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The impact of having an oxygen-rich microporous surface in carbon electrodes for high-power aqueous supercapacitors

Journal of Energy Chemistry 2021年第2期30卷 36-48,I0002页

作者： Servann Herou Maria Crespo Ribadeneyr philipp schlee Hui Luo Liviu Cristian Tanase Christine Roβberg Magdalena Titirici Chemical Engineering Department Imperial College LondonImperial College RdKensingtonLondon SW72AZUK National Institute of Materials Physics Atomiştilor 405A077125 Măgurele–IlfovRomania Fraunhofer-Zentrum für Chemisch-Biotechnologische Prozesse CBP Am Haupttor06237 LeunaGermany

The growth of electrical transportation is crucially important to mitigate rising climate change concerns regarding materials *** are high-power devices,particularly suitable for public transportation since they can easily store breaking energy due to their high-rate charging ***,they can function with two carbon electrodes,which is an advantage due to the abundance of carbon in biomass and other waste materials(i.e.,plastic waste).Newly developed supercapacitive nanocarbons display extremely narrow micropores(100 kW kg^(-1)),using fourty times less activating agent than traditionnal chemically activated *** also demonstrate that the affinity between the carbon and the electrolyte is of paramount importance to maintain rapid ionic diffusion in narrow ***,this facile synthesis method shows that low-cost and bio-based free-standing electrode materials with reliable supercapacitive performances can be used in electrochemistry.

关键词： Porous carbon materials Lignin Supercapacitors Oxygen groups

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Electrospinning as a route to advanced carbon fibre materials for selected low-temperature electrochemical devices:A review

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Journal of Energy Chemistry 2021年第8期30卷 492-529,I0011页

作者： Yue Wen Matt D.R.Kok Jorge Pavel Victoria Tafoya Ana BJorge Sobrido Ellsworth Bell Jeff T.Gostick Servann Herou philipp schlee Maria-Magdalena Titirici Dan J.L.Brett Paul R.Shearing Rhodri Jervis The Electrochemical Innovation Lab Dept.of Chemical EngineeringUniversity College LondonTorrington PlaceWC1E 7JE LondonUK Queen Mary University of London School of Engineering and Materials ScienceMile End RoadE14NS LondonUK Department of Chemical Engineering University of WaterlooWaterlooCanada Department of Chemical Engineering Imperial College LondonSouth Kensington CampusSW72AZ LondonUK

Electrospinning has been proven as a highly versatile fabrication method for producing nano-structured fibres with controllable morphology,of both the fibres themselves and the void structure of the ***,it is possible to use heteroatom doped polymers or to include catalytic precursors in the electrospinning solution to control the surface properties of the *** factors make it an ideal method for the production of electrodes and flow media for a variety of electrochemical devices,enabling reduction in mass transport and activation overpotentials and therefore increasing ***,the use of biomass as a polymer source has recently gained attention for the ability to embed sustainable principles in the materials of electrochemical devices,complementing their ability to allow an increase in the use of renewable electricity via their *** this review,the historical and recent developments of electrospun materials for application in redox flow batteries,fuel cells,metal air batteries and supercapacitors are thoroughly reviewed,including an overview of the electrospinning process and a guide to best ***,we provide an outlook for the emerging use of this process in the field of electrochemical energy devices with the hope that the combination of tailored microstructure,surface functionality and computer modelling will herald a new era of bespoke functional materials that can significantly improve the performance of the devices in which they are used.

关键词： Electrospinning Redox flow batteries Fuel cells Metal-air batteries Supercapacitors

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