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Figure 2. Dynamic regulation of solid-liquid interfacial EDLs via triboelectrically induced ion polarization. (A) Schematic illustration of the liquid-droplet sliding platform constructed to characterize charge generation induced by solid-liquid contact electrification and interfacial EDL formation; (B) Influence of Au sputtering time in metal/dielectric hybrid materials on the triboelectric charges carried by sliding droplets; (C) Influence of dielectric substrate electronegativity in hybrid materials on the triboelectric charges carried by sliding droplets; (D) Schematic illustration of the modified experimental platform for investigating non-contact EDL modulation through triboelectrically induced ion polarization using a charged dielectric layer positioned above the hybrid surface; (E) Influence of forward and reverse triboelectrically induced ion polarization on the triboelectric charges carried by sliding droplets; (F-H) Schematic models of solid-liquid interfacial EDL structures under unpolarized, forward polarization, and reverse polarization conditions, respectively; (I) Influence of contact-separation cycles during solid-solid triboelectrification on triboelectrically induced ion polarization and the corresponding triboelectric charges carried by sliding droplets. PET: Polyethylene terephthalate; I_SC: short-circuit current; EDL: electrical double layer.