Electrochemical investigations of spray pyrolysed ruthenium incorporated Co3O4 electrodes prepared via aqueous route

Ambare, R.C.; Khavale, S. V.; Nakate, Umesh T.; Khanvilkar, M.B.; Lokhande, B. J.

doi:10.1016/j.colsurfa.2021.126215

Cited by 29 publications

(10 citation statements)

References 39 publications

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“…In addition, the lower thickness of thin films offers a high surface-to-volume ratio . Different thin film deposition techniques have been utilized to deposit the Mn 3 O 4 thin films including sputtering, electrodeposition, successive ionic layer adsorption and reaction (SILAR), spray pyrolysis, − etc. Among these, spray pyrolysis is one of the versatile techniques where the thin films are synthesized by the pyrolytic decomposition of the metal salt precursor on the hot substrate …”

Section: Introductionmentioning

confidence: 99%

Elucidating the Role of Copper-Induced Mixed Phases on the Electrochemical Performance of Mn-Based Thin-Film Electrodes

Adoor,

Hegde,

Bhat

et al. 2023

ACS Omega

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Manganese oxide is a fascinating material for use as a thin-film electrode in supercapacitors. Herein, the consequences of copper incorporation on spray pyrolyzed manganese oxide thin films and their electrochemical performance were investigated. The Cu-incorporated manganese oxide thin films were deposited by spray pyrolysis, and their structural and electrochemical properties were thoroughly evaluated. The formation of the spinel Mn 3 O 4 phase with effective Cu incorporation was confirmed by X-ray diffraction investigation. Through Raman studies, it was noticed that mixed phases of manganese oxide tend to form after Cu incorporation, and this result was also reflected in X-ray photoelectron spectroscopic studies. The surface morphology and roughness were also altered by the addition of copper. However, electrochemical measurements implied a reduction in the specific capacitance upon copper inclusion. The cyclic voltammetry test indicated a specific capacitance of 132 F/g for Mn 3 O 4 electrodes, but a substantial drop for copper-incorporated samples due to the mixed manganese phase. The decremental tendency was further supported by galvanostatic charge–discharge studies and electrochemical impedance spectroscopic measurements. These results provide valuable insights into the effects of copper addition in manganese oxide thin-film-based electrodes for energy storage applications.

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Section: Introductionmentioning

confidence: 99%

Elucidating the Role of Copper-Induced Mixed Phases on the Electrochemical Performance of Mn-Based Thin-Film Electrodes

Adoor,

Hegde,

Bhat

et al. 2023

ACS Omega

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“…The major problem in using ruthenium (Ru) oxides as electrode material is its cost. Hence the attempts are made to minimize the use of Ru as a dopants or to make composites to achieve higher specific capacitance and high structural and electrochemical stability [28][29][30][31][32][33][34][35][36]. Hence in order to improve the structural stability and electrochemical performance of the PPy, addition of oxides of ruthenium could worth a shot to attempt.…”

Section: Introductionmentioning

confidence: 99%

Structural and electrochemical study of hybrid flexible electrodes containing in-situ growth of RuO2 within PPy matrix controlled by RuCl3 % consumed during SILAR synthesis for preparation of symmetric device

Thakur¹,

Pathan²,

Lokhande³

2022

ES Energy Environ.

