Silver Nanowire Modified Fabrics for Wearable Triboelectric Nanogenerators

2019-12-01
Functional textiles received considerable attention both in scientific field and in the market since late 2000s. Thanks to the developments in nanotechnology, functional textiles have been evolving into smart textiles. In addition to powering the smart textiles, improvement of their washing stability has utmost importance. Currently, batteries are used as the energy sources of smart textiles. However, there are cases where batteries do not fulfill the consumer needs. Moreover, integration of batteries onto the conventional clothes without reducing the consumer comfort is almost impossible. As a consequence, self-powered systems using triboelectric nanogenerators (TENGs) are evolved as strong alternatives to battery powered smart textiles. Silver nanowires are known to impart antibacterial activity [1] and heatability [2] to the textiles. In this study, silver nanowire (Ag NW) decorated fabrics are used as current collectors for the realization of wearable TENGs. Thermoplastic polyurethane (TPU) was deposited onto Ag NW decorated textiles and used as both the dielectric and protection layer. Simple dip and drying method was used for the deposition of both Ag NWs and TPU. The overall structure was used as a single electrode for wearable TENGs, where an open circuit voltage and short circuit current of 30 V and 4 µA were measured, respectively. TENGs were connected in series to further improve the output power. TPU overcoating was also demonstrated to enhance the washing stability of the Ag NW decorated fabrics. While the fabrics without TPU coating lost their conductivity after 10 washing cycles, TPU overcoated fabrics kept their conductivity up to 20 washing cycles. [1] Silver Nanowire Modified Fabrics for Wide Spectrum Antimicrobial Applications, D. Doganay, A. Kanicioglu, S. Coskun, G. Akca, H.E. Unalan, J. Mater. Res. 34 (2019) 500. [2] Silver Nanowire Decorated Heatable Textiles, D. Doganay, S. Coskun, S. Polat, H. E. Unalan, Nanotechnology 27 (2016) 435201.
Citation Formats
D. Doğanay, M. B. Durukan, M. Ö. Çiçek, M. N. Güven, and H. E. Ünalan, “Silver Nanowire Modified Fabrics for Wearable Triboelectric Nanogenerators,” presented at the Materials Research Society Fall Meeting 2019, 1 - 06 December 2019, Massachusetts, United States Of America, 2019, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/79945.