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Iron flies higher

Electrolyte materials that consist of metals with organic ligands represent a promising direction for flow battery research. Now, an iron complex with the combination of bipyridine and cyanide ligands is demonstrated to have improved voltage and solubility over the commonly used ferrocyanide couple.

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Fig. 1: An improved catholyte.


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Correspondence to Michael P. Marshak.

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Competing interests

Michael Marshak is the founder of OTORO Energy Inc., which seeks to commercialize metal–organic flow battery chemistries.

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Marshak, M.P. Iron flies higher. Nat Energy 6, 854–855 (2021).

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