The growth mechanism and supercapacitor study of anodically deposited amorphous ruthenium oxide films

Patake, V.D.; Pawar, S.M.; Shinde, V.R.; Gujar, T.P.; Lokhande, C.D.

doi:10.1016/j.cap.2009.05.003

Cited by 40 publications

(16 citation statements)

References 25 publications

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“…A large breakthrough of preparation method was reported, using hydrothermal method to prepare RuO 2 xH 2 O. Sol-gel [11], Anodic deposition [12] and Electrophoretic deposition [13] can also obtain higher C S of RuO 2 . Most recently, a C S of a RuO 2 ·xH 2 O, from the anodic deposition onto stainless steel, reached 1190 F/g [14], which is so far the highest C S in literature.…”

Section: Introductionmentioning

confidence: 97%

Thermal Decomposion Synthesis of Binary Ru-Sn Oxides and their Specific Capacitance

Wang

Tang

2011

Integrated Ferroelectrics

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Some binary RuO 2 -SnO 2 oxides coated on Ti were synthesed by the thermal decoposion method. A remarkable behaviour of pseudo-capacitance has been shown on the cyclic voltmmograms of the prepared samples. It is concluded that the poor specific capacitance has been found for both RuO 2 -enriched and SnO 2 -enriched binary oxides. The maximum specific capacitance occurs at the composition of 40 mol% SnO 2 and reaches the value of 1080Fg −1 when this electrode was annealed at the temperature of 260 • C. The addition of Sn into the binary oxide coating can help improve the electrode capacitancee and do no harm to the electro-catalytic properties.

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Section: Introductionmentioning

confidence: 97%

Thermal Decomposion Synthesis of Binary Ru-Sn Oxides and their Specific Capacitance

Wang

Tang

2011

Integrated Ferroelectrics

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“…A most successful electrode material is composed with RuO 2 due to the minimal energy requirements and oxide stability during proton diffusion into the crystal structure [4]. The highest capacitance of RuO 2 was reported of 380 F/g in the case of crystalline RuO 2 and 760 F/g in the case of hydrous RuO 2 with the bulk form [6]. Although pseudocapacitor has higher capacity than EDLC, there are many disadvantages such as high raw material cost and process difficulty which limits its practical application.…”

Section: Introductionmentioning

confidence: 97%

“… ) also are composed of crystalline RuO 2 and amorphous tantalum oxide [6]. So a fact can be concluded that a high capacitance must have an amorphous structure.…”

Section: Fgruomentioning

confidence: 99%

“…EDLC is a small part of whole capacitance, on the other hand pseudocapacitance is a large part of it. The EDLC occurs in porous active carbon/fiber with very high specific surface area [3], whereas the pseudocapacitance is observed in transition metal oxides [4,5] (RuO 2 [4][5][6][7][8][9][10], IrO 2 , MnO 2 [10][11][12][13][14], Co 3 O 4 [15][16][17], NiO [18,19], SnO 2 [9] etc.) and conducting polymers [5].…”

Section: Introductionmentioning

confidence: 99%

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Poorly Crystalline Ru0.4Sn0.6O2 Nanocomposites Coated on Ti Substrate with High Pseudocapacitance for Electrochemical Supercapacitors

Shao¹,

Lu²,

Deng³

et al. 2012

ACES

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Poorly crystalline Ru 0.4 Sn 0.6 O 2 solid solution with size about 2 nm coated on Ti substrate was prepared by thermal decomposition at 260˚C. The electrodes were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) for structural and morphological studies. The Capacitance properties of the electrodes were tested by cyclic voltammetry and charge-discharge tests. The results show that the electrodes have mud-cracks structure with cracks 0.2 µm in width. The electrode has stable electrochemical capacitor properties with a maximum specific capacitance of 648 F/g within a scan potential window -0.1 -1.0 V in 0.5 M H 2 SO 4 electrolyte solution.

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“…[1][2][3] However, due to high cost and environmental concerns, manganese oxide, which has a high theoretical capacitance of 1370 Fg À1 , has been preferred. 4 Many attempts have therefore been made to synthesize manganese oxides through a host of techniques such as combined sonochemical and solvothermal, 5 chemical precipitation, 6 sol-gel processes, 7 mechanical milling processes, 8 electrodeposition 9 and hydrothermal synthesis.…”

Section: Introductionmentioning

confidence: 99%

In situ engineering of urchin-like reduced graphene oxide–Mn₂O₃–Mn₃O₄nanostructures for supercapacitors

et al. 2014

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We report the use of a spray pyrolysis method to synthesize high surface area (BET surface area of 139 m2 g-1) self-organized, micron sized urchin-like composites made up of reduced graphene oxide and needleshaped manganese oxide (rGO-Mn2O3-Mn 3O4). Maximum capacitances of 425 Fg-1 at 5 mV s-1 from a three electrode set up and 133 Fg-1 at a current density of 0.2 Ag-1 were recorded using an asymmetric two electrode set up with graphene as the anode. The composite material also showed a capacitance retention of 83% over 1000 cycles. We attribute this remarkable performance to the high specific surface area due to the urchin-like hollow structures and synergy between the manganese oxide and reduced graphene oxide materials within the composite. Furthermore, this synthesis technique can be exploited further in the bulk synthesis of cost effective graphene-metal oxide hybrid materials for energy storage applications. were recorded using an asymmetric two electrode set up with graphene as the anode. The composite material also showed a capacitance retention of 83% over 1000 cycles. We attribute this remarkable performance to the high specific surface area due to the urchin-like hollow structures and synergy between the manganese oxide and reduced graphene oxide materials within the composite. Furthermore, this synthesis technique can be exploited further in the bulk synthesis of cost effective graphene-metal oxide hybrid materials for energy storage applications.

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The growth mechanism and supercapacitor study of anodically deposited amorphous ruthenium oxide films

Cited by 40 publications

References 25 publications

Thermal Decomposion Synthesis of Binary Ru-Sn Oxides and their Specific Capacitance

Thermal Decomposion Synthesis of Binary Ru-Sn Oxides and their Specific Capacitance

Poorly Crystalline Ru<sub>0.4</sub>Sn<sub>0.6</sub>O<sub>2</sub> Nanocomposites Coated on Ti Substrate with High Pseudocapacitance for Electrochemical Supercapacitors

In situ engineering of urchin-like reduced graphene oxide–Mn₂O₃–Mn₃O₄nanostructures for supercapacitors

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The growth mechanism and supercapacitor study of anodically deposited amorphous ruthenium oxide films

Cited by 40 publications

References 25 publications

Thermal Decomposion Synthesis of Binary Ru-Sn Oxides and their Specific Capacitance

Thermal Decomposion Synthesis of Binary Ru-Sn Oxides and their Specific Capacitance

Poorly Crystalline Ru&lt;sub&gt;0.4&lt;/sub&gt;Sn&lt;sub&gt;0.6&lt;/sub&gt;O&lt;sub&gt;2&lt;/sub&gt; Nanocomposites Coated on Ti Substrate with High Pseudocapacitance for Electrochemical Supercapacitors

In situ engineering of urchin-like reduced graphene oxide–Mn2O3–Mn3O4nanostructures for supercapacitors

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Product

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Poorly Crystalline Ru<sub>0.4</sub>Sn<sub>0.6</sub>O<sub>2</sub> Nanocomposites Coated on Ti Substrate with High Pseudocapacitance for Electrochemical Supercapacitors

In situ engineering of urchin-like reduced graphene oxide–Mn₂O₃–Mn₃O₄nanostructures for supercapacitors