(NiO)
NiO is a transition metal oxide with a rock-salt cubic crystal structure, widely recognized as a prototypical Mott insulator. It exhibits antiferromagnetic ordering at room temperature and a wide band gap, making it an important model system for studying strongly correlated electron behavior. NiO is chemically stable and demonstrates good thermal resistance, which supports its use in harsh environments. It is commonly employed in catalysis, electrochemical devices, and as a hole transport layer in optoelectronic applications. Additionally, NiO is widely used in lithium-ion batteries, supercapacitors, and gas sensors due to its redox activity and cost-effectiveness.
