The Effect of Ambient Humidity on the Performance of a Wearable Textile Triboelectric Generator

Research on the triboelectric phenomenon and its use in so‐called triboelectric generators (TEG) has often led scientists to study the various parameters involved in the production of electricity induced by the contact and friction of textile structures. Although the use of textile materials and structures to build textile‐based TEGs is of particular interest, thanks to the advantages they can offer, however, the parameter of ambient humidity acts intensively on triboelectricity, affecting their electric power outcomes. This study investigates the performance of purely textile‐based materials used in a TEG measuring device which combines vertical and sliding modes as if they are part of a wearable garment. Six single jersey‐knitted textile samples, of identical yarn linear densities, are prepared. One material (para‐aramid) is used as the reference sample and it is paired with the rest (cotton, modal, polyester, wool, and acrylic). Consequently, five material combinations are available for measuring under various relative humidity conditions. Through these test series which reflect how a textile‐based TEG would operate under real conditions when embedded in a garment, the results reveal the big impact of ambient humidity on the triboelectric voltage outcome.