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750 0 -750 -1500 -2250 V2+ V3+ + e- GF@TiO2-x:H GF-P GF@TiO2 0 -100 -200 -300 a) -400 -500 V3+ + e- -0.3 -0.2 V2+ GF-P GF@TiO2 I / mA g-1 I / mA g-1 GF@TiO2-x:H -0.9 0.0 0.3 0.6 -0.1 0.0 V3+ + e- V2+ 2H+ + 2e- H2 -0.6 -0.3 b) E vs. NHE / V E vs. NHE / V Figure 6.15. - a) cyclic voltammetry performed for negative half-cell using the as- prepared electrodes in 0.05 M V3+ and 1M H2SO4. Scan rate: 2 mV/s. b) Onset potential obtained from figure a). The origin of the improved electrochemical behaviour can be caused by an increment in electrical donor properties as a consequence of oxygen- vacancies generation in the lattice of the TiO2 after hydrogen treatment. These oxygen-vacancies are known to be electron donors, determining the surface and electronic properties of TiO2201,202, which improve the charge transport in TiO2 as well as the electron transfer at the interface. To demonstrate the enhancement of the electronic properties, the resistance of the electrodes was measured, increasing in the following order: GF@TiO2PDF 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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