ArticleThe journal of physical chemistry. C, Nanomaterials and interfaces2024
Electrowinning for Room-Temperature Ironmaking: Mapping the Electrochemical Aqueous Iron Interface.
Article in The journal of physical chemistry. C, Nanomaterials and interfaces, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Climate Action Impacts on Steelmaking Emissions of Persistent Organic Pollutants Highlight a Gap Between the Paris Agreement and the Stockholm Convention.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Recovery of metallic iron from the loaded organic phase after solvent extraction by precipitation-stripping with hydrogen gas.RSC advances · 2026Article
- Stepwise Recycling of Red Mud Through Electrochemical Activation for Enhanced Cementitious Performance and Magnetically Separable Iron Recovery.Materials (Basel, Switzerland) · 2026Article
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A promising route toward room-temperature ironmaking is electrowinning, where iron ore dissolution is coupled with cation electrodeposition to grow pure iron. However, poor faradaic efficiencies against the hydrogen evolution reaction (HER) is a major bottleneck. To develop a mechanistic picture of this technology, we conduct a first-principles thermodynamic analysis of the Fe110 aqueous electrochemical interface. Constructing a surface Pourbaix diagram, we predict that the iron surface will always drive toward adsorbate coverage. We calculate theoretical overpotentials for terrace and step sites and predict that growth at the step sites are likely to dominate. Investigating the hydrogen surface phases, we model several hydrogen absorption mechanisms, all of which are predicted to be endothermic. Additionally, for HER we identify step sites as being more reactive than on the terrace and with competitive limiting potentials to iron plating. The results presented here further motivate electrolyte design toward HER suppression.
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Registered trials
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