Single and Double Layer of Monoclinic VO<sub>2</sub> Ink‐Based Printed and Interdigitated Supercapacitors

Alhebshi, Nuha A.; Vaseem, Mohammad; Minyawi, Bashaer A.; Al-Amri, Amal M.; Shamim, Atif

doi:10.1002/ente.202200432

Cited by 7 publications

(8 citation statements)

References 48 publications

(60 reference statements)

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“…Figure 8 D shows that 80% of the capacitance is retained after 2000 GCD cycles at 1 mA cm −2 . In comparison, the area, energy, and power of this VO 2 //Au asymmetric supercapacitor are superior than that published for symmetric VO 2 microparticles, which are 0.2 μWh cm −2 at 17.5 μW cm −2 [ 30 ]. A maximum areal energy of 0.68 μWh cm −2 at an areal power of 95 μW cm −2 is recorded by Velmurugan et al [ 31 ] using a V 2 O 5 symmetric supercapacitor with PVA-KOH.…”

Section: Resultsmentioning

confidence: 76%

“…It is recommended to replace them by other binders in water-based solvents [ 48 ]. Another article is reported by our group [ 30 ] where a screen printer was used to print VO 2 (M) microparticle-based ink that contains nontoxic ethyl cellulose (EC) on Kapton substrate. It is worth mentioning that the single layer-printed symmetric supercapacitor revealed an areal energy of 0.2 μWh cm −2 at 17.5 μW cm −2 in a 3 M KOH aqueous electrolyte within 1.4 V.…”

Section: Introductionmentioning

confidence: 99%

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Printed Electrodes Based on Vanadium Dioxide and Gold Nanoparticles for Asymmetric Supercapacitors

Minyawi,

Vaseem,

Alhebshi

et al. 2023

Nanomaterials

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Printed energy storage components attracted attention for being incorporated into bendable electronics. In this research, a homogeneous and stable ink based on vanadium dioxide (VO2) is hydrothermally synthesized with a non-toxic solvent. The structural and morphological properties of the synthesized material are determined to be well-crystalline monoclinic-phase nanoparticles. The charge storage mechanisms and evaluations are specified for VO2 electrodes, gold (Au) electrodes, and VO2/Au electrodes using cyclic voltammetry, galvanostatic charge–discharge, and electrochemical impedance spectroscopy. The VO2 electrode shows an electrical double layer and a redox reaction in the positive and negative voltage ranges with a slightly higher areal capacitance of 9 mF cm−2. The VO2/Au electrode exhibits an areal capacitance of 16 mF cm−2, which is double that of the VO2 electrode. Due to the excellent electrical conductivity of gold, the areal capacitance 18 mF cm−2 of the Au electrode is the highest among them. Based on that, Au positive electrodes and VO2 negative electrodes are used to build an asymmetric supercapacitor. The device delivers an areal energy density of 0.45 μWh cm−2 at an areal power density of 70 μW cm−2 at 1.4 V in the aqueous electrolyte of potassium hydroxide. We provide a promising electrode candidate for cost-effective, lightweight, environmentally friendly printed supercapacitors.

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Section: Resultsmentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Printed Electrodes Based on Vanadium Dioxide and Gold Nanoparticles for Asymmetric Supercapacitors

Minyawi,

Vaseem,

Alhebshi

et al. 2023

Nanomaterials

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“…To expose the relationship between energy density and power density, the Ragone plots are diagramed in Figure 5 e and Table S2 . The V 3 O 7 SSC can yield a maximum energy density of 0.13 mWh/cm 2 at a power density of 0.42 mW/cm 2 , and retain a maximum power density of 2.55 mW/cm 2 at an energy density of 0.02 mWh/cm 2 , which precedes those of previous research about vanadium oxide-based supercapacitors, such as α-V 2 O 5 SSC (0.48 μWh/cm 2 at 0.11 mW/cm 2 ) [ 38 ], V 2 O 5 /FTO SSC (7.70 μWh/cm 2 at 0.36 mW/cm 2 ) [ 39 ], double-layer VO 2 SSC (0.80 μWh/cm 2 at 0.02 mW/cm 2 ) [ 40 ], V 2 O 5 ·H 2 O/graphene SSC (1.13 μWh/cm 2 at 0.01 mW/cm 2 ) [ 41 ], V 2 O 5 @PEDOT/graphene SSC (0.18 μWh/cm 2 at 0.01 mW/cm 2 ) [ 42 ], and MXene-TiS 2 //MWCNTs-VO 2 ASC (32.50 μWh/cm 2 at 1.20 mW/cm 2 ) [ 43 ]. Additionally, the cycling property is evaluated at a current density of 3.0 mA/cm 2 .…”

