Accurate prelithiation of lithium ion battery SiOx anodes towards improved initial coulombic efficiency

Abstract

We propose an accurate prelithiation method for SiO_x anodes using ball-milling with LiF. The formation of a LiF-rich SEI layer reduces active lithium loss, resulting in excellent electrochemical performance. This study provides a new approach for developing high-performance silicon-based anodes for lithium-ion batteries.