Journal ArticleDOI
Electrochemical capacitors: mechanism, materials, systems, characterization and applications
TLDR
The latest progress in supercapacitors in charge storage mechanisms, electrode materials, electrolyte materials, systems, characterization methods, and applications are reviewed and the newly developed charge storage mechanism for intercalative pseudocapacitive behaviour is clarified for comparison.Abstract:
Electrochemical capacitors (i.e. supercapacitors) include electrochemical double-layer capacitors that depend on the charge storage of ion adsorption and pseudo-capacitors that are based on charge storage involving fast surface redox reactions. The energy storage capacities of supercapacitors are several orders of magnitude higher than those of conventional dielectric capacitors, but are much lower than those of secondary batteries. They typically have high power density, long cyclic stability and high safety, and thus can be considered as an alternative or complement to rechargeable batteries in applications that require high power delivery or fast energy harvesting. This article reviews the latest progress in supercapacitors in charge storage mechanisms, electrode materials, electrolyte materials, systems, characterization methods, and applications. In particular, the newly developed charge storage mechanism for intercalative pseudocapacitive behaviour, which bridges the gap between battery behaviour and conventional pseudocapacitive behaviour, is also clarified for comparison. Finally, the prospects and challenges associated with supercapacitors in practical applications are also discussed.read more
Citations
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Journal ArticleDOI
Metal–Organic Frameworks (MOFs)
TL;DR: The supercapacitor, the electric double-layer capacitor, and the so-called "reduction and oxidation, redox" technology are all being developed.
Journal ArticleDOI
Latest advances in supercapacitors: from new electrode materials to novel device designs.
Faxing Wang,Faxing Wang,Faxing Wang,Xiongwei Wu,Xiongwei Wu,Xinhai Yuan,Zaichun Liu,Yi Zhang,Lijun Fu,Yusong Zhu,Qingming Zhou,Yuping Wu,Yuping Wu,Wei Huang +13 more
TL;DR: The state-of-the-art progress toward mechanisms, new materials, and novel device designs for supercapacitors is summarized and key technical challenges are highlighted regarding further research in this thriving field.
Journal ArticleDOI
Towards flexible solid-state supercapacitors for smart and wearable electronics
TL;DR: The state-of-the-art advancements in FSSCs are reviewed to provide new insights on mechanisms, emerging electrode materials, flexible gel electrolytes and novel cell designs.
Journal ArticleDOI
Raman spectroscopy of graphene-based materials and its applications in related devices.
TL;DR: The essential Raman scattering processes of the entire first- and second-order modes in intrinsic graphene are described and the extensive capabilities of Raman spectroscopy for the investigation of the fundamental properties of graphene under external perturbations are described.
Journal ArticleDOI
Perspectives for electrochemical capacitors and related devices.
TL;DR: It is shown that new nanostructured electrode materials and matching electrolytes are required to maximize the amount of energy and speed of delivery, and different manufacturing methods will be needed to meet the requirements of the future generation of electronic devices.
References
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Book
Electrochemical Methods: Fundamentals and Applications
Allen J. Bard,Larry R. Faulkner +1 more
TL;DR: In this paper, the authors present a comprehensive overview of electrode processes and their application in the field of chemical simulation, including potential sweep and potential sweep methods, coupled homogeneous chemical reactions, double-layer structure and adsorption.
Journal ArticleDOI
Issues and challenges facing rechargeable lithium batteries
TL;DR: A brief historical review of the development of lithium-based rechargeable batteries is presented, ongoing research strategies are highlighted, and the challenges that remain regarding the synthesis, characterization, electrochemical performance and safety of these systems are discussed.
Journal ArticleDOI
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TL;DR: Researchers must find a sustainable way of providing the power their modern lifestyles demand to ensure the continued existence of clean energy sources.
Journal ArticleDOI
Materials for electrochemical capacitors
TL;DR: This work has shown that combination of pseudo-capacitive nanomaterials, including oxides, nitrides and polymers, with the latest generation of nanostructured lithium electrodes has brought the energy density of electrochemical capacitors closer to that of batteries.
Journal ArticleDOI
A review of electrode materials for electrochemical supercapacitors
TL;DR: Two important future research directions are indicated and summarized, based on results published in the literature: the development of composite and nanostructured ES materials to overcome the major challenge posed by the low energy density.