Fabrication of a novel graphene nano-sheet electrode embedded with nano-particles of zirconium dioxide for electrochemical capacitors: Ions-redeposition on the surface of nanoporous electrode

Nasibi, Mahdi; Shishesaz, Mohammadreza; Sarpoushi, Mahdi Robat; Borhani, Mohammad Reza; Ahmad, Zaki

doi:10.1016/j.mssp.2014.11.007

Cited by 3 publications

(3 citation statements)

References 16 publications

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“…The improved capacity is a consequence of the synergistic interaction between highly conducting MWCNTs and chemically active ZrO 2 nanostructures. The charge storage mechanisms in the system was a convolution of additive effects originating from the intercalation/de-intercalation (ZrO 2 + δ M + + δ e − ↔ M δ ZrO 2 ) and surface absorption/desorption ((ZrO 2 ) surface + M + + e − ↔ (ZrOOM) surface ) of the electrolyte cations (M + ) 37 . As MWZ composite acts like a positive electrode, during charging Li + is driven out while in the discharging cycle, intercalation of Li + into the ZrO 2 mesoporous structures takes place.…”

Section: Resultsmentioning

confidence: 99%

Enhancing Specific Energy and Power in Asymmetric Supercapacitors - A Synergetic Strategy based on the Use of Redox Additive Electrolytes

Singh

Chandra

2016

Sci Rep

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The strategy of using redox additive electrolyte in combination with multiwall carbon nanotubes/metal oxide composites leads to a substantial improvements in the specific energy and power of asymmetric supercapacitors (ASCs). When the pure electrolyte is optimally modified with a redox additive viz., KI, ~105% increase in the specific energy is obtained with good cyclic stability over 3,000 charge-discharge cycles and ~14.7% capacitance fade. This increase is a direct consequence of the iodine/iodide redox pairs that strongly modifies the faradaic and non-faradaic type reactions occurring on the surface of the electrodes. Contrary to what is shown in few earlier reports, it is established that indiscriminate increase in the concentration of redox additives will leads to performance loss. Suitable explanations are given based on theoretical laws. The specific energy or power values being reported in the fabricated ASCs are comparable or higher than those reported in ASCs based on toxic acetonitrile or expensive ionic liquids. The paper shows that the use of redox additive is economically favorable strategy for obtaining cost effective and environmentally friendly ASCs.

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Section: Resultsmentioning

confidence: 99%

Enhancing Specific Energy and Power in Asymmetric Supercapacitors - A Synergetic Strategy based on the Use of Redox Additive Electrolytes

Singh

Chandra

2016

Sci Rep

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“…This in turn increased the specific surface area, Faradaic reactions and charge storage capabilities, but reduced the current response and power delivery capabilities. The same researchers were able to achieve a C s of 11.84 F g À1 at 10 mV s À1 in their recent report based on G nanosheets modified with zirconium dioxide [27].…”

Section: Graphenementioning

confidence: 86%

“…A good example are the 1D carbon nanostructured materials which are promising potential transport carriers and charge collection components . They provide high conductivity, short ion diffusion pathways and excellent interfacial integrity .…”

Section: Introductionmentioning

confidence: 99%

A review on the use of carbon nanostructured materials in electrochemical capacitors

Mombeshora

Nyamori

2015

Int. J. Energy Res.

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SUMMARYSustainable and renewable energy resources, as well as energy storage systems (ESSs), are amongst the current and critical global requirements. A comparative discussion on batteries, fuel cells and electrochemical capacitors (ECs) is presented. The mechanisms involved in various classes of ECs are also elaborated. Additionally, a historical background highlighting some of the major steps associated with EC development over the years is discussed in this review. In particular, carbon nanostructured materials have high potential in the development of ESSs, and hence this review presents an insight on the current ESSs with a strong bias towards these materials as ECs. The current status of carbon nanomaterials, such as carbon nanotubes, nanofibers, nano-onions, nanorods, fullerenes and graphene nanosheets, in ECs is reviewed. The associated effects of nanostructural parameters, such as pore sizes and specific electro-active areas, amongst others, in terms of energy storage capabilities are also discussed. Typical physicochemical characterisation techniques, which enrich understanding of their characteristics, are also reviewed. The discussion views set platforms for a variety of unique carbon nanomaterial designs with high prospective specific capacitance. Key porosity tailoring protocols, such as chemical activation, introduction of heteroatoms in carbon nanostructures and template synthesis methods, are also reviewed. The effects of other device components, such as electrolyte ion size and solvent system, electrode design and use of binders, to the overall capability of EC, are also discussed.

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Developing a sustainable semiconductor hetero-system with Gd-Ho-Dy tri-doping in ZrO2 for enhanced performance and efficiency in advanced energy systems

Jaffri,

Ahmad,

Abrahams

et al. 2024

Optical Materials

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Fabrication of a novel graphene nano-sheet electrode embedded with nano-particles of zirconium dioxide for electrochemical capacitors: Ions-redeposition on the surface of nanoporous electrode

Cited by 3 publications

References 16 publications

Enhancing Specific Energy and Power in Asymmetric Supercapacitors - A Synergetic Strategy based on the Use of Redox Additive Electrolytes

Enhancing Specific Energy and Power in Asymmetric Supercapacitors - A Synergetic Strategy based on the Use of Redox Additive Electrolytes

A review on the use of carbon nanostructured materials in electrochemical capacitors

Developing a sustainable semiconductor hetero-system with Gd-Ho-Dy tri-doping in ZrO2 for enhanced performance and efficiency in advanced energy systems

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