Nanopetals assembled copper oxide electrode for supercapacitor using novel 1-(1′-methyl-2′-oxo-propyl)-2,3-dimethylimidazolium chloride ionic liquid as an electrolyte

Awale, Deepak V.; Bhise, Sagar C.; Patil, Swati J.; Vadiyar, Madagonda M.; Jadhav, Pravin; Navathe, G.J.; Kim, J.H.; Patil, Pramod S.; Kolekar, Sanjay S.

doi:10.1016/j.ceramint.2015.10.155

Cited by 12 publications

(6 citation statements)

References 28 publications

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“…The galvanostatic charging–discharging profiles of the prepared electrode material at different current densities of 1to 4 Ag –1 within the potential window 0.1 to 0.6 V in 1 M KOH electrolytic solutions are shown in Figure a–c. The nonlinear features of the charging–discharging profile for all three cases are different from the typical triangular shape of EDLCs, which could be attributed to the pseudocapacitive nature of the prepared electrode material . The discharge time of the materials (Cu 2 O@C, at 350 °C) was obtained and was longer than that of the bare Ni-foam electrode and CuO@C at 450 and 550 °C, which exhibits all the electroactive sites of copper oxide.…”

Section: Resultsmentioning

confidence: 78%

“…The nonlinear features of the charging–discharging profile for all three cases are different from the typical triangular shape of EDLCs, which could be attributed to the pseudocapacitive nature of the prepared electrode material. 55 The discharge time of the materials (Cu 2 O@C, at 350 °C) was obtained and was longer than that of the bare Ni-foam electrode and CuO@C at 450 and 550 °C, which exhibits all the electroactive sites of copper oxide. The smooth and almost symmetric charging–discharging profile appears in all cases ( Figure 5 a–c), demonstrating the good pseudocapacitive characteristics indicating the redox reversibility of typical electrode materials.…”

Section: Resultsmentioning

confidence: 88%

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Calcination Strategy for Scalable Synthesis of Pithecellobium-Type Hierarchical Dual-Phase Nanostructured Cu_xO to Columnar Self-Assembled CuO and Its Electrochemical Performances

et al. 2021

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The search for low-cost environmentally benign promising electrode materials for high-performance electrochemical application is an urgent need for an applaudable solution for the energy crisis. For this, the present attempt has been made to develop a scalable synthetic strategy for the preparation of pure and dual-phase copper oxide self-hybrid/self-assembled materials from a copper oxalate precursor using the calcination route. The obtained samples were characterized by means of various physicochemical analytical techniques. Notably, we found that the BET surface area and pore volume of copper oxides measured by N 2 adsorption− desorption decrease with the elevation of calcination temperature. From the XRD analysis, we observed the formation of a Cu 2 O cubic phase at low temperatures and a CuO monoclinic phase at high temperatures (i.e., 450 and 550 °C). FTIR and RAMAN spectroscopy were employed for bonding and vibrational structure analysis. The self-assembled dual-phase copper oxide particle as a pithecellobium-type hierarchical structure was observed through SEM of the sample prepared at 350 °C. The surface morphological structure for the samples obtained at 450 and 550 °C was a bundle-like structure developed though columnar selfassembling of the particles. All the above techniques confirmed the successful formation of Cu 2 O/CuO nanoparticles. Afterward, the electrochemical properties of the as-synthesized copper oxides reinforced by introducing carbon black (10% wt) were explored via cyclic voltammetry, electrochemical impedance spectroscopy, and galvanometric charge−discharge analysis. The Cu 2 O system exhibits the maximum specific capacitance performance value of 1355 F/g, whereas in the CuO system (at 450 and 550 °C), it possesses values of 903 and 724 F/g at a scan rate of 2 mV/s. This study reveals that the electrochemical properties of Cu 2 O are better than those of the CuO nanoparticles, which could be ascribed to the high surface area and morphology. The present assessment of the electrochemical properties of the developed material could pave the way to a low-cost electrode material for developing other high-performance hybrid electrodes for supercapacitor or battery applications.

