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

摘要

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 pH3 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.