What is a Iron phosphate (FePO₄)?

Iron phosphate (FePO₄) is an inorganic compound composed of iron and phosphate, typically appearing as dark green or brown crystals. It is used in a variety of fields, especially in environmental protection and agriculture. In agriculture, iron phosphate is commonly used as an organic fertilizer or soil amendment to supply iron to iron-deficient soils. Iron is an essential nutrient for plants, particularly for chlorophyll synthesis. A deficiency in iron can cause chlorosis, where leaves turn yellow, but iron phosphate can alleviate this issue.

Iron phosphate is also used in battery materials, particularly in lithium-ion batteries. Lithium iron phosphate (LiFePO₄) is used as a cathode material in lithium-ion batteries, improving their safety, longevity, and tolerance to overcharging and overdischarging. Furthermore, iron phosphate is utilized in environmental remediation, such as water purification and soil decontamination, where it helps remove heavy metals and other pollutants.

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