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S.Vaquero, J.Palma, M.A. Anderson, R. Marcilla.Role of textural properties and surface functionalities of carbons in the performance of EDLCs. The 63rd Annual Meeting of the International Society of Electrochemistry

Prague (Czech Republic).19-24 August, 2012

 

 

Abstract:

Different types of supercapacitors are commonly described in literature, depending on the active material used: activated carbons (ACs), metal oxides, conducting polymers, etc. Electrochemical double layer capacitors (EDLCs) based on activated carbons electrodes are the most extensively studied because of the outstanding properties of activated carbons, which include good conductivity and stability, high attainable surface area and low cost. Here, we report the microstructural characterization and the electrochemical performance of several carbons with varied textural properties and surface functionalities. 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: The 63rd Annual Meeting of the International Society of Electrochemistry

 

 

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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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