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Title: Performance evaluation of conductive additives for activated carbon supercapacitors in organic electrolyte
Authors: Jäckel, NicolasWeingarth, DanielSchreiber, AnnaKrüner, BenjaminZeiger, MarcoTolosa Rodriguez, Aura MonserratAslan, MesutPresser, Volker
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Issue Date: 2016
Published in: Electrochimica Acta, Volume 191, Page 284-298
Publisher: Amsterdam : Elsevier
Abstract: In this study, we investigate two different activated carbons and four conductive additive materials, all produced in industrial scale from commercial suppliers. The two activated carbons differed in porosity: one with a narrow microporous pore size distribution, the other showed a broader micro-mesoporous pore structure. Electrochemical benchmarking was done in one molar tetraethylammonium tetrafluoroborate in acetonitrile. Comprehensive structural, chemical, and electrical characterization was carried out by varied techniques. This way, we correlate the electrochemical performance with composite electrode properties, such as surface area, pore volume, electrical conductivity, and mass loading for different admixtures of conductive additives to activated carbon. The electrochemical rate handling (from 0.1 A g−1 to 10 A g−1) and long-time stability testing via voltage floating (100 h at 2.7 V cell voltage) show the influence of functional surface groups on carbon materials and the role of percolation of additive particles.
Keywords: supercapacitor; conductive additive; activated carbon; rate capability performance evaluation; long-time stability
DDC: 540
License: This document may be downloaded, read, stored and printed for your own use within the limits of § 53 UrhG but it may not be distributed via the internet or passed on to external parties.
Dieses Dokument darf im Rahmen von § 53 UrhG zum eigenen Gebrauch kostenfrei heruntergeladen, gelesen, gespeichert und ausgedruckt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
Appears in Collections:Chemie

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