Facile electrochemical synthesis of 3D nano-architectured CuO electrodes for high-performance supercapacitors

Deng, Ming-Jay; Wang, Cheng-Chia; Ho, Pei-Jung; Lin, Chih‐Ming; Chen, Jin‐Ming; Lu, Kueih‐Tzu

doi:10.1039/c4ta02444c

Cited by 73 publications

(32 citation statements)

References 35 publications

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“…The binding energy of major peaks, such as Cu 2p3/2 and Cu 2p1/2, appeared at 937.5 eV and 958.4 eV, with a spin-orbit splitting of about 20.1 eV, as shown in Figure 5c. Moreover, the presence of two satellite peaks indicated the existence of Cu 2+ located at about 10 eV higher than those of the Cu 2p3/2 and Cu 2p1/2 [42,43]. The magnified O 1s peak is shown in Figure 5d.…”

Section: Resultsmentioning

confidence: 92%

Structural, Optical, and Antibacterial Efficacy of Pure and Zinc-Doped Copper Oxide Against Pathogenic Bacteria

et al. 2021

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Copper oxide and Zinc (Zn)-doped Copper oxide nanostructures (CuO-NSs) are successfully synthesized by using a hydrothermal technique. The as-obtained pure and Zn-doped CuO-NSs were tested to study the effect of doping in CuO on structural, optical, and antibacterial properties. The band gap of the nanostructures is calculated by using the Tauc plot. Our results have shown that the band gap of CuO reduces with the addition of Zinc. Optimization of processing conditions and concentration of precursors leads to the formation of pine needles and sea urchin-like nanostructures. The antibacterial properties of obtained Zn-doped CuO-NSs are observed against Gram-negative (Pseudomonas aeruginosa, Klebsiella pneumonia, Escherichia coli) and Gram-positive (Staphylococcus aureus) bacteria via the agar well diffusion method. Zn doped s are found to have more effective bacterial resistance than pure CuO. The improved antibacterial activity is attributed to the reactive oxygen species (ROS) generation.

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Section: Resultsmentioning

confidence: 92%

Structural, Optical, and Antibacterial Efficacy of Pure and Zinc-Doped Copper Oxide Against Pathogenic Bacteria

et al. 2021

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“…Because of their unique properties such as high theoretical capacity, low cost, chemical stability, and natural abundance, various metal oxide electrode materials have emerged as promising candidates in the future generation of LIBs and SCs, such as SnO 2 , [6,7] Co 3 O 4 , [8,9] Mn 3 O 4 , [10,11] Fe 3 O 4 , [12,13] and CuO. [14,15] Among metal oxides, CuO with its high theoretical capacity of 670 mA h g À1 is therefore one of the most promising potential anodes to replace conventional graphite anode materials (372 mA h g…”

Section: Introductionmentioning

confidence: 99%

Core–Shell Carbon‐Coated CuO Nanocomposites: A Highly Stable Electrode Material for Supercapacitors and Lithium‐Ion Batteries

Wen

Zhang

et al. 2015

Chemistry An Asian Journal

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Herein we present a simple method for fabricating core-shell mesostructured CuO@C nanocomposites by utilizing humic acid (HA) as a biomass carbon source. The electrochemical performances of CuO@C nanocomposites were evaluated as an electrode material for supercapacitors and lithium-ion batteries. CuO@C exhibits an excellent capacitance of 207.2 F g(-1) at a current density of 1 A g(-1) within a potential window of 0-0.46 V in 6 M KOH solution. Significantly, CuO electrode materials achieve remarkable capacitance retentions of approximately 205.8 F g(-1) after 1000 cycles of charge/discharge testing. The CuO@C was further applied as an anode material for lithium-ion batteries, and a high initial capacity of 1143.7 mA h g(-1) was achieved at a current density of 0.1 C. This work provides a facile and general approach to synthesize carbon-based materials for application in large-scale energy-storage systems.

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“…Because of their unique properties such as high theoretical capacity, low cost, chemical stability, and natural abundance, various metal oxide electrode materials have emerged as promising candidates in the future generation of LIBs and SCs, such as SnO 2 ,6, 7 Co 3 O 4 ,8, 9 Mn 3 O 4 ,10, 11 Fe 3 O 4 ,12, 13 and CuO 14. 15 Among metal oxides, CuO with its high theoretical capacity of 670 mA h g −1 is therefore one of the most promising potential anodes to replace conventional graphite anode materials (372 mA h g −1 ) 16. 17…”

Section: Introductionmentioning

confidence: 99%

Physiochemical Characterization of Iodine(V) Oxide, Part 1: Hydration Rates

Little

Emery

Nittinger

et al. 2014

Propellants Explo Pyrotec

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In the first of a series of papers on the iodine(V) oxide system, the chemical and physical properties associated with iodine(V) oxide in its anhydride (I2O5) and hydrated states (HI3O8 and HIO3) are examined. The three forms of the oxide have been investigated utilizing differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and powder X‐ray diffraction (PXRD). Furthermore, the hydration rates governing the conversion of the anhydride (I2O5) to the initial hydrate (HI3O8) and later to the final hydrated state (HIO3) are reported and discussed. Results from this study suggest that the hydration mechanism for I2O5→HI3O8 begins with an accelerating period described as a nucleation and growth phase followed by a decelerating period that is diffusion limited. The initial rate of hydration was observed to be governed by a nucleation and growth mechanism, which was inhibited by covering the surface of the particle with an inert metal. Based on this investigation the initial rate of hydration appears to be strongly dependent on the anhydride’s available surface area which facilitates nucleation and growth of HI3O8. The final step, HI3O8→HIO3, proceeds through an initial induction period followed by a continuous acceleratory period unlike the first hydration step.

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Facile electrochemical synthesis of 3D nano-architectured CuO electrodes for high-performance supercapacitors

Abstract: A facile, inexpensive and potentially scalable technique has been developed to fabricate well designed CuO NRs on tentacle-like nanoporous Ni/Ni foam for high-performance supercapacitors.

Cited by 73 publications

References 35 publications

Structural, Optical, and Antibacterial Efficacy of Pure and Zinc-Doped Copper Oxide Against Pathogenic Bacteria

Structural, Optical, and Antibacterial Efficacy of Pure and Zinc-Doped Copper Oxide Against Pathogenic Bacteria

Core–Shell Carbon‐Coated CuO Nanocomposites: A Highly Stable Electrode Material for Supercapacitors and Lithium‐Ion Batteries

Physiochemical Characterization of Iodine(V) Oxide, Part 1: Hydration Rates

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