Cotton fabric-based triboelectric nanogenerators (TENGs): effect of sewing pattern on TENG performance

In this work, we modified surface of cotton using silane grafting to obtain positive and negative triboelectric surfaces. The modified cotton fabrics were characterized using FTIR, SEM, EDS and XPS, respectively. To fabricate all textile-based TENGs, the fluoroalkylated siloxane cotton (F-cotton) and cyanoalkylated siloxane cotton (C-cotton) were attached with copper (Cu) fabric electrodes by sewing with silver threads. The sewing patterns were desigend as one way pattern (TENG-P1) and cross pattern (TENG-P2), respectively. After apply mechanical tapping on textile-based TENGs, it was found that TENG-P1 device provided a maximum voltage of 13.7 V and a maximum current of 0.7 mA.