PDF Publication Title:
Text from PDF Page: 050
electrode. Nitrogen gas is used to deoxygenate the electrolyte. Electrochemical measurements were done with a Biologic® VMP-3 multi- potentiostat controlled by EC-lab® software. The electrocatalytic properties of the all electrodes towards positive reactions, as well as negative reactions in aqueous organic redox flow batteries were measured by cyclic voltammetry (CV) at different scan rate in 0.05 M active material and 3 M MeSO3H.c Electrochemical impedance spectroscopy (EIS) spectra containing 0.05 M of quinone species in 3 M methanosulfonic acid was done at a frequency from 100 mHz to 200 kHz. Moreover, Randles-Sevcik equation is used to obtain not only the mass transfer relationship, but also the apparent constant coefficient using in both cases the same experimental conditions as CV. Last, but not least treated electrodes are studied in galvanostatic conditions using Hg/Hg2SO4 reference electrode and a much larger area of GF-P as a counter electrode in 0.05 M Tiron and 3 M MeSO3H. into a 0.05M quinone solution in 3M methanosulfonic acid at different current densities, from 2.5 to 75 mAcm-2, in order to study their capacity and efficiency performance towards the aqueous organic redox reactions.. 3.4.1 Rotating disk set-up A three-electrode glass cell is used to do fundamental electrochemical studies (Figure 3.6). Deposited Glassy Carbon (GC; 0.196 cm2) is used as working electrodes, platinum wire as counter electrode, and Hg/Hg2SO4 as reference electrode. Nitrogen gas is used to deoxygenate the electrolyte. Electrochemical measurements were carried out with a Biologic® VMP-3 multi-potentiostat controlled by EC-lab® software. The electrocatalytic reaction of the all electrodes towards positive reaction in VRFB is measured by cyclic voltammetry (CV) between cut-off voltages of 1.4 and -1 V at different scan rates (50-1 mVs-1) in 0.5 M VO2+ and 3 M H2SO4, in order to apply the Randles-Sevcik equation (seen Appendix equation (9.54)) to obtain the diffusion coefficient. Moreover, in order to get the kinetic constant values applying Koutecký-Levick equation (seen Appendix 9.3.1.1). It is done a linear sweep voltammetry changing the working electrode (GC) rotation speed (100-2500 rpm), between 0.3 and 1.1 V at 5 mVs-1 scan speed. 49PDF Image | Redox Flow Batteries Vanadium to Earth Quinones
PDF Search Title:
Redox Flow Batteries Vanadium to Earth QuinonesOriginal File Name Searched:
FJVG_TESIS.pdfDIY PDF Search: Google It | Yahoo | Bing
Salgenx Redox Flow Battery Technology: Salt water flow battery technology with low cost and great energy density that can be used for power storage and thermal storage. Let us de-risk your production using our license. Our aqueous flow battery is less cost than Tesla Megapack and available faster. Redox flow battery. No membrane needed like with Vanadium, or Bromine. Salgenx flow battery
CONTACT TEL: 608-238-6001 Email: greg@salgenx.com (Standard Web Page)