Spray pyrolysed titanium oxide thin films using different ingredients for supercapacitive charaterizations

Fugare, B. Y.; Lokhande, B. J.

doi:10.1007/s10854-016-4493-6

Cited by 10 publications

(10 citation statements)

References 38 publications

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“…During this process, electrons are lost by Cr as the oxidation state changes from + 3 to + 6. Cr(SO 4 ) 3 dissociates in aqueous electrolyte soon and forms Cr 6+ and SO 4 2− species. When negative sweep potential is given to HFE, the dedoping of PPy matrix occurs and SO 4 2− anions are separated from PPy matrix.…”

Section: Cyclic Voltammetric Analysesmentioning

confidence: 99%

“…Cr(SO 4 ) 3 dissociates in aqueous electrolyte soon and forms Cr 6+ and SO 4 2− species. When negative sweep potential is given to HFE, the dedoping of PPy matrix occurs and SO 4 2− anions are separated from PPy matrix. The Cr 6+ species gain three electrons and react with OH -ions in the PPy matrix to form Cr(OH) 3 .…”

Section: Cyclic Voltammetric Analysesmentioning

confidence: 99%

“…The Cr 6+ species gain three electrons and react with OH -ions in the PPy matrix to form Cr(OH) 3 . Thus, the redox transitions of Cr during positive or negative sweep of potentials as well as intercalations and de-intercalations of SO 4 2− anions in the matrix of HFE (i.e., doping and dedoping of PPy matrix) are responsible for the pseudocapacitive charge storage. Hence, in present case, the pseudocapacitance depends only on the rate of dissociation of electrolytes and the pH of the electrolytes.…”

Section: Cyclic Voltammetric Analysesmentioning

confidence: 99%

“…Metal oxides [1][2][3][4][5], sulfides [6][7][8][9][10], conducting polymers [11], carbonaceous materials, etc., have been used till today. Conducting polymers have grabbed more attention.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and electrolytic cation-dependent cyclic voltammetric study of SILAR deposited PPy-Cr2O3 in equimolar aqueous solutions of H2SO4, Na2SO4, and K2SO4

Thakur

Lokhande

2018

Mater Renew Sustain Energy

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PPy-Cr 2 O 3 hybrid flexible electrodes (HFEs) have been synthesized by successive ionic layer adsorption and reaction (SILAR) method using flexible aluminum (Al) strips (derived from cold drink cans) as substrates. For the synthesis, 0.1 M pyrrole and 0.02 M K 2 Cr 2 O 7 dissolved in 0.5 M aqueous H 2 SO 4 were used as precursors while the flexible aluminum strips derived from waste cold drink cans were used as substrates. XRD pattern shows the peak at 50.48• indicating the existence of rhombohedral Cr 2 O 3 in the hybrid. FTIR spectrum corroborates the formation of hybrid. SEM image exhibits porous morphology with interconnected granules. TEM image depicts the Cr 2 O 3 granules of average size 20 nm and PPy globules of average size 50 nm. The liquid-solid contact angle was found to be 10• 30′ indicating the near-superhydrophilic nature of HFE. Cyclic voltammetric (CV) analyses of HFEs have been carried out in each of 20 ml, 0.5 M solutions H 2 SO 4 , Na 2 SO 4 , and K 2 SO 4 . Changes in potential window, redox behavior and hence, the specific capacitance have been observed. The pseudocapacitance of HFE is combined effect of doping-dedoping of PPy matrix with SO 4 2− anions as well as redox reaction shown by Cr 2 O 3 . HFE shows maximum specific capacitance 4246 Fg −1 in K 2 SO 4 as measured from CV. HFE shows appreciable stability with 58.20% retention in capacitance even after 1000 cycles.

