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S.Vaquero, J.Plama, M.A. Anderson, R.Marcilla. Role of textural properties and surface functionalities of carbons in the performance of EDLCs.1st International Forum on Progress and Trends in Battery and Capacitor Technologies.Vitoria (Spain).March 19-21, 2012

 

Abstract:

In the present study, we report the microstructural characterization and the electrochemical performance of several carbons with varied textural properties. Carbons were investigated in terms of specific surface area, pore size distribution, surface functionalization and electrochemical behavior in acidic, neutral and organic electrolytes. N2 adsorption-desorption isotherms , thermogravimetric analysis (TGA), infrared spectroscopy (FT-IR) and cyclic voltammetry (CV) techniques were used for the characterization of the carbons. Electrochemical properties of electric double- layer capacitors (EDLCs) based on these carbons were investigated by galvanostatic charge-discharge and electrochemical impedance spectroscopy (EIS). Special attention is paid in this study to bring into comparison the capacitance values of different carbons emphasizing the crucial role of textural properties, surface functionalization and selected electrolyte on the obtained electrochemical properties. Experimental results indicate that mesoporous carbons of high surface area are promising materials for high power applications, whereas microporous carbons with higher specific capacitances would be preferred for high energy and medium power applications.

 

Link to the conference: Forum on Progress and Trends in Battery and Capacitor Technologies

 

 

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Project acronym:
HESCAP

Project name:
 New Generation, High Energy and Power Density Supercapacitor Based Energy Storage System


Project reference:
FP7-ENERGY-214405

Start date: 01/04/2010
End date: 30/09/2013



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