Chemisting

If you have looked into flow batteries for any length of time, you will have found that the ferrocyanide/ferricyanide redox couple ( Fe(CN)6 4, Fe(CN)6 3) is one of the most widely used in the field. This is because this redox couple has very high redox s

On a previous post I discussed my first attempts at reproducing the Na-sulfamate based Zn-Br battery published by a group of Chinese researchers. My results showed that the chemistry works mostly as they showed, but I was unable to reproduce both the capa

A recent Chinese Nature paper showed how Sodium sulfamate can be used in Zn-Br batteries to sequester active Br2 into an N-bromosulfamate that is much less aggressive, much more water soluble and even more easily electrochemically reversible than elementa

Zinc bromide flow batteries have been researched very extensively during the past 30 years. There are many advantages to this chemistry, very high potential (1.8V), high efficiencies, symmetric electrolyte and low reagent costs. Nonetheless, the disadvant

Flow batteries are promising for renewable energy storage due to their safety and scalability. Zinc/bromine flow batteries (Zn/Br) are popular due to their high energy densities and inexpensive electrolytes. However, they have a poor service life and lead

All-Fe flow batteries are very promising due to iron's high abundance, low toxicity and low cost. In these batteries, FeCl2 is used as the main active salt in solution. When charging Fe2+ gets reduced to Fe metal on the anode while Fe2+ gets oxidized to F