However, we observed a decreasing trend in the time interval for reaching the maximum instantaneous current and the transferred charge ( Qc ) during one movement cycle with increasing vibration frequency, as depicted in Figure 4 b.
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Enhancing the Performance of Triboelectric Generator: A Novel Approach Using Solid-Liquid Interface-Treated Foam and Metal Contacts.
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The current peaks showed an increasing trend with the increasing number of movement cycles and approach a stable saturation value after a sufficiently long time, as shown in Supplementary Material Figure S2a .