The role of bio-based binders in silicon anodes for high performance lithium ion battery
발표자
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초록
내용
Li-ion battery (LIB) is one of the most promising energy storage devices with a wide range of applications such as electric vehicles, smartphones, and wearable devices. Silicon anodes display a superior specific capacity (theoretical capacity: 3000 mAh g-1) and high potential as anode material for LIB. However, silicon anodes cause a huge volume expansion and instability of the solid electrolyte interface (SEI) during the repetitive charge and discharge process, leading to cycle performance degradation. Polymer binders play a crucial role to suppress the volume expansion of the electrodes and affect the conformation of SEI layers. In this study, we utilize the crosslinked polymer with a citirc acid as the binder for a stable anode in LIB. This result indicates that the innovative way to suppress the severe volume change by using a high-strength bio-based binder may open a new approach to realize the industrial application of Si-based anodes in lithium-ion batteries.