PDF Publication Title:
Text from PDF Page: 185
surface towards the negative anthraquinone redox reaction, the charge transfer resistance (Table 7.8) follows the same direction as the reversibility values studied on the electrodes as shown in the cyclic voltammetry (Figure 7.27). 50 40 30 20 10 00 10 20 30 40 50 Re(Z) / Ohm Figure 7.29. – PEIS for the electrodes CF-HT, CF-rGO/Q and CF-rGO/ROH at a fixed potential of 0.15 V vs. NHE, using GF as counter electrode and Hg/Hg2SO4 as reference in a 0.05M Anthraquinone-2,7-disulfonic acid disodium 3 M MeSO3H solution. Table 7.8.- Charge transfer resistance, double layer capacitance and knee frequency values for the electrodes CF-HT, CF-rGO/Q and CF-rGO/ROH. CF-HT CF-rGO/Q CF-rGO/ROH Electrode Rct / Ohm CF-HT CF-rGO/Q CF-rGO/ROH 0.44 0.29 0.30 Thus, treated electrodes are studied in galvanostatic conditions considering charge discharge plots at high current (Figure 7.30a), 200 mA/cm2, overall charge and discharge capacity (mAh) are larger for CF-rGO/Q (0.325) > CF-HT (0.263) > CF- rGO/ROH (0.1). Contrary to the case it is used CF-rGO/Q as cathode electrode, as anode, the capacity is greater for this electrode due to two synergetic effects. First, great amount of oxygen groups, especially C-O and O-C=O groups, enhancing the active surface area over the electrode. Second, the nitrogen groups, especially graphitic and pyrrolic, that helps more active material to be reduced and oxidized. Moreover, this effect can be clearly seen not only in Figure 7.30a, but also in 184 -Im(Z) / OhmPDF 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 | RSS | AMP |