Electrochemical performance of potentiodynamically deposited polyaniline electrodes in ionic liquid

Patil, Dipali S.; Pawar, Sachin A.; Patil, Swati J.; Salavi, P.P.; Kolekar, Sanjay S.; Devan, Rupesh S.; Ma, Yuan‐Ron; Kim, J.H.; Shin, Jae Cheol; Patil, Pramod S.

doi:10.1016/j.jallcom.2015.06.190

Cited by 22 publications

(8 citation statements)

References 26 publications

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“…Over the years, SECM has been employed for investigating various aspects of supercapacitors, including the density of ion adsorption sites at the electrode−electrolyte interface, charge transfer kinetics, morphology, and electrochemical activity on a micron scale. 32,33,57,58 The inset of Figure 4a can contribute to a significantly enhanced tip current, which is suitable for various SECM operating modes, such as generation-collection and feedback. The tip voltammograms (Figure S5) show a welldefined "S" shape, indicating that the Pt tip is suitable for electrochemical mapping.…”

Section: Resultsmentioning

confidence: 99%

Prompt Thermal Transfer Across the sp³–sp² Interfaces for the Enhanced Electrochemical Performance of Aqueous Carbon-Based Supercapacitors

Lu,

Xie,

Yang

et al. 2024

Ind. Eng. Chem. Res.

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The local thermal accumulation induced by the charging process of the aqueous supercapacitors will facilitate water splitting, which seriously decreases the energy density and safety of aqueous supercapacitors. Therefore, it is necessary to evacuate the heat from the active sites and identify the types of side reactions. In this study, we employ a self-assembly strategy to successfully synthesize a highly thermally conductive three-dimensional nanodiamond-reduced graphene oxide (NDs-rGO) aerogel. The NDs-rGO aerogel is used as the electrode material, which can expand the operating voltage of alkaline aqueous symmetric supercapacitors to 1.1 V, much higher than that of previously reported carbon-based symmetric supercapacitors (≤1.0 V). Moreover, we have, for the first time, utilized scanning electrochemical microscopy to confirm the beneficial role of materials with thermally conductive interfaces in dissipating heat during the charging process of supercapacitor electrodes. As a result, the aqueous NDs-rGO supercapacitor device exhibits excellent reversibility (100% capacitance retention after 10,000 cycles) and achieves an energy density of 12.2 W h kg −1 at a high working voltage of 1.1 V. The excellent electrochemical performance may be ascribed to the fact that the redox self-assembly process in NDs-rGO creates high thermal-conductivity heterogeneous interfaces between sp 2 −sp 3 structures, enabling rapid heat dissipation during the charging process, suppressing water splitting, and thus increasing the working voltage of the supercapacitors.

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Section: Resultsmentioning

confidence: 99%

Prompt Thermal Transfer Across the sp³–sp² Interfaces for the Enhanced Electrochemical Performance of Aqueous Carbon-Based Supercapacitors

Lu,

Xie,

Yang

et al. 2024

Ind. Eng. Chem. Res.

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“…Furthermore, another reduction peak was observed at E = 0,103V / SCE, which was due to the reduction of emeraldine polyaniline salt (semi oxidized: PANI/ ES) to leuco polyaniline emeraldine base [28].…”

Section: Cyclic Voltammetry Experimentsmentioning

confidence: 97%

Electrosorption Removal of the Zinc Ions from Aqueous Solution on an Artificial Electrode based in the Banana Wastes

Benakouche

Bounoughaz

2017

Journal of Electrochemical Science and Technology

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The valorization of domestic wastes becomes a very important research axis that can reduce the energy consumption and protect our environment. The objective of this study is to remove zinc ions from wastewater by using banana peels after their activation as sensor in the working electrode for an environmental application. Banana peels were dried, crushed and treated with sulfuric acid then mixed with polyaniline to improve their electrical conductivity. Cyclic voltammetry and chronoamperometry were used for electrochemistry tests. The obtained voltammogramms at well optimized conditions of applied potential of -1.3 V/SCE and initial zinc concentration of 0.2M during 2 hours of electrolysis, showed the reduction peak of the zinc at a potential of -1.14 V/SCE, which confirmed the activity of this electrode. The modeling of experimental data revealed that the adsorption was fitted by the Langmuir isotherm with a maximal adsorption capacity of 3.4188 mg/g. Changes in the structure of the powder after the electrosorption was noticed by SEM and EDX. Finally, the dosage of the electrolytic solution showed a diminution of the zinc concentration with yield of 99.99%.

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“…Using activated carbon electrodes impregnated with this electrolyte, the resulting symmetric SC showed a C sp of 100 F g −1 and an ED of 32 Wh kg −1 . Following another approach, Patil et al have reported functionalization of stainless still collectors with polyaniline obtained by electropolymerization of aniline in [NMPyr][HSO 4 ]. Under optimized conditions, they obtained a C sp of 581 F g −1 and an ED of 96.6 Wh kg −1 at 1 mA cm −2 .…”

Section: Ils For Edlcs and Hybrid Scsmentioning

confidence: 99%

Ionic Liquids as Environmentally Benign Electrolytes for High‐Performance Supercapacitors

et al. 2018

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Electrochemical capacitors (ECs) are a vital class of electrical energy storage (EES) devices that display the capacity of rapid charging and provide high power density. In the current era, interest in using ionic liquids (ILs) in high‐performance EES devices has grown exponentially, as this novel versatile electrolyte media is associated with high thermal stability, excellent ionic conductivity, and the capability to withstand high voltages without undergoing decomposition. ILs are therefore potentially useful materials for improving the energy/power performances of ECs without compromising on safety, cyclic stability, and power density. The current review article underscores the importance of ILs as sustainable and high‐performance electrolytes for electrochemical capacitors.

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Electrochemical performance of potentiodynamically deposited polyaniline electrodes in ionic liquid

Cited by 22 publications

References 26 publications

Prompt Thermal Transfer Across the sp³–sp² Interfaces for the Enhanced Electrochemical Performance of Aqueous Carbon-Based Supercapacitors

Prompt Thermal Transfer Across the sp³–sp² Interfaces for the Enhanced Electrochemical Performance of Aqueous Carbon-Based Supercapacitors

Electrosorption Removal of the Zinc Ions from Aqueous Solution on an Artificial Electrode based in the Banana Wastes

Ionic Liquids as Environmentally Benign Electrolytes for High‐Performance Supercapacitors

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Electrochemical performance of potentiodynamically deposited polyaniline electrodes in ionic liquid

Cited by 22 publications

References 26 publications

Prompt Thermal Transfer Across the sp3–sp2 Interfaces for the Enhanced Electrochemical Performance of Aqueous Carbon-Based Supercapacitors

Prompt Thermal Transfer Across the sp3–sp2 Interfaces for the Enhanced Electrochemical Performance of Aqueous Carbon-Based Supercapacitors

Electrosorption Removal of the Zinc Ions from Aqueous Solution on an Artificial Electrode based in the Banana Wastes

Ionic Liquids as Environmentally Benign Electrolytes for High‐Performance Supercapacitors

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Prompt Thermal Transfer Across the sp³–sp² Interfaces for the Enhanced Electrochemical Performance of Aqueous Carbon-Based Supercapacitors

Prompt Thermal Transfer Across the sp³–sp² Interfaces for the Enhanced Electrochemical Performance of Aqueous Carbon-Based Supercapacitors