Solvothermal growth of silver-doped vanadium pentoxide microurchins as a cathode material for all-solid-state asymmetric supercapacitors

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2024, Номер 689, С. 133602 - 133602

Опубликована: Фев. 29, 2024

Язык: Английский

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Advances in Polyvinyl Alcohol-Based Membranes for Fuel Cells: A Comprehensive Review on Types, Synthesis, Modifications, and Performance Optimization

Polymers, Год журнала: 2024, Номер 16(13), С. 1775 - 1775

Опубликована: Июнь 23, 2024

Fuel cell technology is at the forefront of sustainable energy solutions, and polyvinyl alcohol (PVA) membranes play an important role in improving performance. This article thoroughly investigates various varieties PVA membranes, their production processes, numerous modification tactics used to solve inherent problems. Various methods were investigated, including chemical changes, composite blending, introduction nanocomposites. The factors impacting such as proton conductivity, thermal stability, selectivity, investigated provide comprehensive knowledge. By combining research threads, this review aims completely investigate current state fuel applications, providing significant insights for both academic researchers industry practitioners interested efficient conversion technologies. transition from traditional materials Nafion has been prompted by limitations associated with former, complex synthesis procedures, reduced ionic conductivity elevated temperatures, prohibitively high costs, which have hampered widespread adoption. As a result, modern efforts are increasingly focused on creation alternative that can compete conventional technical efficacy economic viability context

Язык: Английский

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Magnetoelectrocatalysis: Evidence from the Hydrogen Evolution Reaction

ACS Physical Chemistry Au, Год журнала: 2024, Номер 4(2), С. 148 - 159

Опубликована: Янв. 3, 2024

Hydrogen evolution reaction (HER) rates are higher where magnetic gradients established at electrode surfaces. In comparison of literature data for metals with comparable work functions, we note 1000× paramagnetic than diamagnetic metals. With unpaired electron spins, and ferromagnetic establish interfacial gradients. At electrodes, induced by addition magnetized microparticles. Onset hydrogen γ-Fe

Язык: Английский

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Redox‐Active Organic Electrode Materials for Supercapacitors

Batteries & Supercaps, Год журнала: 2023, Номер 6(11)

Опубликована: Сен. 1, 2023

Abstract Due to their prominent power density, supercapacitors carve out a niche among all the energy storage systems. However, it is also well known that density of takes no advantage over lithium‐ion batteries, current star device. Therefore, substantial efforts have been paid improving not at expense its density. To develop electrode with high capacitance direct and efficient way increase capability supercapacitors. Organics whose molecular structure can be diversely designed achieve pseudocapacitance arising from redox‐active units in backbone are good candidates as materials for Herein, this review summarizes recent progress organic pseudocapacitive storge mechanisms based on different functional groups. From aspects preparation approaches, design resultant electrochemical performances, focus probe relationship between provide some insights further development supercapacitor electrodes.

Язык: Английский

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Redox kinetics promoted by flower-like La2CoMnO6 @NiCo2O4 heterojunctions for high-performance supercapacitors

Journal of Alloys and Compounds, Год журнала: 2023, Номер 961, С. 171129 - 171129

Опубликована: Июнь 25, 2023

Язык: Английский

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Sulfurization of Electrode Material: A Promising Window for Supercapacitor Technology

Batteries & Supercaps, Год журнала: 2023, Номер 7(1)

Опубликована: Ноя. 22, 2023

Abstract Supercapacitors have emerged as a promising energy storage technology with attributes like high power and tuneable density along splined cyclic potential. Their performance is heavily driven by the employed electrode materials that still crave charge rate capabilities well virile conductivity. Among numerous applied strategies to patch corresponding quandary, sulfurization has garnered significant attention an effective method for improving electrochemical depiction of materials. This review article presents comprehensive analysis process aim providing profound overview latest developments, impact sulfur incorporation on properties, resulting enhancement in supercapacitors. It explores influence sulfidation morphological, structural, compositional aspects materials, highlighting modification surface area, pore size distribution, crystal structure, formation active sites. The discussions improved specific capacitance, enhanced capability, prolonged cycle life, upgraded achieved are accumulated. Additionally, challenges limitations associated mitigate trials future directions research developments.

Язык: Английский

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Exploring the synergy of magnetism and electrocatalysis: a comprehensive review on mechanisms, recent developments and future perspectives

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(36), С. 24005 - 24040

Опубликована: Янв. 1, 2024

Material modifications and magnetic field play a significant role in enhancing the performance of electrocatalyst.

Язык: Английский

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Strategic engineering of NiO/Co3O4/rGO hybrid composite as a cathode material to enhance the electrochemical performance of supercapattery devices

Journal of Energy Storage, Год журнала: 2024, Номер 86, С. 111037 - 111037

Опубликована: Март 26, 2024

Язык: Английский

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Preparation of nitrogen-rich porous carbon by microwave-assisted two-step co-pyrolysis of kapok wood and Chlorella vulgaris

Journal of Analytical and Applied Pyrolysis, Год журнала: 2024, Номер 179, С. 106523 - 106523

Опубликована: Май 1, 2024

Язык: Английский

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Scalable, Flexible, Magnetic-Field-Guided rULGO Sponge-BN-Cobalt Oxide-Based Supercapacitors: Mechanistic Insights into Multiple Charge Transfer Pathways by the Distribution of Relaxation Times

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(34), С. 44665 - 44677

Опубликована: Авг. 16, 2024

Scalable and flexible supercapacitors are in high demand from an application point of view. Through our exploration, we have attained promising performance electrochemical energy storage under the influence external magnetic field for future energy-based applications. In this work, a commercial sponge is used as template ultra-large graphene oxide (rULGO) functionalization, followed by incorporation Co3O4:BN without inclusion binders or conductive additives. The fabricated electrodes, namely, SPG-rULGO SPG-rULGO-Co3O4:BN, demonstrate superior with potential window 2.2 V at strength 13.5 28 mT, respectively. A specific capacitance 218 ± 5% F·g–1 312 F·g–1, respectively, retention rates 80 88% over 5000 charge–discharge cycles achieved. contrast to conventional fabrication asymmetric device, both electrodes made using substrates SPG-rULGO-Co3O4:BN positive electrode negative eliminating need use activated carbon. This configuration yields 153 1 Ag–1, leading density 103 W·h·kg–1 power 1.10 kW kg–1 85% rate. mechanism bare modified probed distribution relaxation time analysis coupled impedance spectra. integration advanced materials opens up other possibilities optimizing systems advancing mechanically robust supercapacitors.

Язык: Английский

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