Functionalized crown ether assisted morphological tuning of CuO nanosheets for electrochemical supercapacitors

Jagadale, S. D.; Teli, Aviraj M.; Kalake, S.V.; Sawant, Anand D.; Yadav, Ajay Kumar; Patil, P. S.

doi:10.1016/j.jelechem.2018.01.059

Cited by 35 publications

(11 citation statements)

References 24 publications

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Section: Resultsmentioning

confidence: 95%

“…As the amount of Cu or Fe increased to a certain amount, the compound could obscure the surface area and cause the surface area to decrease. According to the studies on the capacitance property, most other previous studies presented that Fe 2 O 3 usually had higher specific capacitances than CuO, [18,[154][155][156][157][158][159][160][161][162][163][164][165][166][167] following the Fe 2 O 3 and CuO theoretical specific capacitances of 3625 and 1800 Fg À 1 , respectively. [159,[168][169][170][171] For the preliminary study on μ-DMFC performance testing, the selected Cu-incorporated and Fe-incorporated Mn x O y at the molar ratio of Cu or Fe: Mn of 0.10 : 1 prepared by the impregnation and solvothermal methods was employed as an cathode catalyst and thin-film platinum was used as an anode catalyst in μ-DMFCs.…”

Section: Chemelectrochemmentioning

confidence: 99%

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Cu‐ and Fe‐Incorporated Manganese Oxides (Mn_xO_y) as Cathodic Catalysts for Hydrogen Peroxide Reduction (HPR) and Oxygen Reduction (OR) in Micro‐direct Methanol Fuel Cells

et al. 2022

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Improving manganese oxides as cathodic catalysts in direct methanol/hydrogen peroxide fuel cells by incorporation of Cu and Fe to promote oxygen reduction (OR) and hydrogen peroxide reduction (HPR) is reported. The Cu‐incorporated and Fe‐incorporated MnxOy were prepared by impregnation and solvothermal processes. From XRD, XPS, and XAS analyses, the obtained MnxOy consisted of MnO2 and mixed phases of Mn3O4 and Mn2O3 from impregnation and solvothermal methods, respectively. The Cu‐incorporated and Fe‐incorporated MnxOy included CuO and Fe2O3, respectively, through both methods. Addition of Cu and Fe decreased the BET surface area and increased the pore sizes as compared to the pristine MnO2. With the Fe : Mn molar ratio of 0.20 : 1, the Fe‐incorporated MnxOy from the solvothermal method presented the highest cathodic peaks under the cyclic voltammogram of HPR and OR at around 0.59 V of 11.59 mA cm−2 and −0.59 V of −12.33 mA cm−2, respectively. Compared to the Cu‐incorporated ones, the highest HPR peak at 0.68 V of 9.20 mA cm−2 and the highest OR peak at −0.59 V of −6.99 mA cm−2 were obtained from the Cu‐incorporated MnxOy prepared through the solvothermal method at the Cu : Mn molar ratio of 0.15 : 1. Incorporating Cu or Fe into MnO2 brought the improvement of electrocatalytic activity for HPR and OR. The Cu‐incorporated and Fe‐incorporated MnxOy from both methods showed a higher power density of μ‐DMFC than the pristine MnO2.

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Section: Resultsmentioning

confidence: 95%

Section: Chemelectrochemmentioning

confidence: 99%

Cu‐ and Fe‐Incorporated Manganese Oxides (Mn_xO_y) as Cathodic Catalysts for Hydrogen Peroxide Reduction (HPR) and Oxygen Reduction (OR) in Micro‐direct Methanol Fuel Cells

et al. 2022

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“…The straight line in the low frequency region due to Warburg impedance related to the intercalation of electrolyte within the CuO nanostructures. [ 22 ]…”

Section: Resultsmentioning

confidence: 99%

Comparative Studies on Synthetic Strategies for the Growth of CuO Nanostructures and Their Significant Impact on Supercapacitive Performance

Yadav

Pawale

Bobhate

et al. 2021

Macromolecular Symposia

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The copper oxide (CuO) nanostructures are synthesized by various simple and cost‐effective chemical methods. The morphology of metal oxide nanostructures depends on the synthetic strategy. The electrochemical behavior primarily depends on the morphology of the electrode. The significant impact of synthetic strategy on the structural, morphological, and subsequently on the supercapacitive performance of CuO nanostructures is studied. The chemical bath deposition (CBD) leads to well defined growth of 1D nanostructures, while the intermittent growth process (successive ionic layer adsorption and reaction, SILAR) leads to nanoparticulate morphology. CBD grown CuO nanorods have shown comparatively higher capacitance (207 F g−1) than CuO nanoparticles (147 F g−1) at current density of 2 A g−1.

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“…71 3.1. 78,79 NiO is a potential anode material for supercapacitors. Wei et al synthesized honeycomb-like mesoporous NiO microspheres via a hydrothermal reaction as a high performance cathode for AASCD.…”

Section: Aqueous Asymmetric Supercapacitor Devices Based On Metal Oxidesmentioning

confidence: 99%

Metal oxide-based supercapacitors: progress and prospectives

et al. 2019

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Functionalized crown ether assisted morphological tuning of CuO nanosheets for electrochemical supercapacitors

Cited by 35 publications

References 24 publications

Cu‐ and Fe‐Incorporated Manganese Oxides (Mn_xO_y) as Cathodic Catalysts for Hydrogen Peroxide Reduction (HPR) and Oxygen Reduction (OR) in Micro‐direct Methanol Fuel Cells

Cu‐ and Fe‐Incorporated Manganese Oxides (Mn_xO_y) as Cathodic Catalysts for Hydrogen Peroxide Reduction (HPR) and Oxygen Reduction (OR) in Micro‐direct Methanol Fuel Cells

Comparative Studies on Synthetic Strategies for the Growth of CuO Nanostructures and Their Significant Impact on Supercapacitive Performance

Metal oxide-based supercapacitors: progress and prospectives

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Functionalized crown ether assisted morphological tuning of CuO nanosheets for electrochemical supercapacitors

Cited by 35 publications

References 24 publications

Cu‐ and Fe‐Incorporated Manganese Oxides (MnxOy) as Cathodic Catalysts for Hydrogen Peroxide Reduction (HPR) and Oxygen Reduction (OR) in Micro‐direct Methanol Fuel Cells

Cu‐ and Fe‐Incorporated Manganese Oxides (MnxOy) as Cathodic Catalysts for Hydrogen Peroxide Reduction (HPR) and Oxygen Reduction (OR) in Micro‐direct Methanol Fuel Cells

Comparative Studies on Synthetic Strategies for the Growth of CuO Nanostructures and Their Significant Impact on Supercapacitive Performance

Metal oxide-based supercapacitors: progress and prospectives

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Product

Resources

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Cu‐ and Fe‐Incorporated Manganese Oxides (Mn_xO_y) as Cathodic Catalysts for Hydrogen Peroxide Reduction (HPR) and Oxygen Reduction (OR) in Micro‐direct Methanol Fuel Cells

Cu‐ and Fe‐Incorporated Manganese Oxides (Mn_xO_y) as Cathodic Catalysts for Hydrogen Peroxide Reduction (HPR) and Oxygen Reduction (OR) in Micro‐direct Methanol Fuel Cells