Section: Resultsmentioning

confidence: 99%

Flexible High-Performance and Screen-Printed Symmetric Supercapacitor Using Hierarchical Rodlike V3O7 Inks

et al. 2023

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The emergence of the Internet of things stimulates the pursuit of flexible and miniaturized supercapacitors. As an advanced technology, screen printing displays vigor and tremendous potential in fabricating supercapacitors, but the adoption of high-performance ink is a great challenge. Here, hierarchical V3O7 with rodlike texture was prepared via a facile template–solvothermal route; and the morphology, component, and valence bond information are characterized meticulously. Then, the screen-printed inks composed of V3O7, acetylene black, and PVDF are formulated, and the rheological behaviors are studied detailedly. Benefitting from the orderly aligned ink, the optimal screen-printed electrode can exhibit an excellent specific capacitance of 274.5 F/g at 0.3 A/g and capacitance retention of 81.9% after 5000 cycles. In addition, a flexible V3O7 symmetrical supercapacitor (SSC) is screen-printed and assembled on the Ag current collector, exhibiting a decent areal specific capacitance of 322.5 mF/cm2 at 0.5 mA/cm2, outstanding cycling stability of 90.8% even after 5000 cycles, satisfactory maximum energy density of 129.45 μWh/cm2 at a power density of 0.42 mW/cm2, and remarkable flexibility and durability. Furthermore, a single SSC enables the showing of an actual voltage of 1.70 V after charging, and no obvious self-discharge phenomenon is found, revealing the great applied value in supply power. Therefore, this work provides a facile and low-cost reference of screen-printed ink for large-scale fabrication of flexible supercapacitors.

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“…The phase transition in VO 2 can also be triggered by force, light and electricity. [4][5][6] The phase transition endows VO 2 with potential applications in spacecraft thermal radiation device, [7] supercapacitor, [8] electrode material, [9,10] optical modulator, [11] optical switch, [12] microwave passive electronic device, [13] phase change memory, [14] field reaction magnetron sputtering. 200 nm TiO 2 / 100 nm VO 2 thin films show excellent overall thermochromic properties with the T lum value of 46.29% and the ΔT sol value of 16.03%, which is consistent with the simulation results.…”

Section: Introductionmentioning

confidence: 99%

“…The phase transition in VO 2 can also be triggered by force, light and electricity. [ 4–6 ] The phase transition endows VO 2 with potential applications in spacecraft thermal radiation device, [ 7 ] supercapacitor, [ 8 ] electrode material, [ 9,10 ] optical modulator, [ 11 ] optical switch, [ 12 ] microwave passive electronic device, [ 13 ] phase change memory, [ 14 ] field effect transistor, [ 15 ] micro and nano oscillator, [ 16 ] sensor, [ 17 ] THz device, [ 18 ] and smart glass. [ 19–21 ] VO 2 thin films on glass can sense the environmental temperature, and switch the transmittance of sunlight in the infrared wavelength range at high and room temperatures, and adjust the input of solar radiation energy and indoor temperature spontaneously.…”

Section: Introductionmentioning

confidence: 99%

Design of Antireflection and Enhanced Thermochromic Properties of TiO₂/VO₂ Thin Films

