: 99%

Towards High Performance Chemical Vapour Deposition V2O5 Cathodes for Batteries Employing Aqueous Media

Vernardou

Drosos²,

Kafizas

et al. 2020

Molecules

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The need for clean and efficient energy storage has become the center of attention due to the eminent global energy crisis and growing ecological concerns. A key component in this effort is the ultra-high performance battery, which will play a major role in the energy industry. To meet the demands in portable electronic devices, electric vehicles, and large-scale energy storage systems, it is necessary to prepare advanced batteries with high safety, fast charge ratios, and discharge capabilities at a low cost. Cathode materials play a significant role in determining the performance of batteries. Among the possible electrode materials is vanadium pentoxide, which will be discussed in this review, due to its low cost and high theoretical capacity. Additionally, aqueous electrolytes, which are environmentally safe, provide an alternative approach compared to organic media for safe, cost-effective, and scalable energy storage. In this review, we will reveal the industrial potential of competitive methods to grow cathodes with excellent stability and enhanced electrochemical performance in aqueous media and lay the foundation for the large-scale production of electrode materials.

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Capacitive behavior of Ag doped V2O5 grown by aerosol assisted chemical vapour deposition

Cited by 47 publications

References 32 publications

Aerosol-assisted chemical vapor deposition of V2O5 cathodes with high rate capabilities for magnesium-ion batteries

Aerosol-assisted chemical vapor deposition of V2O5 cathodes with high rate capabilities for magnesium-ion batteries

Enhancing the Rate Performance of a Li₃VO₄ Anode through Cu Doping

Towards High Performance Chemical Vapour Deposition V2O5 Cathodes for Batteries Employing Aqueous Media

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Capacitive behavior of Ag doped V2O5 grown by aerosol assisted chemical vapour deposition

Cited by 47 publications

References 32 publications

Aerosol-assisted chemical vapor deposition of V2O5 cathodes with high rate capabilities for magnesium-ion batteries

Aerosol-assisted chemical vapor deposition of V2O5 cathodes with high rate capabilities for magnesium-ion batteries

Enhancing the Rate Performance of a Li3VO4 Anode through Cu Doping

Towards High Performance Chemical Vapour Deposition V2O5 Cathodes for Batteries Employing Aqueous Media

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Enhancing the Rate Performance of a Li₃VO₄ Anode through Cu Doping