Materials for Supercapacitors

Kumar, Manoj; Sinha, Prerna; Pal, Tanvi; Kar, Kamal K.

doi:10.1007/978-3-030-52359-6_2

Cited by 20 publications

(21 citation statements)

References 157 publications

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“…Apart from these two types of SC, asymmetric SCs were also developed, which combine both EDLC and pseudocapacitive mechanisms. 104 We discuss these mechanisms of the abovementioned SCs and the SCs fabricated by using MXenebased electrodes in the following paragraphs. Fig.…”

Section: Supercapacitors (Scs)mentioning

confidence: 99%

“…The burden of storing charge is on the electrode. 104 The role of electrolytes is to increase the energy density, power density, and capacitance. Therefore, the performance of SCs depends on the quality of the electrolyte.…”

Section: Supercapacitors (Scs)mentioning

confidence: 99%

“…Electrodes undergo fast and reversible redox reactions when a potential is applied. 104 During the charging process, electrons or ions are transferred between the electrode/electrolyte interface. 105 Different types of faradaic mechanisms are involved in pseudocapacitors, such as intercalation, redox, and underpotential deposition.…”

Section: Supercapacitors (Scs)mentioning

confidence: 99%

“…105 Different types of faradaic mechanisms are involved in pseudocapacitors, such as intercalation, redox, and underpotential deposition. 103,104 In the case of materials, the metal oxides generally show pseudocapacitance behavior. MXenes belong to the carbides and nitrides group, which also show pseudocapacitance behavior.…”

Section: Supercapacitors (Scs)mentioning

confidence: 99%

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Recent progress in energy, environment, and electronic applications of MXene nanomaterials

et al. 2023

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Section: Supercapacitors (Scs)mentioning

confidence: 99%

Section: Supercapacitors (Scs)mentioning

confidence: 99%

Section: Supercapacitors (Scs)mentioning

confidence: 99%

Section: Supercapacitors (Scs)mentioning

confidence: 99%

See 2 more Smart Citations

Recent progress in energy, environment, and electronic applications of MXene nanomaterials

et al. 2023

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“…Thus, the integration of conducting materials is required for any storage application. Carbon materials, metal oxides, and conducting polymers have been extensively employed for the fabrication of SCs. ,− For instance, some examples include the use of MnO 2 thin films for the fabrication of flexible SCs using gel electrolytes, MnO 2 nanowires on activated carbon for all-solid-state SCs, and VO 2 nanosheets electrodes in organic gel electrolytes . Within conducting polymers, polypyrrole (Ppy), polyaniline (PANI), − poly(3,4-ethylenedioxythiophene) (PEDOT), and their derivatives have been extensively used in redox capacitors. − Particularly, PEDOT-based SCs have received great attention in the last few years due to their outstanding electrical properties, in addition to their high specific capacitance, flexibility biocompatibility, acceptable potential window for electrochemical operation, air stability, superior chemical stability in the doped state, and a small band gap. − Most of the aforementioned materials require the use of conductive substrates as ITO or carbon materials as current collectors .…”

Section: Introductionmentioning

confidence: 99%

PEDOT-Based Stackable Paper Electrodes for Metal-Free Supercapacitors

Sappia

Pascual

Azzaroni

et al. 2021

ACS Appl. Energy Mater.

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Paper-based electrodes are promising candidates for energy storage devices due to its availability in nature, low cost, sustainability, intrinsic porosity/fibrous structure, and mechanical properties. In this work, we implemented a straightforward method to control the capacitive response of paper electrodes modified by deposition of PEDOT-polyamine composites. These composite materials were characterized by TGA, SEM-EDS, and Raman spectroscopy, proving the homogeneous functionalization and proper integration of the polymers within the paper microstructure. The electrochemical evaluation by cyclic voltammetry (CV) and galvanostatic charge–discharge curves (GCD) revealed the stable electroactivity of the paper electrodes in a neutral 0.5 M NaCl solution, whereas the introduction of polyamine yielded an enhancement of the capacitive performance. Furthermore, the stacking of paper sheets on a current collector was proved to be an efficient strategy for building electrodes with tunable pseudocapacitance with adequate electrochemical connectivity across the whole architecture. A linear increase in the total capacitance measured by both CV and GCD (60–400 mF/cm2) on the number of stacked PEDOT-modified paper sheets was determined (1–6 sheets). The stacking strategy was comparatively tested using both plastic (PET) and metallic (Au) substrates for preparing the current collectors with similar results and excellent cyclability and capacitance retention (97% after 1000 GCD cycles for three stacked sheets) in 0.5 M NaCl as a harmless and environmentally friendly electrolyte. The stacking of paper sheets modified by polyamine-doped PEDOT coatings constitutes a simple and promissory strategy facing the construction of lightweight metal-free electrodes for harmless supercapacitors in wearable devices.

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Material Design Strategies for Recovery of Critical Resources from Water

et al. 2023

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Population growth, urbanization, and decarbonization efforts are collectively straining the supply of limited resources that are necessary to produce batteries, electronics, chemicals, fertilizers, and other important products. Securing the supply chains of these critical resources via the development of separation technologies for their recovery represents a major global challenge to ensure stability and security. Surface water, groundwater, and wastewater are emerging as potential new sources to bolster these supply chains. Recently, a variety of material‐based technologies have been developed and employed for separations and resource recovery in water. Judicious selection and design of these materials to tune their properties for targeting specific solutes is central to realizing the potential of water as a source for critical resources. Here, the materials that are developed for membranes, sorbents, catalysts, electrodes, and interfacial solar steam generators that demonstrate promise for applications in critical resource recovery are reviewed. In addition, a critical perspective is offered on the grand challenges and key research directions that need to be addressed to improve their practical viability.

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Materials for Supercapacitors

Cited by 20 publications

References 157 publications

Recent progress in energy, environment, and electronic applications of MXene nanomaterials

Recent progress in energy, environment, and electronic applications of MXene nanomaterials

PEDOT-Based Stackable Paper Electrodes for Metal-Free Supercapacitors

Material Design Strategies for Recovery of Critical Resources from Water

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