Rationalizing the Triboelectric Series of Polymers

Up-scalable emerging energy conversion technologies enabled by 2D materials: from miniature power harvesters towards grid-connected energy systems

“…The typical tool for evaluating the materials is the empirical ''triboelectric series'' that is made by ranking materials according to their tendency to lose or gain electrons when in contact to each other. 212,213 During such an interaction one of the two substrates will always gain electrons while the other substrate will lose electrons.…”

Effect of tube wall material on electrostatic separation of plant raw‐materials

“…A metal with a higher work function is closer to the negative end of the so-called triboelectric series ( Figure 1) and tends to be charged negatively when in friction with another metal with a lower work function (Kwetkus, 1998). For conductor-insulator and insulator-insulator contacts however the exact mechanisms of charge transfer are unknown, although multiple studies have tried to characterize and develop theories for tribo-charging between these materials (Mirkowska et al, 2016;Zhang, Chen, Jiang, Lim, & Soh, 2019). In practice, often triboelectric series are reported, but the drawback is that the order of materials in the triboelectric series is not always reproducible since many additional factors influence the triboelectrification process.…”

Electric generators based on dynamic semiconductor junctions

“…One example in cyclic triboelectric series is shown in Figure 2-6(b) where the relationship of the materials cannot be ranged linearly, suggesting the ordering of the materials involves a combination of other physical properties, charge media and electrification mechanisms [50]. However, Zhang et al [52] had recently reported the linear ordering with these same materials, claiming that the Lewis basicity/acidity should be the only factor that affects the electrification in polymers.…”

“…Based on the experimental observation that the contact electrification for insulators appertains to their acidity or basicity rather than bulk electronic preparties, the mechanism of proton-transfer was developed, which is an evident example of ion transfer [51]. Furthermore, as shown in Figure 2-4 [52], several groups observed the Lewis acidity and/or basicity of an insulating surface are correlated with its contact electrification behaviour [52], [53], whereas the oxidation-reduction (electron transfer)…”