Upconversion nanoparticles demonstrate unique optical properties, making them attractive for applications in bioimaging, sensing, and disease management. However, their potential toxicity remains a significant concern. This review aims to provide a thorough analysis of the toxicity linked with upconversion nanoparticles. It examines various aspects

Lithium cobalt oxide compounds, denoted as LiCoO2, is a prominent substance. It possesses a fascinating arrangement that supports its exceptional properties. This layered oxide exhibits a remarkable lithium ion conductivity, making it an ideal candidate for applications in rechargeable energy storage devices. Its robustness under various operating