Enhanced Performance of Li-Ion Battery Cathodes by Atomic Layer
Atomic layer deposition (ALD) has emerged as a promising technique to improve performance of Li-ion battery cathodes by depositing conformal and ultrathin coatings, and furthermore, the precise control of coating thickness by ALD benefits pursuit of an optimized result. In this talk, the application of ALD coating will be extended to doping in structure, which inherited merits of ALD, including conformality and precise control. Fe surface-doping was performed in a high-energy Li-rich layered cathode and a high-voltage spinel cathode. Thanks to this modification, the specific capacity and cycle life were significantly improved.