Flow battery

This describes a flow battery that uses a liquid to store and release energy, circulating it between an electrode and an active material. The liquid contains a special chemical, a tetrathiafulvalene derivative, which acts as an electron mediator. This specific chemical is defined by having chain-forming substituents at particular positions (4,4' and 5,5') on its molecular structure, with further claims detailing its exact chemical formula and composition.

Why it matters: Filed before widespread AI-driven molecular design. Optimizing this specific mediator is now more efficient.

Status: ExpiredProtection ended and was never renewed
How hard to build: SpecializedNeeds chemical synthesis, electrochemistry, fluidics.

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