O4 C4 Li1 Co1

This is a lithium cobalt oxide (LiCoO₂) compound, a layered oxide semiconductor commonly used as a cathode material in lithium-ion battery chemistry. It belongs to the family of lithium transition metal oxides and is notable for enabling high energy density in rechargeable batteries, making it the industry standard for portable electronics despite cobalt's cost and supply chain concerns. Engineers select this material when maximum volumetric energy density and stable cycling performance are priorities, though newer alternatives (NMC, LFP) are increasingly chosen for cost reduction or improved safety in automotive applications.