Integrated prelithiation and SEI engineering for high-performance silicon anodes in lithium-ion batteries.

ABSTRACT: Improving the initial Coulombic efficiency (ICE) of silicon anodes in lithium-ion batteries is a key challenge for enhancing their performance. Traditional prelithiation methods, such as using lithium naphthalenide (Li-Naph), are limited by the low lithiation potential of crystalline silicon, making them less effective for commercial applications. This study demonstrates that amorphous silicon anodes, with a higher lithiation potential, can be effectively prelithiated using Li-Naph. This prelithiation process also forms a robust solid electrolyte interphase, which significantly enhances the anode's cycling stability and overall battery performance. The prelithiated silicon anodes achieved a remarkable ICE improvement from 74.8% to 97.2% in full-cell tests. Furthermore, 27 mAh pouch cells e

SUBMITTER: Quan L 

PROVIDER: S-EPMC12168764 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature