Effect of Silicon Anode Additives on Lithium Ion Batteries

Silicon anode of lithium ion batteries was fabricated with different binders and conductive additives (acetylene black, SuperP, VulcanXC-72, BP2000), and the electrochemical performance was investigated in detail. The effect of morphology and addition amount of conductive additives on the electrochemical performance of silicon electrode were investigated. Then, the appropriate type and content of binder in the silicon electrode was optimized. The morphology of silicon electrodes were characterized by scanning electron microscope(SEM). Electrochemical performances of the silicon electrodes were measured by constant current charge-discharge and cyclic voltammetry(CV).