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0.6 0.4 0.2 0.0 -0.2 -0.4 b) 0.4 0.2 0.0 -0.2 -0.4 a) E vs. Ag/Ag2SO4 / V E vs. Ag/Ag2SO4 / V 0 Ecell Ewe Ece 1000 2000 3000 4000 time / s 0 Ecell Ewe Ece 3000 6000 9000 12000 time / s 15000 18000 10 mA/cm2 Figure 7.35. - a) Single cell several charge-discharge plot of the potential of the cell vs. time for the working, counter and the difference between these two electrodes at a current density of 10 mA/cm2. b) inset caption of one of the previous cycles. Therefore, while cycling the battery it is possible to follow the charge and discharge of both compartments independently, as seen in Figure 7.35. A 10 mA/cm2 current density is applied with a lower cut of potential, up to 0.5 V, to avoid side reactions and cross-over within the cell. Focusing now on the plots, while charging the cell it is obvious an oxidation is happening on the positive side, p-hydroxibenzene as initial molecule solved is reacting to form p-benzoquinone. Similarly, on the negative side there is a reduction occurring, the initial sodium 9,10-anthraquinone- 2,7-disulfonate is reduced to its enol form (sodium 9,10-dihydroanthracene-2,7- disulfonate). Deducting from the plot, it can be clearly seen that the negative reaction acts as a limiting factor in the overall single-cell charge, and as a consequence the positive reaction limits the discharge of the battery. Analyzing in deep these results, it can be found a plausible explanation to the negative reaction as limiting factor, which is the faster kinetics considering the same quantity of 191PDF Image | Redox Flow Batteries Vanadium to Earth Quinones
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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
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