All-fiber tribo-ferroelectric synergistic electronics with high thermal-moisture stability and comfortability

Abstract

Developing fabric-based electronics with good wearability is undoubtedly an urgent demand for wearable technologies. Although the state-of-the-art fabric-based wearable devices have shown unique advantages in the field of e-textiles, further efforts should be made before achieving "electronic clothing" due to the hard challenge of optimally unifying both promising electrical performance and comfortability in single device. Here, we report an all-fiber triboferroelectric synergistic e-textile with outstanding thermal-moisture comfortability. Owing to a tribo-ferroelectric synergistic effect introduced by ferroelectric polymer nanofibers, the maximum peak power density of the e-textile reaches 5.2 W m −2 under low frequency motion, which is 7 times that of the state-of-the-art breathable triboelectric textiles. Electronic nanofiber materials form hierarchical networks in the e-textile hence lead to moisture wicking, which contributes to outstanding thermal-moisture comfortability of the e-textile. The all-fiber electronics is reliable in complicated real-life situation. Therefore, it is an idea prototypical example for electronic clothing.

Wicking–Polarization‐Induced Water Cluster Size Effect on Triboelectric Evaporation Textiles

“…Specifically, we have manufactured a ferroelectric-enhanced triboelectric evaporation textile (FETET) that includes a ferroelectric-enhanced TENG (FETENG) and a directional moisture-wicking fabric (DMWF). On the basis of our previous work, [41] in this work, we further explore the enhancement mechanism of ferroelectric fibers in the contactelectrification process of metal and polymer. Under the action of ferroelectric fibers, the instantaneous output power of TENG reaches 135 W m −3 .…”

Flourishing energy harvesters for future body sensor network: from single to multiple energy sources

“…The PETNG achieved an outstanding maximum output performance with 500 V output voltage, 12 μA current, and 0.31 mW/cm 2 power density through the well-collaborative work between TENG and PENG. Another flexible PETNG is shown in Figure 5 B with the tribo-ferroelectric synergistic effect ( Yang et al., 2019 ). This device contains seven functional layers, including the two outer moisture-wicking fabric layers, two nickel-copper (Ni-Cu) conductive fabric layers as electrodes, two nanofiber nonwovens P(VDF-TrFE) layers, and one central polyamide 6 (PA6) layer with opposite tribo-polarity.…”

“…Reprinted from ref ( Guo et al., 2018b ) with permission, Copyright©2019 Elsevier Ltd. (B) An all-fiber PETNG with P(VDF-TrFE) and PA6. Reprinted from ref ( Yang et al., 2019 ) with permission, Copyright©2020 The Authors. (C) A self-matched PETNG with PET, PVDF, and spider silk.…”

“… (B) An all-fiber PETNG with P(VDF-TrFE) and PA6. Reprinted from ref ( Yang et al., 2019 ) with permission, Copyright©2020 The Authors. …”

“…As the human body motions can cause mechanical friction and deformation concurrently, wearable devices with a design of natural structure hybridization through the multi-layer structure to achieve energy scavenging via triboelectric and piezoelectric effects at the same time were designed, taking full advantage of the features of biomechanical motions ( Song et al., 2018 ; Wu et al., 2019 ; Zhu et al., 2020d ). To further optimize the energy conversion efficiency and improve the output, the enhancement of TENG and PENG based on their coupling triboelectric-ferroelectric synergistic effect was also put forward ( Yang et al., 2019 ; Yu et al., 2019 ).…”