Fig. 2: Performance evaluation of CS mode TENG.

a Schematic diagram of the experimental setup. b Photograph of the device and experiment platform. c Operational mechanism of the MG-based TENG. Voltage (up) and charge (bottom) output of CS mode TENG with d Zr45Cu40Al15 (5 mm × 15 mm) and e Cu (5 mm × 15 mm) as the metal contacting with FEP film. f VOC versus de of different samples. Relationship between surface charge density and de of CS mode TENG with different metal materials under g soft substrate and h hard substrate. Here, the soft substrate was silicone foam tape with a thickness of 3 mm. Source data are provided as a Source Data file.