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Chemical modification of polymer surfaces for advanced triboelectric nanogenerator development

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Chemical modification of polymer surfaces for advanced triboelectric nanogenerator development ( chemical-modification-polymer-surfaces-advanced-triboelectri )

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Y. Yu, X. Wang / Extreme Mechanics Letters ( ) – 9 Fig. 6. (a, b) Voc of TENG (a) before and (b) after the ion injection process. (c, d) Jsc of TENG (c) before and (b) after the ion injection process with a pressing force of ∼20 N. (e) Jsc of TENG after ion injection with a deformation force of ∼300 N. (f) The Voc and Jsc variations of ion injected TENG versus different external load resistances. (g) Power density variation of ion injected TENG as a function of different external load resistances. Source: Reprinted with permission from Ref. [70]. © 2014, Wiley-VCH block co-polymer nanopatterns into more durable inor- ganic patterns and to improve the polymeric lithography resistance towards the subsequent etching [76–78]. In- spired by these developments, SIS was expected to be ef- fective in tailoring the internal composition and electrical properties of polymer films, which may provide an ulti- mate solution for modifying triboelectric materials in bulk volume. Based on SIS, Yu and coworkers reported an internal AlOx doping of several triboelectric polymers, including PDMS, polyimide (Kapton) and poly(methyl methacrylate) (PMMA) [79]. AlOx molecules were found to be capable of penetrating into these polymers as deep as ∼3 μm, which effectively tuned the bulk electrical property of the films. TENG devices using the modified polymer films exhibited enhanced power output; and this enhancement remained effective after the surface of polymer film was

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