Why are there no flow batteries with symmetric ferrocyanide electrolytes?

Glad I finally have a name (flow battery) for a concept that I've been wanting to be made for a long time (liquid batteries).

Cyanide batteries... hmm..

Thank you for this, as somebody with almost no background in chemistry, I can now appreciate just a bit more the complexity that goes into battery development. Where does one learn about this?

To give the answer its the cyanide part... which I knew already when looking at the title, without having much clue about underlying chemistry.

Good luck selling batteries full of some variant of cyanide to general public, i can almost imagine it working till people hear that keyword.

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