LiCoO 2 Battery Electrode Fabricated by High Deposition-Rate Atmospheric Plasma Spraying for Lithium Battery

Abstract

Lithium cobalt oxide (LiCoO 2 , LCO) thin-film cathodes are usually prepared with slow deposition rates by sputtering techniques. Atmospheric plasma spraying (APS) is a possible technology for the rapid deposition method replacing sputter deposition to fabricate all-solid-state lithium batteries. This study employed the APS device to rapidly deposit LCO thick films as cathodes with deposition rates exceeding 5,400 nm min −1 . The results show that the LCO cathodes have presented a specific capacity of 120 mAh g −1 after being annealed and assembled in a gel polymer electrolyte lithium battery. Furthermore, the LCO cathodes also demonstrated a high areal capacity of 5.65 mAh cm −2 , one of the best areal capacity performances. Therefore, APS technology offers a highly competitive approach to commercializing energy storage products.