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Lithium iron phosphate (LFP) is a mineral of the olivine family. LFP is one of the materials used as the cathode in a lithium ion battery. The structure of LFP includes Fe(III)O6 octahedra (green) sharing bridged oxygen atoms (red) with tetrahedral phosphate groups (PO4, orange). The channels formed by the interlocking polyhedra are filled with rows of Li(+) ions (gray). (The anode of a lithium ion battery is carbon graphite with intercalated lithium ions. LFP batteries deliver a constant voltage of ~3.2 V over entire life of the battery. They are particularly well-suited for electric vehicles because the high discharge rates for these batteries are need for acceleration. LFP batteries are also lower in weight and have longer lifetimes than other Li ion batteries.

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