Used as a cathode material in lithium-ion batteries, particularly LiCoPO₄, which features an olivine structure enabling lithium ion diffusion through one-dimensional channels during charge and discharge cycles. It offers high operating voltage (around 4.8 V) and good energy density, making it suitable for portable electronics such as smartphones, laptops, and tablets. However, it is not yet widely commercialized due to challenges including limited capacity, electrolyte instability at high voltages, thermal stability concerns, and the high cost of cobalt. Research is ongoing for applications in electric vehicles and other high-power uses.