Micropillar-based channel patterning in high-loading graphite anodes for superior Li-ion batteries
Doyoub Kim , Alexandre Magasinski , Seung-Hun Lee , Hana Yoo , Ah-Young Song , Gleb Yushin
Battery Energy ›› 2024, Vol. 3 ›› Issue (3) : 20230028
Micropillar-based channel patterning in high-loading graphite anodes for superior Li-ion batteries
This study presents a low-cost, one-step electrode patterning method that uses a template with micropillars to indent a hexagonal array of channels in high-loading graphite anodes for faster electrolyte infiltration and Li-ion transport. In contrast to prior studies on using laser micro-machining, active material losses could be completely avoided by the proposed methodology. The process can also be made roll-to-roll and continuous. Furthermore, the very small volume fraction of the introduced channels (<1wt.%) has little impact on practically attainable energy density or specific energy. Yet, thus introducing pore channels significantly reduces electrolyte infiltration time and improves rate performance.
channel patterning / electrolyte infiltration / high-loading graphite / Li-ion transport / one-step
2024 The Authors. Battery Energy published by Xijing University and John Wiley & Sons Australia, Ltd.
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