Monomer Self‐Deposition for Ordered Mesoporous Carbon for High‐Performance Supercapacitors

Du, Jiangfeng; Liu, Lei; Yu, Yan; Zhang, Yue; Chen, Aibing

doi:10.1002/cssc.201900595

Cited by 17 publications

(1 citation statement)

References 53 publications

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“…Du et al [ 132 ] prepared ordered mesoporous carbons (OMCs) by converting phenol monomers to mesoporous carbons. OMC was prepared by magnetic deposition according to the solid-phase grinding method, and the obtained OMC replicated the morphology of the template and exhibited a high surface area, large pore volume, and a uniform mesoporous structure.…”

Section: Introductionmentioning

confidence: 99%

Recent Advanced Supercapacitor: A Review of Storage Mechanisms, Electrode Materials, Modification, and Perspectives

et al. 2022

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In recent years, the development of energy storage devices has received much attention due to the increasing demand for renewable energy. Supercapacitors (SCs) have attracted considerable attention among various energy storage devices due to their high specific capacity, high power density, long cycle life, economic efficiency, environmental friendliness, high safety, and fast charge/discharge rates. SCs are devices that can store large amounts of electrical energy and release it quickly, making them ideal for use in a wide range of applications. They are often used in conjunction with batteries to provide a power boost when needed and can also be used as a standalone power source. They can be used in various potential applications, such as portable equipment, smart electronic systems, electric vehicles, and grid energy storage systems. There are a variety of materials that have been studied for use as SC electrodes, each with its advantages and limitations. The electrode material must have a high surface area to volume ratio to enable high energy storage densities. Additionally, the electrode material must be highly conductive to enable efficient charge transfer. Over the past several years, several novel materials have been developed which can be used to improve the capacitance of the SCs. This article reviews three types of SCs: electrochemical double-layer capacitors (EDLCs), pseudocapacitors, and hybrid supercapacitors, their respective development, energy storage mechanisms, and the latest research progress in material preparation and modification. In addition, it proposes potentially feasible solutions to the problems encountered during the development of supercapacitors and looks forward to the future development direction of SCs.

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Section: Introductionmentioning

confidence: 99%

Recent Advanced Supercapacitor: A Review of Storage Mechanisms, Electrode Materials, Modification, and Perspectives

et al. 2022

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Sulfonated Hollow Silica Spheres as Electrolyte Store/Release Agents: High‐Performance Supercapacitor Applications

et al. 2019

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Sulfonated hollow silica spheres (HSS‐S) are synthesized and applied in supercapacitors as acid‐filling and acid‐releasing agents in a polymer matrix, thanks to their unique architecture wherein the hollow spheres can be filled with acid (HSS‐S‐F) and can be dispersed in poly(vinyl alcohol) (PVA) with various weight fractions to produce nanocomposite gel polymer electrolytes (GPEs), HSS‐S/PVA, and HSS‐S‐F/PVA. The symmetrical supercapacitor device is assembled using an active carbon(AC) electrode and the GPE HSS‐S‐F/PVA shows a specific capacitance value of 147 F g−1 at 0.5 A g−1. Alternatively, the GPE HSS‐S/PVA shows a specific capacitance of 52 F g−1 at the same current density. The symmetrical supercapacitor based on HSS‐S‐F/PVA has a high‐energy density of 20.40 W·h kg−1 at a power density of 545 W kg−1 with a remarkable cyclic stability with a loss of only 15% after 2250 charge–discharge cycles. This excellent property demonstrates that HSS‐S is a promising additive and has the potential to produce more efficient energy storage devices by changing the hollow particle size, pore size, and using different host polymer electrolytes.

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High‐Performance Aqueous Supercapacitors Based on Biomass‐Derived Multiheteroatom Self‐Doped Porous Carbon Membranes

et al. 2020

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Porous carbons derived from widely accessible, renewable, and low‐cost biomass are being extensively pursued as biocompatible electrode materials for next‐generation supercapacitors (SCs), but their practical application is being largely restricted by insufficient performance related to their powdery status. Herein, a porous carbon membrane (denoted as lettuce‐derived carbon membrane [LCM]) is developed by direct and controllable carbonization of biomass lettuce. By taking the advantages of the inherent microstructure and composition of the lettuce, the as‐fabricated LCM electrode is endowed with a large specific surface area, interconnected hierarchical pores, and multiheteroatom (N, P, and S) doping. The benefits originating from the structure synergy provide this LCM electrode excellent electrochemical performance in an aqueous symmetric SC, exhibiting a high specific capacitance of 213.4 F g−1 at 0.2 A g−1, outstanding rate capability (78.6% capacitance retention at 10 A g−1), and superior cycling stability (96.9% capacitance retention after 100 000 cycles at 5 A g−1) and unit Coulombic efficiency. Notably, the LCM‐based SC delivers the highest energy density of 7.41 Wh kg−1 with a power density of 50.4 W kg−1 at 0.2 A g−1. This device‐compatible porous carbon membrane can be applied to other advanced energy‐storage and conversion devices with a high electrochemical performance.

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Monomer Self‐Deposition for Ordered Mesoporous Carbon for High‐Performance Supercapacitors

Cited by 17 publications

References 53 publications

Recent Advanced Supercapacitor: A Review of Storage Mechanisms, Electrode Materials, Modification, and Perspectives

Recent Advanced Supercapacitor: A Review of Storage Mechanisms, Electrode Materials, Modification, and Perspectives

Sulfonated Hollow Silica Spheres as Electrolyte Store/Release Agents: High‐Performance Supercapacitor Applications

High‐Performance Aqueous Supercapacitors Based on Biomass‐Derived Multiheteroatom Self‐Doped Porous Carbon Membranes

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