Enhanced Electrochemical Performances of Si/Graphite Composite Anode Using Commercial Promising Waterborne Conductive Binder

Abstract

Silicon has attracted increasing attention as an anode material in Li-ion batteries (LIBs) owing to its high theoretical capacity. However, electrochemical properties of Si-based anodes are hindered by the electrode swelling during the charge/discharge process. In this paper, we developed a novel polymer binder with high electronic conductivity and self-healing function leading to stable cycling. These properties are attributed to the polymer structure which could provide more free Li+ leading to higher conductivity and capacity retention of the anodes. It is believed that this novel conductive binder could be a promising candidate for commercial application for the Si/graphite composite anodes in Li-ion batteries.