Polymer-Based Composite Materials: Characterizations

Cherusseri, Jayesh; Pramanik, Sumit; Sowntharya, L.; Pandey, Deepak; Kar, Kamal K.; Sharma, Shruti

doi:10.1007/978-3-662-49514-8_2

Cited by 12 publications

(8 citation statements)

References 85 publications

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“…As a result of the recent advancements in the field of flexible and wearable electronic devices, flexible energy storage devices are attracting considerable attention. − The existing energy storage devices like Li-ion batteries are less attractive for these applications due to limitations like safety, bulkiness, nonflexibility, and excessive weight. − On the other hand, electrochemical capacitors or supercapacitors emerged as an alternative for these applications. − Supercapacitors utilizing flexible electrodes have received high demand in the scientific community due to their feasible incorporation in the flexible electronic devices. , Not only the electrodes but also the current collector substrates should be flexible to achieve the total flexibility. A prerequisite for a good supercapacitor for flexible application is that the performance of the supercapacitor should not be altered at severe bending and twisting conditions. − Nevertheless, the low energy density of supercapacitors is still a roadblock in many applications.…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Mn₃O₄Nanowalls Grown on Carbon Fibers as Electrodes for Flexible Supercapacitors

2019

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Emerging flexible and wearable electronic devices necessitates the development of fiber-type energy storage devices to power them. Supercapacitors received great attention for applications in flexible and wearable devices due to their scalability, safety, and miniature size. Herein, we report the fabrication of a flexible supercapacitor using manganese(II,III) oxide (Mn 3 O 4 ) nanowalls (NWs) grown by electrochemical deposition on carbon fiber (CF) as electrode-active material. Here, CF serves as both a substrate for the growth of Mn 3 O 4 NWs and a current collector for making a lightweight supercapacitor. Two-dimensional Mn 3 O 4 NWs were uniformly grown on CF with high surface coverage. A three-dimensional nanostructured electrode is obtained using these individual two-dimensional Mn 3 O 4 NWs. The Mn 3 O 4 NWs grown on CF are characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and Raman spectroscopy. A symmetric sandwich-type supercapacitor is fabricated using two-dimensional Mn 3 O 4 NW electrodes in an aqueous 1 M Na 2 SO 4 electrolyte. The Mn 3 O 4 NW supercapacitor electrode exhibits a specific capacitance of 300.7 F g –1 at a scan rate of 5 mV s –1 . The assembled symmetric sandwich-type supercapacitor displayed high flexibility even at a bending angle of 180° without altering its performance. The Mn 3 O 4 NW supercapacitor also displayed a long cycle life of 7500 cycles with 100% capacitance retention.

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Section: Introductionmentioning

confidence: 99%

Two-Dimensional Mn₃O₄Nanowalls Grown on Carbon Fibers as Electrodes for Flexible Supercapacitors

2019

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“…Figure 5c shows a single regime in the conductivity behavior regardless of the frequency range, attributed to AC conductivity. 61 Considering that the AC conductivity behavior is frequency-dependent, it can be described by Jonscher's universal law 62 ( ) n (5) where ω is the angular frequency and the n parameter characterizes a thermally activated hopping across an energy barrier (0 < n < 1). The frequency exponent n is obtained by fitting the experimental data, and its value ranges between 0.85 and 1 for all samples, independently of the filler type and content, which confirms that the conduction mechanism in the samples is dominated mainly by hopping.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, many studies have been focusing on polymer-based composites as they provide exceptional properties in terms of tailorability of the physical−chemical properties and functional response, together with high design flexibility, among others. 4,5 The proper selection of the polymer matrix and fillers, assuring compatibility, is essential to obtain composites with superior performance. Thermoplastic polymers, based on their processability from the melt and from solution, allow the production of complex 3D structures with high structural performance and improved integration.…”

Section: Introductionmentioning

confidence: 99%

“…The performance of these smart materials directly depends on the operating conditions and integration into the devices, which affects both the selection of materials and the manufacturing process. Therefore, many studies have been focusing on polymer-based composites as they provide exceptional properties in terms of tailorability of the physical–chemical properties and functional response, together with high design flexibility, among others. , …”

Section: Introductionmentioning

confidence: 99%

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Multifunctional Ternary Composites with Silver Nanowires and Titanium Dioxide Nanoparticles for Capacitive Sensing and Photocatalytic Self-Cleaning Applications

Tubío

Pereira

Campos-Arias

et al. 2022

ACS Appl. Electron. Mater.

