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Docket #: S22-521

Electrochemical Conversion of Lithium Precursors to Lithium Products

Stanford researchers in the Cargnello Lab have developed a new energy efficient method of converting lithium precursors, such as lithium chloride or lithium sulfate, to battery-ready lithium products, such as lithium hydroxide or lithium carbonate. The proposed flow through method improves upon current state-of-the-art lithium conversion techniques by eliminating energy-intensive solubility-based crystallization approaches commonly employed today. This process will reduce the cost, carbon footprint, and energy requirement of lithium precursor production for batteries.

Figure:

Image credit: Inventors

Stage of Development

  • Proof of concept
  • Process tested at lab scale
  • Applications

    • Battery recycling applications
    • Water purification method in areas with high lithium contamination (e.g. battery plant waste streams, water bodies near battery plants, etc.)
    • Conversion of lithium chloride to lithium carbonate or lithium hydroxide form

    Advantages

    • Cheaper conversion of lithium chloride to lithium hydroxide with fewer reagents and less energy required.
    • Sustainable, fully electrified lithium conversion process.
    • Improves upon current techniques which are inefficient and low yield

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