Triboelectric Nanogenerator As a Probe for Investigating Charge Transfer at Liquid–Solid Interfaces

The liquid-solid interface plays a fundamental role in a wide range of phenomena, including reaction kinetics, charge transfer, and fluid behavior. However, the underlying physicochemical mechanisms governing these interfacial interactions remain a topic of ongoing debate. Recently, the concept of the triboelectric nanogenerator probe (TENG probe) has been introduced to investigate the charge transfer at liquid-solid interfaces by recording the triboelectrification of liquid droplets sliding on