Fig. 1From: Structural and Chemical Modifications Towards High-Performance of Triboelectric Nanogeneratorsa Schematic of triboelectric materials in series depending on their relative triboelectric charge attracting/receiving characteristics (Reproduced with permission from Ref [19].). b The atomic-scale-electron-cloud-potential-well model to describe the contact electrification process of a TENG (Reproduced with permission from Ref [21].)Back to article page