The lack of grid-scale energy storage is hindering the incorporation of more renewable energy generation. As such there has been significant interest in less expensive battery designs. Although traditional Li-ion batteries have been deployed in markets with higher utility costs (So Cal, Hawaii), substantial deployment and impact will likely result only if significant cost reduction is achieved. One technology that might fit this need is a redox flow battery, where the energy is stored in a redox reaction between dissolved molecular species, not in the electrode. The bulk of RFB research is focused on redox carriers that function in aqueous environments since water is essentially free. The inexpensive medium, however, comes at a cost – reduced cell potential, limited to ~2.4V under the proper conditions. Our group, along with many others, are attempting to design new redox carriers for nonaqueous solvents to enable larger cell potentials. In this talk I saw describe modifications to the nickel picolinamide complexes that achieve this goal.

Expanding cell potential of metal picolinamide redox carriers for flow cell applications

2019 Fall National Meeting

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