Battery-Supercapacitor Hybrid Devices: Recent Progress and Future Prospects.
TL;DR: The fundamental scientific principle, structure, and possible classification of Battery‐supercapacitor hybrid device (BSH) are addressed, and the recent advances on various existing and emerging BSHs are reviewed, with the focus on materials and electrochemical performances.
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Abstract: Design and fabrication of electrochemical energy storage systems with both high energy and power densities as well as long cycling life is of great importance. As one of these systems, Battery-supercapacitor hybrid device (BSH) is typically constructed with a high-capacity battery-type electrode and a high-rate capacitive electrode, which has attracted enormous attention due to its potential applications in future electric vehicles, smart electric grids, and even miniaturized electronic/optoelectronic devices, etc. With proper design, BSH will provide unique advantages such as high performance, cheapness, safety, and environmental friendliness. This review first addresses the fundamental scientific principle, structure, and possible classification of BSHs, and then reviews the recent advances on various existing and emerging BSHs such as Li-/Na-ion BSHs, acidic/alkaline BSHs, BSH with redox electrolytes, and BSH with pseudocapacitive electrode, with the focus on materials and electrochemical performances. Furthermore, recent progresses in BSH devices with specific functionalities of flexibility and transparency, etc. will be highlighted. Finally, the future developing trends and directions as well as the challenges will also be discussed; especially, two conceptual BSHs with aqueous high voltage window and integrated 3D electrode/electrolyte architecture will be proposed.
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Citations
Hydrothermal Synthesis of Cobalt Vanadium Oxide (Co3V2O8) Hexagonal Disc for High-Performance Supercapacitors
A.A. Jadhavar,N.T. Shelke,M.A. Yewale,Rupali Ashok Kadam,S.L. Kadam,D.K. Shin +5 more
TL;DR: Researchers synthesized Co3V2O8 via hydrothermal method, achieving high-performance supercapacitors with specific capacitance of 224-241 F/g, energy density of 3.79-4.99 Wh/kg, and power density of 77.62-80.42 W/kg.
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Foivos Markoulidis,Nadia Todorova,Rossana Grilli,Constantina Lekakou,Christos Trapalis +4 more
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TL;DR: In this article, the authors investigated composite coatings as electrodes for supercapacitors with organic electrolyte 1.5 M TEABF4 in acetonitrile and found that the coating improved the electrical conductivity and reduced the contact resistance between the composite electrode and current collector.
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Hybrid electrochemical supercapacitor based on birnessite-type MnO2/carbon composite as the positive electrode and carbonized iron-polyaniline/nickel graphene foam as a negative electrode
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TL;DR: Strategies for advanced supercapacitors based on 2D transition metal dichalcogenides involve optimizing materials and devices for high performance. The focus includes doping, morphology, structure and phase, composites, hybrids, and electrolyte optimization. Further research is needed to address challenges and achieve competitive electrochemical performance.
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