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Multifunctional polymer composites are of increasing interest as they allow tuning of physical–chemical properties for specific applications. A ternary composite material is presented based on the incorporation of titanium dioxide (TiO2) nanoparticles and conductive silver nanowires (AgNWs) into a poly(vinylidene fluoride) (PVDF) polymer matrix. The films were prepared by solvent casting, varying the contents of the filler up to 10 wt %, and showed improved mechanical and dielectric responses and tailorable optical properties. In contrast, the morphology, polymer phase, and thermal stability are nearly independent of the filler type and content within the composite. A dielectric constant of up to 14 at 1 kHz was obtained for the 7.5%AgNWs/2.5%TiO2/PVDF sample. The (multi)functionality of the developed materials is demonstrated for photocatalytic self-cleaning and capacitive sensing applications, indicating the suitability of the approach for next-generation hybrid multifunctional materials.

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“…Equal importance should be given to the selection of electrolytes as it determines the operating voltage window of the supercapacitor. Electrode nanostructuring, hybrid electrode designs using nanocomposite electrodes and HSC configurations are some of the strategies adopted in the recent past for obtaining both high energy and power densities in supercapacitors [45][46][47][48][49][50][51][52]. To achieve this, novel electrode materials and hybrid electrode designs have been developed.…”

Section: Mesoporous Electrode Materialsmentioning

confidence: 99%

Novel mesoporous electrode materials for symmetric, asymmetric and hybrid supercapacitors

et al. 2019

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Electrochemical capacitors or supercapacitors have achieved great interest in the recent past due to their potential applications ranging from microelectronic devices to hybrid electric vehicles. Supercapacitors can provide high power densities but their inherently low energy density remains a great challenge. The high-performance supercapacitors utilize large electrode surface area for electrochemical double-layer capacitance and/or pseudocapacitance. To enhance the performance of supercapacitors, various strategies have been adopted such as electrode nanostructuring, hybrid electrode designs using nanocomposite electrodes and hybrid supercapacitor (HSC) configurations. Nanoarchitecturing of electrode-active materials is an effective way of enhancing the performance of supercapacitors as it increases the effective electrode surface area for enhanced electrode/electrolyte interaction. In this review, we focus on the recent developments in the novel electrode materials and various hybrid designs used in supercapacitors for obtaining high specific capacitance and energy density. A family of electrode-active materials including carbon nanomaterials, transition metal-oxides, transition metal-nitrides, transition metal-hydroxides, electronically conducting polymers, and their nanocomposites are discussed in detail. The HSC configurations for attaining enhanced supercapacitor performance as well as strategies to integrate with other microelectronic devices/ wearable fabrics are also included.

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Polymer-Based Composite Materials: Characterizations

Cited by 12 publications

References 85 publications

Two-Dimensional Mn₃O₄Nanowalls Grown on Carbon Fibers as Electrodes for Flexible Supercapacitors

Two-Dimensional Mn₃O₄Nanowalls Grown on Carbon Fibers as Electrodes for Flexible Supercapacitors

Multifunctional Ternary Composites with Silver Nanowires and Titanium Dioxide Nanoparticles for Capacitive Sensing and Photocatalytic Self-Cleaning Applications

Novel mesoporous electrode materials for symmetric, asymmetric and hybrid supercapacitors

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Polymer-Based Composite Materials: Characterizations

Cited by 12 publications

References 85 publications

Two-Dimensional Mn3O4Nanowalls Grown on Carbon Fibers as Electrodes for Flexible Supercapacitors

Two-Dimensional Mn3O4Nanowalls Grown on Carbon Fibers as Electrodes for Flexible Supercapacitors

Multifunctional Ternary Composites with Silver Nanowires and Titanium Dioxide Nanoparticles for Capacitive Sensing and Photocatalytic Self-Cleaning Applications

Novel mesoporous electrode materials for symmetric, asymmetric and hybrid supercapacitors

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Product

Resources

About

Two-Dimensional Mn₃O₄Nanowalls Grown on Carbon Fibers as Electrodes for Flexible Supercapacitors

Two-Dimensional Mn₃O₄Nanowalls Grown on Carbon Fibers as Electrodes for Flexible Supercapacitors