| Abstract Scope |
Electrochemical reduction of iron oxides presents a promising low-carbon alternative to traditional carbothermal methods, with potential for significant energy and CO₂ reductions. Hematite and magnetite are attractive feedstocks, but their electroreduction poses electrolyte-dependent challenges.1 In acidic media, iron oxides dissolve readily, but hydrogen evolution reaction (HER) reduces Faradaic efficiency. Alkaline conditions suppress HER and favor iron deposition but suffer from limited oxide solubility. This work introduces a strategy to enhance hematite solubility in basic media by forming soluble iron species, enabling subsequent reduction to metallic iron. We investigate how process conditions impact current density, deposit quality, and efficiency. The presentation will highlight mechanistic insights, performance metrics, and key challenges, offering perspectives on optimizing this sustainable route for iron production.
Acknowledgements: This work was supported by Advanced Research Projects Agency - Energy (ARPA-e) under award DE-AR0001906.
References
(1) Majid, A. I.; et al., Electrochimica Acta 2023, 467, 142942. |