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Section: Cyclic Voltammetric Analysesmentioning

confidence: 99%

Section: Cyclic Voltammetric Analysesmentioning

confidence: 99%

Section: Cyclic Voltammetric Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis and electrolytic cation-dependent cyclic voltammetric study of SILAR deposited PPy-Cr2O3 in equimolar aqueous solutions of H2SO4, Na2SO4, and K2SO4

Thakur

Lokhande

2018

Mater Renew Sustain Energy

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“…RuO 2 is the most preferable electrode material for supercapacitor because of its high specific capacitance, excellent reversibility, and long cycle life. However, high cost, less abundance, and toxic nature have limited the commercial use of RuO 2 . Hence, there is a strong incentive to find alternative electrode materials, which are inexpensive and exhibit pseudocapacitance similar to that of hydrous amorphous RuO 2 .…”

Section: Introductionmentioning

confidence: 99%

Cyclic Voltammetric Study of CuO Thin Film Electrodes Prepared by Automatic Spray Pyrolysis

Kambale

Jadhav

Kore

et al. 2019

Macromolecular Symposia

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This work deals with the study of effect of scan rate on the cyclic voltammetric performance of cupric oxide (CuO) electrodes prepared using automatic spray pyrolysis. For the synthesis via aqueous route, 50 mL of 1 m Cu(NO3)2·3H2O was used as a precursor solution and stainless steel (SS) plates were used as a conducting substrates. The spray rate was maintained at 2.5 mL min–1, decomposition temperature was kept at 673.15 K. In the analysis, XRD patterns clearly substantiate the formation of CuO on SS. Cyclic voltammetric analysis of the prepared electrodes has been carried out in 1 m KOH at various scan rates from 2 to 100 mV s–1. In CV study, electrode shows decrease in specific capacitance (SC) values with increase in scan rates indicating reversible nature. The achieved highest value of the SC is 58.2 F g–1.

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Recent Progress in Ruthenium Oxide‐Based Composites for Supercapacitor Applications

Majumdar¹,

Maiyalagan

Jiang³

2019

ChemElectroChem

253

147

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Electrochemical energy storage has emerged as one of the principal topics of present‐day research to deal with the high energy demands of modern society. Accordingly, besides fuel cells and battery technologies, interesting and challenging results have been observed in the recent past, during the materialization of “supercapacitors” or “ultracapacitors”, which have provoked a sharp increase in research inclination to revisit this aspect of renewable and sustainable energy storage. Supercapacitor performances are largely dependent on electrode materials, the nature of the electrolyte used, and the range of voltage windows employed. Carbon‐based electrode materials have tunable properties such as electrical conductivity, extensive surface area, and faster electron transfer kinetics with low fabrication costs. But their specific capacitances are found to be too low for commercialization. Ruthenium dioxide (RuO2), owing to its high theoretical specific capacitance value (1400–2000 F g−1), has been extensively recognized as a favorable material for supercapacitor devices, but high production cost and agglomeration effects stand as high barriers preventing marketable usage. Consequently, RuO2‐based nanocomposites have been widely studied to optimize the material cost, with simultaneous improvement in the electrochemical performances. This Review describes comprehensively the recent progress in terms of the fabrication and design, electrochemical performance, and achievements of RuO2 and its nanocomposites as electrode materials for supercapacitors, which will be beneficial for further research designing high‐performance supercapacitor devices.

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Spray pyrolysed titanium oxide thin films using different ingredients for supercapacitive charaterizations

Cited by 10 publications

References 38 publications

Synthesis and electrolytic cation-dependent cyclic voltammetric study of SILAR deposited PPy-Cr2O3 in equimolar aqueous solutions of H2SO4, Na2SO4, and K2SO4

Synthesis and electrolytic cation-dependent cyclic voltammetric study of SILAR deposited PPy-Cr2O3 in equimolar aqueous solutions of H2SO4, Na2SO4, and K2SO4

Cyclic Voltammetric Study of CuO Thin Film Electrodes Prepared by Automatic Spray Pyrolysis

Recent Progress in Ruthenium Oxide‐Based Composites for Supercapacitor Applications

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