What is Lithium cobalt oxide?
'''Lithium cobalt oxide''' is a [[chemical compound]]. Its [[chemical formula]] is LiCoO<sub>2</sub>. It is sometimes called '''lithium cobaltate''' or '''lithium cobaltite'''. Lithium cobalt oxide is a dark blue or bluish-gray [[Crystal|crystalline solid]]. It is commonly used in the positive [[Electrode|electrodes]] of [[Lithium-ion battery|lithium-ion batteries]]. == Preparation == Lithium cobalt oxide can be made by heating a [[Stoichiometry|stoichiometric]] [[mixture]] of [[lithium carbonate]] and [[cobalt(II,III) oxide]] or [[Metal|metallic]] [[cobalt]] at 600–800°C, then [[annealing]] it at 900°C for many hours, all under an [[oxygen]] atmosphere. {{Chemistry-stub}}'''Lithium cobalt oxide''' (LiCoO₂) is an [[inorganic compound]] commonly used as a cathode material in [[Lithium-ion battery|lithium-ion]] batteries. It has a layered crystalline structure that allows lithium ions to move in and out during charge and discharge cycles, contributing to its high energy density. LiCoO₂ is widely used in portable electronic devices such as [[Smartphone|smartphones]] and [[laptop]]<nowiki/>s, though its use in [[Electric vehicle|electric vehicles]] is limited due to cost and safety concerns. While it offers good cyclic performance, it is relatively expensive because of its cobalt content and has a risk of thermal runaway at high temperatures. Alternatives such as lithium iron phosphate (LiFePO₄) and lithium nickel manganese cobalt oxide (NMC) are often used in applications requiring improved safety and longevity.<ref>{{Cite web|title=ChatGPT|url=https://chatgpt.com/c/67cc3b03-fe34-8005-a973-e56058160d05|access-date=2025-03-08|website=chatgpt.com}}</ref> [[Category:Cobalt compounds]] [[Category:Lithium compounds]] [[Category:Oxides]]