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2 Vanadium Redox Flow Battery Review Doubling the cell power density would reduce the price per kWh of a 5-hr charge/discharge system significantly [54]. Improving the electrode kinetics not only decreases the cell stack cost, it can also improve the efficiency and SOC window under which the VRFB can operate. Both the improved efficiency and increased SOC reduce the cost per kWh of electrolyte, as the same electrical energy storage capacity can be achieved using less vanadium [85]. Membrane Technology Ion exchange membranes of the Nafion type have been identified as the most expensive component in VRFB, costing $500 m-2 and contributing up to 44 % of overall battery cost [80]. Alternative membranes are being considered, namely SPEEK and size exclusion membranes [20]. Membranes should limit cell resistance, maintain high selectivity to prevent crossover losses and have high durability for long lifespan for thousands of cycles [86]. One option is to add a microporous separator to limit crossover through a 20 micron thick Nafion membrane, this is claimed to maintain good selectivity whilst reducing resistance [87]. Membrane improvements can work synergistically with improved kinetic performance to decrease the cell stack size, increase efficiency and improve the overall economic viability of VRFB. 24PDF Image | Electron Transfer Kinetics in Redox Flow Batteries
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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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