Mining side streams for LFP synthesis toward resilient LiB

Purpose and goal

Lithium Iron Phosphate (LiFePO₄, LFP) is among the most promising electrode (cathode) materials for sustainable energy storage technology utilized in lithium-ion batteries (LiB). The project goal is to evaluate the feasibility of utilizing available and side stream minerals and materials such as iron oxide and phosphoric acid, in LKAB’s mining processes as precursors for synthesizing high value LFP cathode material. The LFP synthesis procedures will be developed in the project.

Expected effects and result

In this project the LFP synthesis protocols will be developed utilizing an available mining product, iron oxide, and a mining side stream, phosphoric acid, as precursors. The feasibility report will include LFP synthesis procedure, characterization and, ultimately, a road map to electrochemical verification results using the project’s LFP cathodes. After the feasibility is established, a full-scale continuation project will be planned.

Planned approach and implementation

LFP is usually synthesized via solid and liquid based methods utilizing the precursors such as lithium source, iron source, phosphorus source and carbon source. Mi4LIT is aimed to evaluate and optimize battery precursors, such as phosphoric acid and iron-precursor from the mineral tailings of LKAB to synthesize LFP. LKAB together with RISE will lead development of LFP material. Perkin Elmer, Excillum and RISE will provide all necessary advanced material characterization to verify LFP quality.