Used primarily in the treatment of bipolar disorder as a mood stabilizer, helping to control episodes of mania and depression. It is also employed in the prevention of recurrent mood disturbances in patients with bipolar illness. In industrial applications, lithium carbonate serves as a key raw material in the production of lithium-ion batteries, especially for electronics and electric vehicles. It is used in the manufacture of specialty glasses and ceramics, where it lowers melting temperatures and improves thermal shock resistance. Additionally, it finds use in aluminum smelting as an additive to reduce energy consumption and emissions.