Designing Low Tortuosity Electrode through Pattern Optimization for Fast-Charging using Screen Printing
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United States of America Patent
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Aug 29, 2024
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Feb 27, 2024
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Feb 28, 2023
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Abstract
Reduction in the tortuosity of electrodes is a favored strategy to enhance the fast-charging capability of lithium-ion batteries by optimizing the ion-transfer kinetics. A facile, low-cost, highly controllable, and high-output continual additive manufacturing roll-to-roll screen printing technology is disclosed herein to render customized vertical channels within electrodes. High-accuracy vertical channels were fabricated by applying as-developed inks, using LiNi0.6Mn0.2Co0.2O2, for example, as the cathode material. The optimized screen-printed electrode exhibited a seven-fold higher specific charge capacity (72 mAh/g) at a current rate of 6 C and superior stability compared with that of the conventional bar-coated electrode (10 mAh/g, 6 C) at a mass loading of 10 mg/cm2.
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