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<p>Various methods focused on the efficiency and suitability for lithium separation and recovery, often involving complex processes and high environmental risks. The electromigration process has proved to be promising when combined with selective membranes. Lithium has a rather low melting point and increased diffusivity; its presence within metallic interconnecting links increases the atoms’ mobility, providing faster diffusion rates under high current densities. A lithium-impregnated membrane can operate as a diffusion barrier or a settling agent. This preliminary study highlighted a membrane’s critical role in the lithium separation. Results demonstrated substantial variation in lithium uptake across membranes, with Nafion EC-NM212 targeting the highest uptake of 6570 and 6631.8&#xa0;µg/g Li, respectively. The other membranes (LDPE, FS-930, and PP) exhibited lower lithium uptake, indicating limited efficacy for lithium separation. This research established a strong foundation to improve lithium recovery rates and opened the way to optimize electromigration processes in lithium isotope separation.</p> Graphical abstract <p></p>

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Lithium-enriched organic membranes for future enhanced electromigration performance

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年6月4日

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  • Nadia Paun,
  • Ramona Ionela Zgavarogea,
  • Andreea Maria Iordache,
  • Erdin Feizula,
  • Violeta-Carolina Niculescu

摘要

Various methods focused on the efficiency and suitability for lithium separation and recovery, often involving complex processes and high environmental risks. The electromigration process has proved to be promising when combined with selective membranes. Lithium has a rather low melting point and increased diffusivity; its presence within metallic interconnecting links increases the atoms’ mobility, providing faster diffusion rates under high current densities. A lithium-impregnated membrane can operate as a diffusion barrier or a settling agent. This preliminary study highlighted a membrane’s critical role in the lithium separation. Results demonstrated substantial variation in lithium uptake across membranes, with Nafion EC-NM212 targeting the highest uptake of 6570 and 6631.8 µg/g Li, respectively. The other membranes (LDPE, FS-930, and PP) exhibited lower lithium uptake, indicating limited efficacy for lithium separation. This research established a strong foundation to improve lithium recovery rates and opened the way to optimize electromigration processes in lithium isotope separation.

Graphical abstract