Na3CoO2

Sodium cobalt oxide (Na3CoO2) is an oxide ceramic compound composed of sodium, cobalt, and oxygen. This material is primarily of research interest as a thermoelectric ceramic, studied for its potential to convert thermal gradients into electrical current with relatively high performance compared to traditional thermoelectrics. While not yet established in mainstream commercial applications, the sodium cobalt oxide family is notable in materials science for demonstrating layered crystal structures that enable efficient charge carrier transport, making it a candidate for waste heat recovery and energy conversion technologies where conventional thermoelectric materials face cost or performance limitations.