Catalysis-Induced Highly-Stable Interface on Porous Silicon for High-Rate Lithium-Ion Batteries

Abstract

Highlights In situ etching and co-growth of ultra thin defect-rich oxide layers on porous silicon. Through the construction of nano-sized catalytic interface, the electrolyte addition FEC would decompose to a LiF-rich solid electrolyte interphase (SEI). The robust SEI on porous structured silicon performs high-rate stability at varied temperatures.

Keywords

• Catalytic interface
• Mesoporous
• Inorganic-rich SEI
• Silicon anode
• Lithium-ion batteries