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Section: Resultsmentioning

confidence: 78%

Section: Resultsmentioning

confidence: 88%

Calcination Strategy for Scalable Synthesis of Pithecellobium-Type Hierarchical Dual-Phase Nanostructured Cu_xO to Columnar Self-Assembled CuO and Its Electrochemical Performances

et al. 2021

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“…S2, † as the scan rate increases there is no significant change in the shape of the CV curve, which indicates the excellent conductivity of the electrode materials. 40 As the scan rate increases, the cathodic peak shifted towards a more negative direction, this is the internal resistance of the electroactive material. The different charge storage mechanisms that take place on the surface of the electrode are based on the adsorption/desorption of H + ions on the surface.…”

Section: Resultsmentioning

confidence: 98%

Copper nanoparticles anchored onto boron-doped graphene nanosheets for use as a high performance asymmetric solid-state supercapacitor

Pandian

Pandurangan

2019

RSC Adv.

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“…Their influences on the physicochemical properties such as ionic size, viscosity, and nucleophilicity were analyzed to develop high performance IL‐based SCs. Similarly, copper oxide (CuO) was investigated by Awale et al, as pseudocapacitor electrode, due to its ecofriendly nature and low cost, along with a novel IL, 1‐(1′‐methyl‐2′‐oxo‐propyl)‐2,3‐dimethylimidazolium chloride, as electrolyte . The results demonstrated that the “nanopetal”‐structured copper oxide exhibited a C sp of 133 F g −1 in 0.2 m IL.…”

Section: Pseudocapacitors With Il As Electrolytementioning

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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Nanopetals assembled copper oxide electrode for supercapacitor using novel 1-(1′-methyl-2′-oxo-propyl)-2,3-dimethylimidazolium chloride ionic liquid as an electrolyte

Cited by 12 publications

References 28 publications

Calcination Strategy for Scalable Synthesis of Pithecellobium-Type Hierarchical Dual-Phase Nanostructured Cu_xO to Columnar Self-Assembled CuO and Its Electrochemical Performances

Calcination Strategy for Scalable Synthesis of Pithecellobium-Type Hierarchical Dual-Phase Nanostructured Cu_xO to Columnar Self-Assembled CuO and Its Electrochemical Performances

Copper nanoparticles anchored onto boron-doped graphene nanosheets for use as a high performance asymmetric solid-state supercapacitor

Ionic Liquids as Environmentally Benign Electrolytes for High‐Performance Supercapacitors

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Nanopetals assembled copper oxide electrode for supercapacitor using novel 1-(1′-methyl-2′-oxo-propyl)-2,3-dimethylimidazolium chloride ionic liquid as an electrolyte

Cited by 12 publications

References 28 publications

Calcination Strategy for Scalable Synthesis of Pithecellobium-Type Hierarchical Dual-Phase Nanostructured CuxO to Columnar Self-Assembled CuO and Its Electrochemical Performances

Calcination Strategy for Scalable Synthesis of Pithecellobium-Type Hierarchical Dual-Phase Nanostructured CuxO to Columnar Self-Assembled CuO and Its Electrochemical Performances

Copper nanoparticles anchored onto boron-doped graphene nanosheets for use as a high performance asymmetric solid-state supercapacitor

Ionic Liquids as Environmentally Benign Electrolytes for High‐Performance Supercapacitors

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Product

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Calcination Strategy for Scalable Synthesis of Pithecellobium-Type Hierarchical Dual-Phase Nanostructured Cu_xO to Columnar Self-Assembled CuO and Its Electrochemical Performances

Calcination Strategy for Scalable Synthesis of Pithecellobium-Type Hierarchical Dual-Phase Nanostructured Cu_xO to Columnar Self-Assembled CuO and Its Electrochemical Performances