This startup wants to make more climate-friendly metal in the US
technologyreview.comPublished: 5/28/2025
Summary
Break into sustainable magnesium production with Magrathea’s innovative process, which modernizes an older electrolyzer method while integrating heat for energy efficiency and CO2 capture. By running the electrolyzer hotter than necessary, they harness extra heat to dry magnesium salt and even trap carbon dioxide, aiming for net-zero emissions in the future. However, breaking this down into a production line presents challenges that require careful planning and engineering.