Binder effects on network structures and coating properties of anode slurries for silicon based lithium-ion battery
발표자
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초록
내용
Silicon (Si) particles are attracting materials as an active anode material for lithium-ion batteries since theoretical capacity of the silicon is 10 times higher than that of commercial graphite anodes. Since Si particles are used in water, the anode systems have several advantages such as cheap cost, safe, and environmentally friendly. However, Si particles exhibit huge volume changes during charging and discharging cycles, creating solid-electrolyte interphase (SEI) layers on the Si particles and severe structural damages. For these reasons, the role of binders is critical to maintain the electrode structures. The performance of several types of binders was found to be dependent on pH of the anode solutions. In this study, to investigate the suitable binders, we used various water-soluble binders under different pH conditions. Rheological analysis was performed to investigate the network structures of the slurries.