Impact of alginate and fluoroethylene carbonate on the electrochemical performance of SiO–SnCoC anode for lithium-ion batteries

Abstract

The electrochemical performance of SiO–SnCoC composite anode for high-energy lithium-ion batteries was evaluated with particular emphasis on the impact of Alginate as a polymeric binder, as well as fluoroethylene carbonate (FEC) as electrolyte additive. It was found that the presence of FEC and the use of alginate pH 3 as binder help to improve the electrochemical stability of the composite anode, showing the best electrochemical performance with a high specific capacity, great capacity retention, and excellent coulombic efficiency. Particularly, the high precision self-discharge current study revealed that the alginate binder slowed down the parasitic reactions between the lithiated anode and the non-aqueous electrolyte.