Microwave‐Assisted Synthesis of Few‐Layered TaTe<sub>2</sub> and Its Application as Supercapacitor

Chakravarty, Disha; Kumar, Praveen; Ugale, Vaishali S.; Late, Dattatray J.

doi:10.1002/ejic.201403220

Cited by 27 publications

(19 citation statements)

References 39 publications

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“…[2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] The field enhancement factor (β) depends upon the geometry of the emitter and the spatial distribution of the emitting centers. [22][23][24][25][26][27][28][29][30][31][32][33][34] Recently, intense research work has been carried out to explore the use of 2D inorganic nanomaterials as possible field emitters in view of their unique properties as compared to their bulk counterparts, such as large surface to volume ratio, high aspect ratio, possibility of facile surface functionalization, superior emission current stability of the emitter, and perfect crystallinity. This suggests that field emitter materials with elongated morphology and sharp edges/tips can have significantly enhanced FE properties in terms of reduction in the operating voltage and enhancement of the field emission current density.…”

Section: Introductionmentioning

confidence: 99%

Electrochemically Exfoliated Black Phosphorus Nanosheets – Prospective Field Emitters

Erande

Suryawanshi

et al. 2015

Eur J Inorg Chem

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Herein we report field emission (FE) investigations on an electrochemically exfoliated few-layered black phosphorus nanosheet emitter at a base pressure of approximately 1 ϫ 10 -8 mbar. The turn-on electric field required to draw an emission current density of approximately 10 μA/cm 2 is found to be about 4.2 V/μm. Furthermore, few-layered black phosphorus nanosheet emitters deliver an emission current density of about 170 μA/cm 2 at an applied field of about 7.5 V/ CSIR-

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Section: Introductionmentioning

confidence: 99%

Electrochemically Exfoliated Black Phosphorus Nanosheets – Prospective Field Emitters

Erande

Suryawanshi

et al. 2015

Eur J Inorg Chem

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“…The resultant plots show a semicircle in the high-frequency region denoting the charge-transfer resistance in the electrode/electrolyte interfaces; in the intermediate-frequency region, display of a 45° inclination in the arch represents the Warburg part, which associates with the transport of electrolyte ions in the electrodes. [70,71] These EIS spectra can be fitted by equivalent circuit (inset of Figure 7b) using Zview software, and the fitted parameters are presented This small density of Na atom in the structure has no significant effect in the charge-transfer processes. [70,71] These EIS spectra can be fitted by equivalent circuit (inset of Figure 7b) using Zview software, and the fitted parameters are presented This small density of Na atom in the structure has no significant effect in the charge-transfer processes.…”

Section: Wwwadvmatinterfacesdementioning

confidence: 99%

Vanadium Pentoxide with H₂O, K⁺, and Na⁺ Spacer between Layered Nanostructures for High‐Performance Symmetric Electrochemical Capacitors

