PDF Publication Title:
Text from PDF Page: 146
Thus, we wanted to verify the low self-discharge of the cell in static conditions and how the different electrodes behave. For that purpose, it was measured the OCV of the cell during 18 hours after charging at low current density (25 mA/cm2). Looking at the Figure 6.48, we can elucidate when both electrodes are enhanced not only preserve better its potential during this period, but also has an initial greater value of open circuit voltage. It is followed by only one improved electrode, positive electrode covered by CeO2. Both shows better stability than the case of pristine electrodes, where the OCP decays rapidly. It is an evidence of the really low self-discharge of this kind of technology. 1.70 1.65 1.60 1.55 1.500 4 8 12 16 time / h Figure 6.48. – Self-discharge process from a totally charged battery through time for different electrodes. Afterwards, it is done a long term stability for the electrodes that shows a better performance, in particular the case of GF@TiO2:H (-) vs. GF@CeO2-x (+). We have cycled for 100 times at 200mA/cm2 obtaining a 52% EE and 98.5% CE as well as an initial capacity of 12 AhL-1, which degenerates until a 76% of the initial capacity. After this 100 cycles our cell is capable of last over other 60 cycles at 150 mA/cm2 before experiment a capacity fading (below 62% of the initial capacity, from 13 to 8 AhL-1) as we observe in the Figure 6.49. The EE and CE remains over these cycles around 58 and 98 % respectively. These electrodes enhance our battery performance allowing going up to 150 cycles easily without degradation, because of the reasons mentioned before our battery could be an advantageous choice for commercial application. GFpristine (-) vs. GFpristine (+) GFpristine (-) vs. GF@CeO2 (+) GF@TiO2:H (-) vs. GF@CeO2-x (+) 145 E/VPDF 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)