Aqueous Route Synthesis of PAni Electrodes by Chemical Bath Deposition and Their Cyclic Voltammetric Analyses at Different Scan Rates

Thokale, Shilpa P.; Kore, Rohan M.; Kambale, Sandesh V.; Thakur, A. V.; Lokhande, B. J.

doi:10.1002/masy.201800215

Cited by 6 publications

(4 citation statements)

References 22 publications

(34 reference statements)

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“…Figure 8A clearly shows that the charging and discharging curves of all samples at different current densities are not symmetrical and exhibit a pseudocapacitive nature. Similar behavior has been observed by Thokale et al [41] .…”

Section: Gcd Studysupporting

confidence: 90%

Effect of Deposition Time on Electrochemical Properties of Polyaniline Samples Prepared by Chemical Bath Deposition

2022

J Mod Polym Chem Mater

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Objective: The objective of the current work is to synthesize the conducting polymer, i.e. polyaniline electrodes, with different reaction times using the chemical bath deposition (CBD) method. The further study involves its effect on structural, morphological, and electrochemical characteristics of the PANI electrodes. Methods:The CBD method is used to synthesize the PANI electrodes. The analysis of the electrodes was carried out using X-Ray diffraction, contact angle, FESEM with EDX, Fourier-transform infrared spectroscopy, and electrochemical characterizations. Results:The structural and wettability analysis confirmed the amorphous and hydrophilic properties of the PANI electrodes. The contact angle increased with an increase in the reaction time of the PANI electrodes. The morphological images of all samples showed that the thickness of the interconnected nanofibres increased with the deposition time. Electrochemical analysis of the PANI electrodes was carried out by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy. The evaluated highest value of specific capacitance (SC) by CV was 601F/g at 5mV/s in 1M KOH. GCD provided specific energy of 9.10Whg −1 , specific power of 22kW kg −1, and an efficiency of 92.89%. Conclusion:It is feasible to synthesize PANI samples with the CBD method. The physical and electrochemical properties of electrodes prepared at different deposition times change with increasing deposition times. Deposition time does not affect the amorphous nature of the sample, and the sample deposited for 60min exhibited the highest SC 601F/gm at 5mVs -1 .

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Section: Gcd Studysupporting

confidence: 90%

Effect of Deposition Time on Electrochemical Properties of Polyaniline Samples Prepared by Chemical Bath Deposition

2022

J Mod Polym Chem Mater

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“…Pseudocapacitors are often used for fast discharge and high power applications [1][2][3][4]. Many electrically conducting polymers in pure [5][6][7] and composite/hybrid forms [8-10], along with various transition metal oxides like RuO 2 [11], Co 3 O 4 [2], Fe 2 O 3 [4], NiO [3], Fe 3 O 4 [12], FeOOH [13][14] Cu(OH) 2 [15][16][17], CuO [18], etc. have been studied as electrode materials for supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

Unveiling the future of Ultrasound Chemical Bath Deposition method for flexible supercapacitive electrodes : Impact of cationic precursors on MnO2 flexible electrodes – a case study

Deshmane,

Thakur,

Salunkhe

et al. 2024

Preprint

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MnO2 flexible electrodes (FEs) were synthesized by novel ultrasound chemical bath deposition (UCBD) using aqueous solutions of three different manganese (II) cationic precursors viz. manganese acetate, manganese chloride, and manganese nitrate. 1M aqueous NaOH solution was used as the oxidizer for each precursor. Under optimized preparative conditions, uniform MnO2 films grew on the substrates to form the FEs. XRD analysis confirmed the formation of crystalline MnO2, further corroborated by EDX. FESEM imaging revealed a transition in surface morphology from mud-like structures with manganese acetate to randomly arranged nanoflakes with manganese nitrate. Surface modification was confirmed by contact angle measurements. Cyclic voltammetry showed the specific capacitance (SC) varied with the Mn2+ cation source. Galvanostatic charge-discharge further confirmed this trend. The highest SC of 408.50 Fg-1 was exhibited by electrodes prepared with Mn(NO3)2.6H2O with 90.61 % retention in SC even after 2000 CV cycles.

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“…Carbon materials, conducting polymers and transition metal oxides/ hydroxides with high surface area are commonly used as supercapacitor electrode materials [3]. Carbon based materials (carbon aerogels, carbon nanotubes and graphene) [4][5][6] as electrode materials for electrical double-layer capacitors have been extensively studied to increase their low SC which directly limited their practical application [7]. Conducting polymers such as polyaniline, polypyrrole, poly(3,4-ethylene dioxy thiophene), etc.…”

Section: Introductionmentioning

confidence: 99%

“…Redox capacitors are used for high power applications due to quick discharging [1][2][3][4]. 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.…”

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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Aqueous Route Synthesis of PAni Electrodes by Chemical Bath Deposition and Their Cyclic Voltammetric Analyses at Different Scan Rates

Cited by 6 publications

References 22 publications

Effect of Deposition Time on Electrochemical Properties of Polyaniline Samples Prepared by Chemical Bath Deposition

Effect of Deposition Time on Electrochemical Properties of Polyaniline Samples Prepared by Chemical Bath Deposition

Unveiling the future of Ultrasound Chemical Bath Deposition method for flexible supercapacitive electrodes : Impact of cationic precursors on MnO2 flexible electrodes – a case study

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

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