Li+ions diffusion coefficient in V2O5:MoO3Sol-Gel films

Cholant, Camila M.; Azevedo, Cristiane Ferraz de; Caldeira, Izabel; Balboni, Raphael D. C.; Moura, Elton A.; Westphal, Talita M.; Pawlicka, Agnieszka; Berton, Marcos Antonio Coelho; Gomez, J. A.; Avellaneda, César O.

doi:10.1080/15421406.2017.1360712

Cited by 10 publications

(3 citation statements)

References 34 publications

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“…Where ja is the anodic maximum current density at oxidation state, n is the number of electrons transferred, A is the electrode area (cm 2 ), D is the diffusion coefficient (cm 2 This value is one order of magnitude higher than the diffusion coefficient obtained for the undoped V2O5 (DLi+ = 6.1*10 −9 cm 2 /s) [10] in agreement with a more visible porosity of the doped films and of their higher electrochemical capacity. The value remains much higher than the ones recorded in the literature [45,46]. The origin of such difference is not clear but probably comes from the peculiar morphology of thick films doctor bladed from nanopowders.…”

Section: Iii21 Electrochromic Properties In Lithium Based Electrolytecontrasting

confidence: 57%

Mo addition for improved electrochromic properties of V2O5 thick films

Mjejri

Gaudon

Rougier

2019

Solar Energy Materials and Solar Cells

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Transition metal oxides (TMOs) have attracted considerable attention due to their variety of chromogenic properties. Among them, vanadium pentoxide (V2O5) has gained significant interest in respect of multichromism associated with orange, green and blue colors. Herein, we report a simple and easy method for the fabrication of Mo doped V2O5 thick films, leading to improved cyclability. Molybdenum doped vanadium pentoxide powders were synthesized from one single polyol route through the precipitation of an intermediate precursor: molybdenum doped vanadium ethyleneglycolate (Mo doped VEG). The as-synthesized Mo-doped V2O5 exhibits improved electrochromic performance in terms of capacity, cycling stability, and color contrast compared to single-component V2O5 in lithium as well as sodium based electrolyte. The improvement in EC performances lies in films of higher porosity as well as higher diffusion coefficients. To conclude, an electrochromic device combining Mo-V2O5 to WO3.2H2O, via a PMMA-lithium based electrolyte membrane exhibit simultaneously reversible color change from yellow to green for Mo-V2O5 and from blue to yellow white for WO3.2H2O with a cycling stability up to 10 000 cycles.

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Section: Iii21 Electrochromic Properties In Lithium Based Electrolytecontrasting

confidence: 57%

Mo addition for improved electrochromic properties of V2O5 thick films

Mjejri

Gaudon

Rougier

2019

Solar Energy Materials and Solar Cells

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“…[150] The analysis of the current over time gives information on the potential relaxation of the electrode process and other kinetic information, similar to a constant potential step, except that PITT is a multipoint measurement. [151] The applied potential steps are typically only a few millivolts, for example, 10 mV. [152] The extent of the reaction (e.g., phase transformation) [153] occurring at the electrode can be determined from the monitoring of the current in a certain potential range.…”

Section: Potentiostatic Intermittent Titration Technique (Pitt)mentioning

confidence: 99%

Insight on the Energy Storage Mechanism and Kinetic Dynamic of Manganese Oxide‐Based Aqueous Zinc‐Ion Batteries

Cui

Zhang

et al. 2023

Adv Materials Technologies

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Manganese oxide‐based (MO‐based) aqueous zinc ion batteries (AZIBs) are of great interest due to their high capacity, low cost, environmental friendliness, and low toxicity. However, to achieve commercialization of MO‐based AZIB, there are some issues mainly focused on cycling stability and capacity decay until now. The complexity of the energy storage mechanism and the physical and chemical properties of the MO itself are both hindering factors. Therefore, this review classifies and summarizes the energy storage mechanisms of MO‐based cathodes and hopes to guide the synthesis of MO‐based materials with excellent energy storage performance. And the kinetic assessment methods involve in the study of the MO‐based AZIB energy storage mechanism are categorized and highlighted. Moreover, the ideas of the current mechanisms mentioned are comprehensively discussed based on the advanced kinetic dynamics analyzing methods. In the last part of the review, a perspective outlook for the subsequent development and direction of MO‐based AZIB is made. This review will provide a guiding light for obtaining a high‐performance, commercially viable MO‐based AZIB.

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“…It is not unusual to find in the literature a wide spread in the reported Li diffusion coefficients for the same material. This may be partly attributed to the use of different methods, [35][36][37][38][39][40] and partly in failures to satisfy the model assumptions when performing the measurements. With this in mind, we have undertaken several methods using different assumptions to measure the chemical Li + diffusion coefficient of NaNb 13 O 33 and for comparison we also measured, under identical conditions, the Li + diffusion coefficient of the well-known, well-characterized TiNb 2 O 7 to strengthen confidence in the results.…”

Section: Lithium Chemical Diffusion Coefficientmentioning

confidence: 99%

High Conductivity and Rate Capability of NaNb₁₃O₃₃ Wadsley–Roth Phase as a Fast‐Charging Li‐Ion Anode

Allen,

Ren,

Nguyen

et al. 2023

ChemElectroChem

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The synthesis and electrochemical insertion of lithium into the Wadsley–Roth NaNb13O33 phase is studied. Lithium intercalation to form LixNaNb13O33 reaches a value of up to x~15, between 3.0 and 1.0 V vs. Li+/Li at a slow cycling rate, a capacity of 233 mAh g−1. Within this voltage window, two sharp peaks and one broad peak are observed in the differential capacity plots of lithium intercalation suggesting multiple two‐phase regions. High Li‐ion conductivity and rate capability was demonstrated. The lithium diffusion constant is about an order of magnitude greater than TiNb2O7. The average voltage is about 1.6 V and its high‐rate capability makes NaNb13O33 potentially useful as an anode in a fast‐charge Li‐ion battery application.

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Li⁺ions diffusion coefficient in V₂O₅:MoO₃Sol-Gel films

Cited by 10 publications

References 34 publications

Mo addition for improved electrochromic properties of V2O5 thick films

Mo addition for improved electrochromic properties of V2O5 thick films

Insight on the Energy Storage Mechanism and Kinetic Dynamic of Manganese Oxide‐Based Aqueous Zinc‐Ion Batteries

High Conductivity and Rate Capability of NaNb₁₃O₃₃ Wadsley–Roth Phase as a Fast‐Charging Li‐Ion Anode

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Li+ions diffusion coefficient in V2O5:MoO3Sol-Gel films

Cited by 10 publications

References 34 publications

Mo addition for improved electrochromic properties of V2O5 thick films

Mo addition for improved electrochromic properties of V2O5 thick films

Insight on the Energy Storage Mechanism and Kinetic Dynamic of Manganese Oxide‐Based Aqueous Zinc‐Ion Batteries

High Conductivity and Rate Capability of NaNb13O33 Wadsley–Roth Phase as a Fast‐Charging Li‐Ion Anode

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Product

Resources

About

Li⁺ions diffusion coefficient in V₂O₅:MoO₃Sol-Gel films

High Conductivity and Rate Capability of NaNb₁₃O₃₃ Wadsley–Roth Phase as a Fast‐Charging Li‐Ion Anode