Facile Synthesis of Hierarchical CuO Nanoflower for Supercapacitor Electrodes

Ye, Jiaye; Zheng, Li; Dai, Zhaoxin; Zhang, Zhuoya; Guo, Meiqing; Wang, Xiaojun

doi:10.1007/s11664-016-4587-1

Cited by 38 publications

(16 citation statements)

References 45 publications

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“…Mostly, the strategy of using various intriguing morphologies of a metal oxide to tune the deliverable specific capacitance is employed. These include nanoflowers, nano-ribbons, core-shell, etc 25 – 27 . Once the power density obtained using a particular solid metal oxide with various morphologies indicate saturation, attempts start to investigate the next metal oxide.…”

Section: Introductionmentioning

confidence: 99%

Hollow nanostructures of metal oxides as next generation electrode materials for supercapacitors

Sharma¹,

Singh²,

Chandra³

2018

Sci Rep

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Hollow nanostructures of copper oxides help to stabilize appreciably higher electrochemical characteristics than their solid counter parts of various morphologies. The specific capacitance values, calculated using cyclic voltammetry (CV) and charge-discharge (CD) studies, are found to be much higher than the values reported in literature for copper oxide particles showing intriguing morphologies or even composites with trendy systems like CNTs, rGO, graphene, etc. The proposed cost-effective synthesis route makes these materials industrially viable for application in alternative energy storage devices. The improved electrochemical response can be attributed to effective access to the higher number of redox sites that become available on the surface, as well as in the cavity of the hollow particles. The ion transport channels also facilitate efficient de-intercalation, which results in the enhancement of cyclability and Coulombic efficiency. The charge storage mechanism in copper oxide structures is also proposed in the paper.

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Section: Introductionmentioning

confidence: 99%

Hollow nanostructures of metal oxides as next generation electrode materials for supercapacitors

Sharma¹,

Singh²,

Chandra³

2018

Sci Rep

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“…As a result, efforts had been cantered on trying to find alternative as well as less expensive electrodes like Co3O4, MnO and NiO to investigate their ability to construct supercapacitors with increased power and energy densities. Cupric Oxide (CuO) is a renowned metal oxide by its specific characteristics, which includes non-toxicity, availability, less expensive as well as simple to fabricate in the shape of nano size which have resulted in its usage in supercapacitor electrodes [44]. Two tactics counter these brief comments.…”

Section: Cupric Oxide Electrodementioning

confidence: 99%

Cupric Oxide based Supercapacitors: A Review

Jithul

Samra

2022

J. Phys.: Conf. Ser.

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Energy storage materials are critical for reliable, safe, and flexible energy usage, as well as for using renewable energy sources. As a result, the materials that used to store energy encompass a huge range of materials that are attracting a lot of attention from research and development to industry. Supercapacitors (SCs) have attracted considerable interest as high-power storage device, with the potential to make a contribution to the speedy increase of low-energy electronics (e.g., transportable electronic home equipment, wearable) and military packages. The selection of electrode materials may also have a big impact on the storage capacity of supercapacitors. The review paper discusses the energy storage devices, types of supercapacitors, preparation methods of CuO and advantage of CuO/RGO hybrid nano composite electrode supercapacitors.

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“…CuO can be synthesized using various physical and chemical methods such as laser ablation, ball milling, arc discharge, chemical reduction, microemulsion, sonochemical, photochemical, electrolysis, thermal decomposition, combustion, hydrothermal, and microwave synthesis methods. 15 Among these, microwave synthesis (MWS) is a rapid, efficient, and cost-effective technique for the fabrication of a wide range of inorganic nanostructures with tailored structures and compositions. It has received tremendous attention in the field of synthetic chemistry due to its fairly simple, low-cost, and large-scale production merits.…”

Section: Introductionmentioning

confidence: 99%

Facile Microwave Synthesis of Hierarchical Porous Copper Oxide and Its Catalytic Activity and Kinetics for Carbon Monoxide Oxidation

2022

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The synthesis of copper oxide (CuO)-based nanomaterials has received a tremendous deal of interest in recent years. Particularly, the design and development of novel CuO structures with improved physical and chemical properties have attracted immense attention, especially for catalysis applications. We report on a rational, rapid, and surfactant-free microwave synthesis (MWS) of hierarchical porous copper oxide (HP-CuO) with a three-dimensional (3D) sponge-like topology using an MWS reactor. The activity of the microwave (MW)-synthesized HP-CuO catalysts for carbon monoxide (CO) oxidation was studied and compared to CuO prepared by the conventional heating method (CHM). Results showed that HP-CuO catalysts prepared by MWS for 10 and 30 min surpassed the CuO catalyst prepared by CHM, exhibiting T 80 of 98 and 115 °C, respectively, as compared to 185 °C of CuO prepared by CHM (T 80 is the temperature corresponding to 80% CO conversion). In addition, the MW-synthesized HP-CuO catalysts outperformed the CHM-synthesized CuO, achieving a 100% CO conversion at 150 °C compared to 240 °C in the case of CuO prepared by CHM. Interestingly, the HP-CuO catalyst expressed workable CO conversion kinetics with a reaction rate of c.a.35 μmol s −1 g −1 at 150 °C and apparent activation energy (E a ) of 82 kJ mol −1 . The HP-CuO catalyst showed excellent cycling and long-term stabilities for CO oxidation up to 4 cycles and 72 h on the stream, respectively. The enhanced catalytic activity and stability of the HP-CuO catalyst appear to result from the unique topological and structural features of HP-CuO, which were revealed by SEM, XRD, Raman, BET, TGA, XPS, and TPR techniques.

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Facile Synthesis of Hierarchical CuO Nanoflower for Supercapacitor Electrodes

Cited by 38 publications

References 45 publications

Hollow nanostructures of metal oxides as next generation electrode materials for supercapacitors

Hollow nanostructures of metal oxides as next generation electrode materials for supercapacitors

Cupric Oxide based Supercapacitors: A Review

Facile Microwave Synthesis of Hierarchical Porous Copper Oxide and Its Catalytic Activity and Kinetics for Carbon Monoxide Oxidation

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