Barium titanate (CAS number 12047-27-7), a pyroelectric and piezoelectric material, is applied in a wide range of electronic products, including capacitors, transducers, and optics. Barium titanate powder adopts an ABX3 perovskite structure with polymorphs of cubic (currently available at Ossila), tetragonal, orthorhombic, and rhombohedral crystal structures.

Barium titanate has recently been involved in battery research. It is applied as a cathode and an additive in the electrolyte of Li-ion batteries. Theoretical simulations reveal that barium titanate diminishes the growth and spread of lithium dendrite on the electrode. Barium titanate offers a long cycle life to solid-state batteries, with a reversible capacity of 103.2 mAh/g over 500 cycles at 1C. When used as an additive in the electrolyte, barium titanate boosts ionic conductivity to 1.5 × 10−4 S/cm at 25 °C.

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