Lithium iodide

Lithium iodide is an ionic compound composed of lithium cations and iodide anions. It is typically a white crystalline solid and dissolves readily in water.

Lithium: Lithium is the lightest metal and the chemical element with atomic number 3. Lithium atoms form the positive ions in lithium iodide.
Dissolution: Dissolution is the dispersal of a solute into a solvent to form a solution. Water separates the lithium and iodide ions from the crystal.
Lithium-ion battery: A lithium-ion battery stores and releases energy through reversible lithium-ion movement between electrodes. Lithium iodide has been studied as an electrolyte additive in some battery systems.
Lithium chloride: Lithium chloride is an ionic compound composed of lithium cations and chloride anions. Its smaller chloride ion gives the salt different lattice and hydration behavior.
Iodine: Iodine is a halogen element with atomic number 53. Iodine becomes iodide, the negative ion paired with lithium.
Hydration: Hydration is the association of water molecules with dissolved ions or molecules. Water molecules surround Li⁺ and I⁻ after the salt dissolves.
Dye-sensitized solar cell: A dye-sensitized solar cell converts light to electricity using a dye, a semiconductor, and a redox electrolyte. Lithium iodide can provide lithium ions in iodide-containing electrolytes used in these cells.
Lithium bromide: Lithium bromide is an ionic compound composed of lithium cations and bromide anions. It provides the intermediate halide comparison between chloride and iodide.
Iodide: Iodide is the monatomic anion I⁻, formed when an iodine atom gains one electron. It is the anion present in lithium iodide's ionic lattice.
Solvation: Solvation is the stabilization of a dissolved substance by surrounding solvent molecules. Hydration is the water-specific form of this process.

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