Iron(III) chloride

Iron(III) chloride is brownish to black crystalline solid that is highly soluble in water. As a moderately strong Lewis acid, it highly reactive with bases and capable of forming complex ions. It is widely used as a iron precursor in the field of catalysis, solar cells and batteries.

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Iron(III) chloride can be used:

• As a precursor to fabricate nano-sized Fe-N-C catalysts for proton exchange membrane(PEM) fuel cells. FeCl₃ iron precursor, helps to achieve the lowest charge transfer resistance and high peak power density.
• As an oxidant to prepare FeOCl@PPy cathode materials for Li-ion batteries with good cycling stability.
• As a precursor to fabricate amorphous multifunctional am-Fe–Bi/NF electrode for rechargeable Zinc-air batteries.
• To synthesize Fe₃O₄@nanocellulose/TiCl nano fillers for dye-sensitized solar cells to reduce the crystallinity of the polymer.

The vapor-phase co-reductions with other metal halides by hydrogen results in finely divided intermetallics with applications as structural materials or compounds with useful thermoelectric, magnetic, and oxidation-resitance properties.