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Pristine Polypyrrole (PPy) suffers from poor structural stability and comparatively less electrochemical durability. Ruthenium oxide has been known to provide the good structural and electrochemical stability and durable performance. Present work concentrates on the impact of addition of RuCl3 during the SILAR synthesis on the specific capacitance (SC), cycling stability and the structural stability of the ruthenium oxide (RuO2) incorporated PPy hybrid flexible electrodes (HFEs). The synthesis has been carried out by using the simple successive ionic layer adsorption and reaction (SILAR) technique using stainless steel strips as flexible substrates, 0.1M pyrrole as monomer blended with different percentages of ruthenium tri chloride (RuCl3) and 30 wt % of hydrogen peroxide (H2O2) as oxidizer and oxidative polymerizing agent. The prepared HFEs were electrochemically analyzed by cyclic voltammetry (CV), galvanostatic charge discharge (GCD) and electrochemical impedance spectroscopy (EIS). The electrodes exhibit slight variation in surface morphology as the interconnected granules become small and get closely attached and then the surface is occupied with the interconnected spheres coated with PPy matrix. The observed maximum SC was found to be 1321.67 Fg -1 at 5mVs -1 in 0.2M sodium sulphate (Na2SO4). The HFE prepared with optimum concentration of ruthenium chloride (RuCl3) exhibit 86% retention of SC even after 5000 cycles. A symmetric device has been fabricated using the optimized electrodes which has SC of 71.5 Fg -1 at 18.18 Ag -1 . The device also retains 86.05 % of the SC even after 5000 cycles. The measured specific energy and power were 286.18 Whg -1+ and 36.36 Wg -1 respectively.

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“…have significant drawbacks of low rate of charge-discharge due to slow ion diffusion within the bulk of the electrode [8]. Transition metal oxides [9]/hydroxides [10] /sulphides [11] are promising candidates owing to their low environmental toxicity and high SC, which have been widely investigated in an attempt to attain high SC and long cycle life.…”

Section: Introductionmentioning

confidence: 99%

“…Variety of materials including not only electrically conducting polymers in pure [5][6][7] and composite/hybrid forms [8][9][10] but plenty of transition-metal oxides (TMO) viz. RuO2 [11], Co3O4 [2], Fe2O3 [4], NiO [3], Fe3O4 [12], FeOOH [13][14] Cu(OH)2, NiCo2O4, MnCo2O4 [15][16][17][18][19] etc., are being tested for fabrication of redox capacitors. Ubiquitous need of alternatives for RuO2 resulted due to high cost and limited sources of Ru.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Magnesium Oxide (MgO) thin films by spray pyrolysis and its capacitive characterizations

Mhetre¹,

Pathan²,

Thakur³

et al. 2022

ES Energy Environ.

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Magnesium oxide (MgO) electrodes for the supercapacitor applications have been prepared using automatic spray pyrolysis technique. 100 ml of 1 M aqueous Mg(NO3)2.6H2O solution was sprayed at 2 ml/min was on to the stainless SS substrate heated to 673 K. The prepared electrodes were analysed structurally by XRD, FESEM, EDX, and contact angle measurement, functional group by FTIR and electrochemically by cyclic voltammetric analyses (CV), electrochemical impedance spectroscopy (EIS) and the galvanostatic charge discharge (GCD) technique. Different peaks in XRD pattern coincide with the standard database of JCPDS 01-1235 indicating the formation of MgO. The formation of crystalline MgO has further been corroborated by EDX. The formation of MgO was studied the molecular interactions between the metal, oxygen and carbon elements though FTIR analysis. Peaks in the CV curves confirm the redox behavior of the MgO during the CV. The measured SC was as high as 202.36 Fg -1 . Superb electrochemical stability is observed at 100 mV/s scan rate. Using charge-discharge. GCD analyses show different behavior from the normal capacitors. The charging and discharging times were found nearly same for different applied currents. The observed maximum SC was 163.55 Fg -1 which is comparable with that obtained by CV.

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Electrochemical investigations of spray pyrolysed ruthenium incorporated Co3O4 electrodes prepared via aqueous route

Cited by 29 publications

References 39 publications

Elucidating the Role of Copper-Induced Mixed Phases on the Electrochemical Performance of Mn-Based Thin-Film Electrodes

Elucidating the Role of Copper-Induced Mixed Phases on the Electrochemical Performance of Mn-Based Thin-Film Electrodes

Structural and electrochemical study of hybrid flexible electrodes containing in-situ growth of RuO2 within PPy matrix controlled by RuCl3 % consumed during SILAR synthesis for preparation of symmetric device

Preparation of Magnesium Oxide (MgO) thin films by spray pyrolysis and its capacitive characterizations

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