Role in Lithium-Ion Batteries
Phosphorus enters the battery value chain as phosphate (PO₄³⁻), bonding with iron and lithium to form lithium iron phosphate (LiFePO₄, LFP) — one of the most important cathode chemistries. The olivine crystal structure of LFP provides exceptional thermal stability and resistance to thermal runaway. Unlike NMC or NCA, LFP releases no oxygen under stress, making it the chemistry of choice for safety-critical applications.
LFP's resurgence: LFP accounted for over 40% of global EV battery installations in 2023. Its longer cycle life (3,000–5,000+ cycles), superior safety, and lower cost have made it dominant for grid storage and cost-competitive EVs.
Domestic Supply
The United States is a significant global phosphate producer — primarily from Florida's Central Florida Phosphate District and North Carolina. American mines produce tens of millions of tonnes annually, largely for fertilizer markets. The key challenge is converting this agricultural-grade phosphate into battery-grade phosphoric acid and iron phosphate precursors needed for LFP manufacturing.
The American opportunity: Pairing domestic phosphate with American iron ore creates the opportunity for a fully American LFP cathode supply chain — two of the most domestically abundant battery minerals combined.