Manikandan

Raj

Rajesh

et al. 2018

Adv Materials Inter

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batteries and the power density similar to the electric double-layer capacitors. [1][2][3][4] Generally, the transition metal oxides and conducting polymers are used as the pseudocapacitor electrode materials, [3] since it stores electric charges based on the Faradaic and non-Faradaic reactions arising at the interface of electrode/electrolyte. [5] Several transition metal oxides, metal sulfides, and metal hydroxides have been displayed to be appropriate for the electrodes of supercapacitors. [6] Mostly, transition metal oxides (e.g., RuO 2 , MnO 2 , NiO, and V 2 O 5 ) are widely utilized as the electrode material to attain pseudocapacitive energy storage property due to their multivalence oxidation states. [7] Among the various metal oxides, vanadium pentoxide (V 2 O 5 ) is reflected to be the most capable candidate for pseudocapacitor owing to its natural abundance and existence of variable oxidation states from +2 to +5 (VO, V 2 O 3 , VO 2 , and V 2 O 5 ). [8] In addition, V 2 O 5 possess a higher theoretical capacitance value of ≈2120 F g −1 under a considerable potential window of 1 V, and this is recognized to the higher oxidation state of vanadium to transfer more than one electron instantly. [9,10] So, vanadium pentoxide nanostructures have been the most regarded materials in various applications, [11] such as batteries, [12][13][14] supercapacitors, [15,16] catalyst, [17] optical switching, [18] and energy-saving devices. [19] In supercapacitors, apart from the electrical/electrochemical properties, the specific capacitance of vanadium oxide also depends upon the morphology and synthesis techniques. [20] Recently, different types of nanostructured V 2 O 5 such as nanowires, [21] nanoribbons, [22] nanorods, [23] nanoplatelets, [24] and nanobelts [25] have been applied for supercapacitor electrodes. [26] Moreover, various synthetic methods such as hydrothermal/solvothermal, thermal decomposition, chemical vapor deposition, microwave-assisted synthesis, and sol-gel [27,28] methods have been adopted for the fabrication of different forms of vanadium oxide nanostructures. Among various synthesis techniques, the hydrothermal method is a low-cost, environmentally friendly, and widely used technique for the development of inorganic nanostructures. The hydrothermal method is a scalable and simple method, retaining autoclaves at lower operational temperatures with Vanadium oxide 2D layered nanostructures with the hydrous form of potassium (K + ) and sodium (Na + ) are synthesized via hydrothermal reaction between VOSO 4 · xH 2 O and different persulfate oxidants ((NH 4 ) 2 S 2 O 8 , K 2 S 2 O 8 , and Na 2 S 2 O 8 ). The physicochemical characterization suggests that the synthesized V 2 O 5 · 3H 2 O nanostructures possess layered morphology with considerable amount of water molecules accommodated between the interlayer spacing of nanostructures. Moreover, samples obtained using K 2 S 2 O 8 and Na 2 S 2 O 8 oxidants have K + (6.41%) and Na + (0.38%) ions intercalated on the 2D nanostructure along with the water mole...

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“…The potential applications of graphene are seemingly endless. In addition to graphene, several other 2D materials exist with a single layer nature, such as MoS 2 , [4][5][6][7][8][9][10] WS 2 , [9,10] MoSe 2 , [11] WSe 2 , [11] h-BN, [12] Bi 2 Te 3 , [13] and TaTe 2 , [14] generating renewed interest in this field. These materials stack as layered crystals and may act as semiconductors, insulators, or metals.…”

Section: Introductionmentioning

confidence: 99%

Exfoliation of Bulk Inorganic Layered Materials into Nanosheets by the Rapid Quenching Method and Their Electrochemical Performance

Chakravarty

Late

2015

Eur J Inorg Chem

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We report herein the results of our investigations on the synthesis of transition-metal dichalcogenide (TMDC) semiconductor layered materials of MoS 2 , WS 2 , MoSe 2 , and WSe 2 by the rapid quenching method. The bulk powders were added to deionized water in a polypropylene tube and subsequently flushed with argon gas. Thirty rapid freezing (30 s in a liquid nitrogen bath) and heating (20 min in an oil bath at 60°C) cycles were then carried out. The reaction product was obtained in a yield in excess of 60 wt.-%, which indicates that

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Microwave‐Assisted Synthesis of Few‐Layered TaTe₂ and Its Application as Supercapacitor

Cited by 27 publications

References 39 publications

Electrochemically Exfoliated Black Phosphorus Nanosheets – Prospective Field Emitters

Electrochemically Exfoliated Black Phosphorus Nanosheets – Prospective Field Emitters

Vanadium Pentoxide with H₂O, K⁺, and Na⁺ Spacer between Layered Nanostructures for High‐Performance Symmetric Electrochemical Capacitors

Exfoliation of Bulk Inorganic Layered Materials into Nanosheets by the Rapid Quenching Method and Their Electrochemical Performance

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Microwave‐Assisted Synthesis of Few‐Layered TaTe2 and Its Application as Supercapacitor

Cited by 27 publications

References 39 publications

Electrochemically Exfoliated Black Phosphorus Nanosheets – Prospective Field Emitters

Electrochemically Exfoliated Black Phosphorus Nanosheets – Prospective Field Emitters

Vanadium Pentoxide with H2O, K+, and Na+ Spacer between Layered Nanostructures for High‐Performance Symmetric Electrochemical Capacitors

Exfoliation of Bulk Inorganic Layered Materials into Nanosheets by the Rapid Quenching Method and Their Electrochemical Performance

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Microwave‐Assisted Synthesis of Few‐Layered TaTe₂ and Its Application as Supercapacitor

Vanadium Pentoxide with H₂O, K⁺, and Na⁺ Spacer between Layered Nanostructures for High‐Performance Symmetric Electrochemical Capacitors