Abstract
Abstract Silicon (Si) is an attractive anode material for next-generation lithium-ion batteries (LIBs) because of its high theoretical capacity and natural abundance. Therefore, its physical and energy storage properties, especially achieving high specific capacity and cyclability, have been studied extensively. However, there is a lack of reports on the proper fast charging of Si-based LIBs. Herein, we developed an anode by physically mixing Si nanoparticles with carbon nanotubes and assembled a three-electrode pouch cell by pairing the developed anode with a lithium nickel manganese cobalt oxide cathode and an extra reference electrode. The reference electrode was crucial in developing a fast-charging protocol (FCP) that not only fast-charged the cell but also prevented lithium plating, which is essential for extending the cycle life of LIBs. The FCP achieved 10–80% and 0–80% states of charge in 14.5 and 20.5 minutes, respectively, at room temperature. The FCP achieved ~55% capacity retention (616 mAh g-1) after 500 fast-charging cycles, indicating excellent cycle stability and good battery health. This work presents FCP and its performance data from Si-based LIBs to the battery community, which can be crucial to exploring the fastest possible FCP for next-generation high-energy-density LIBs.
Published Version
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