Ingenjörer vid Columbia skapar snabbare metod för utvinning av litium

Forskare vid Columbia Engineering har utvecklat en ny teknik för att utvinna litium från underjordiska saltlösningar snabbare och med mindre miljöpåverkan. Metoden använder ett temperaturkänsligt lösningsmedel och undviker de stora avdunstningsdammar som är vanliga i dagens produktion.

Metoden, som kallas switchable solvent selective extraction eller S3E, fungerar genom att absorbera litium och vatten från saltlösningar vid rumstemperatur. När lösningsmedlet värms upp frigörs renat litium, samtidigt som materialet kan återanvändas. Tester visade utvinningshastigheter som var upp till 10 gånger högre för litium än för natrium och 12 gånger högre än för kalium.

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Chinese scientists showcase breakthrough fluorinated electrolyte lithium battery achieving 700 Wh/kg density and -70°C operation, promising 1,000 km EV ranges.
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Chinese fluorinated electrolyte doubles lithium battery energy density, operates at -70°C

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A joint research team from Nankai University (Tianjin) and the Shanghai Institute of Space Power-Sources has developed a hydrofluorocarbon-based electrolyte for lithium-metal batteries, achieving up to 700 Wh/kg energy density at room temperature—more than double traditional electrolytes—and stable operation down to minus 70°C. Published in Nature on February 27, 2026, the breakthrough promises to double electric vehicle ranges to 1,000 km and has applications in aerospace.

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