Citric acid and ascorbic acid as surface modifiers on silicon as high cycle stability anode material in Li ion battery

Abstract

We successfully modify citric acid and ascorbic acid on silicon surface via a simple planetary ball-milling and heat treatment without high cost and risk of environment pollutions This study shows that heat treatment temperature significantly affect molecular structure in the modification layer and modification layer thickness The observed electrochemical performance of M-Si 150℃ shows good cycling ability (1787 mAh g-1 with 75 8 % retention after 100 cycles) Thus M-Si 150℃ as anode material performs better electrochemical properties

Date of Award	2020
Original language	English
Supervisor	Jow-Lay Huang (Supervisor)