Wang

Chen

et al. 2023

Adv Materials Inter

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effect transistor, [15] micro and nano oscillator, [16] sensor, [17] THz device, [18] and smart glass. [19][20][21] VO 2 thin films on glass can sense the environmental temperature, and switch the transmittance of sunlight in the infrared wavelength range at high and room temperatures, and adjust the input of solar radiation energy and indoor temperature spontaneously. Accordingly, the energy consumption in the buildings could be substantially reduced. However, there are still some obstacles to be overcome for the industrialization of VO 2 smart glass. Firstly, the phase transition temperature of VO 2 is still too high to be utilized in residence. [21] Secondly, it is difficult to achieve satisfactory luminous transmittance (T lum ) and solar modulation (ΔT sol ) at the same time. [19] Thirdly, the preparation of VO 2 thin films with good thermochromic properties is difficult: the chemical process is complex with low yield rate, while the physical methods are often carried out at high temperature. [22] A great number of strategies, such as, doping with high valence elements, [23] exerting lattice stress and strain, [24] and manufacturing oxygen vacancies, [25] and so on, have been exploited to lower the T c value. For example, the T c value can be lowered by 23 °C if VO 2 is doped with 1 at% W 6+ . [26] Mg 2+ , Ti 4+ , Sn 4+ and Zr 4+ doping can improve the T lum , but with reduced solar modulation. [27][28][29][30][31][32] Thin films prepared by colloidal lithography have the T lum value up to 70.2%, but with ΔT sol value of only 7.9%. [33] The porous thin films prepared by freeze-drying showed the better thermochromic properties with T lum of 50% and ΔT sol of 14.7%, because the filling air reduces the refractive loss. [34] However, the above methods are still complex with poor controllability. The antireflective (AR) multilayer thin films might improve the T lum of VO 2 films significantly but often degrade ΔT sol . For example, Hyun Koo et al. [35] used CeO 2 as AR film, and improved the T lum of VO 2 up to 67.5%, but with ΔT sol of only 5.4%. Liu et al. demonstrated that SnO 2 /VO 2 /SnO 2 sandwiched thin films had the T lum value of 50.2% and the ΔT sol of 15.3%. [36] However, the mechanism for the enhanced modulation by the AR films is still not well known.Herein, TiO 2 /VO 2 AR thin films are designed through optical simulations, the influences of the film stacking configuration on the T lum and ΔT sol values are discussed. Accordingly, VO 2 thin films with optimized thickness are prepared through deposition of V thin films by magnetron sputtering at room temperature and then thermal annealing in oxygen atmosphere, while TiO 2 thin films with designed thickness are prepared by VO 2 -based thin films exhibit great potential applications in thermochromic smart windows. However, it is still a challenge to synergistically achieve the high luminous transmittance (T lum ) and large solar modulation (ΔT sol ). In this paper, antireflective (AR) TiO 2 /VO 2 thin films are designed through optical simulations, and...

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Single and Double Layer of Monoclinic VO₂ Ink‐Based Printed and Interdigitated Supercapacitors

Abstract: The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/ente.202200432.

Cited by 7 publications

References 48 publications

Printed Electrodes Based on Vanadium Dioxide and Gold Nanoparticles for Asymmetric Supercapacitors

Printed Electrodes Based on Vanadium Dioxide and Gold Nanoparticles for Asymmetric Supercapacitors

Flexible High-Performance and Screen-Printed Symmetric Supercapacitor Using Hierarchical Rodlike V3O7 Inks

Design of Antireflection and Enhanced Thermochromic Properties of TiO₂/VO₂ Thin Films

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Single and Double Layer of Monoclinic VO2 Ink‐Based Printed and Interdigitated Supercapacitors

Abstract: The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/ente.202200432.

Cited by 7 publications

References 48 publications

Printed Electrodes Based on Vanadium Dioxide and Gold Nanoparticles for Asymmetric Supercapacitors

Printed Electrodes Based on Vanadium Dioxide and Gold Nanoparticles for Asymmetric Supercapacitors

Flexible High-Performance and Screen-Printed Symmetric Supercapacitor Using Hierarchical Rodlike V3O7 Inks

Design of Antireflection and Enhanced Thermochromic Properties of TiO2/VO2 Thin Films

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Single and Double Layer of Monoclinic VO₂ Ink‐Based Printed and Interdigitated Supercapacitors

Design of Antireflection and Enhanced Thermochromic Properties of TiO₂/VO₂ Thin Films