Vanadium redox battery
The vanadium redox battery (VRB), also known as the vanadium flow battery (VFB) or vanadium redox flow battery (VRFB), is a type of rechargeable flow battery that employs vanadium ions in different oxidation states to store chemical potential energy. The vanadium redox battery exploits the ability of vanadium to exist in solution in four different oxidation states, and uses this property to make a battery that has just one electroactive element instead of two. For several reasons, including their relative bulkiness, most vanadium batteries are currently used for grid energy storage, i.e., attached to power plants or electrical grids.
The possibility of creating a vanadium flow battery was explored by Pissoort in the 1930s, NASA researchers in the 1970s, and Pellegri and Spaziante in the 1970s, but none of them were successful in demonstrating the technology.
RE: R&D at Tesla, is projecting $100 per KWH battery packs by next year, which will be perfect for off grid homestead power!
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R&D at Tesla, is projecting $100 per KWH battery packs by next year, which will be perfect for off grid homestead power!
Actually there are six ionic states for Vanaduim, not four. There are practical transportation batteries in Australia since the late 1980's
They are commercially available for power storage at power plants.
https://www.australianvanadium.com.au/vanadium-batteries/
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