What is the name of (CooNa)2?

The compound (CooNa)2 is commonly referred to as sodium cobalt(II) oxide. This compound consists of sodium (Na) and cobalt (Co) in a specific stoichiometric ratio. It is often used in various applications, including batteries and catalysts. The "Coo" notation appears to be a typographical error, as cobalt is typically denoted as "Co."