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090			_aB-11789
245	1	0	_aImpedance of carbon aerogel/activated carbon composites as electrodes of electrochemical capacitors in aprotic electrolyte
490	0		_vNew Carbon Materials, 22(2), p.153-158, 2007
520	3		_aCarbon aerogel (CAG), carbon black (CB), and graphite (G)were added to a high surface area activated carbon (HSAC), prepared by KOH activation, to form composites for use as electrodes of electrochemical capacitors (ECs). The performance of the ECs using these electrodes in (C2H5)4NBF4/propylene carbonate electrolyte were analyzed and compared by an electrochemical impedance spectrum (EIS). An equivalent circuit model with mixed kinetic and charge transfer control was assumed and a Marquardt fit procedure was applied to the EIS data, from which model parameters, such as, series solution resistance, Rs, polarization resistance, Rp, Nernst diffusion layer thickness, .., and average value of the diffusion coefficients of electrolyte ions, D, were extracted and compared for CAG-, CB-, and G-based composites. It was found that the ECs using CAG had the highest D values and a comparable Rp value with CB. The CAG-based composite had the lowest resistance and highest capacitance at the same frequencies among the three types of composites investigated.
650	1	4	_aCARBON AEROGEL
650	1	4	_aACTIVATED CARBON
650	1	4	_aELECTRIC DOUBLE LAYER CAPACITOR
650	1	4	_aCAPACITANCE
650	1	4	_aIMPEDANCE
700	1	2	_aLiu X.
700	1	2	_aZhang R.
700	1	2	_aZhan, L.
700	1	2	_aLong, D.
700	1	2	_aQiao, W.
700	1	2	_aYang, J.
700	1	2	_aLing, L.
856	4	0	_uhttps://drive.google.com/file/d/1Yftz_pLmOgeKuw7GSA1I6JPVM98bxqU4/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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