Fully Fibrous Large‐Area Tailorable Triboelectric Nanogenerator Based on Solution Blow Spinning Technology for Energy Harvesting and Self‐Powered Sensing

Abstract

An all‐fibrous large‐area (20 × 50 cm2) tailorable triboelectric nanogenerator (LT‐TENG) is prepared using a one‐step solution blow spinning technology, which has the advantages of easy operation, scale‐up in the area, and high production efficiency. The prepared LT‐TENG is composed of polyvinylidene fluoride (PVDF)/MXene (Ti3C2Tx) nanofibers (NFs) and conductive textile. Benefiting from the fibrous materials and large‐area properties, the LT‐TENG possesses the merits of good tailorability, breathability, hydrophobicity, and washability. When optimized by mixing the MXene into PVDF NFs, the LT‐TENG has a preferable output and sensing property, with a detection range over 16 kPa and a relatively high sensitivity of 12.33 V KPa−1. At maximum applied pressure, the voltage, current, and charge are 108 V, 38 µA, and 35 nC, respectively. This LT‐TENG can serve as a biomechanical energy harvester when used as wearable devices with an output power density of 12.6 mW m−2 at an external load resistance of 500 MΩ, and it also has the ability of self‐powered tactile sensing for pressure mapping and slide sensing. Thus, this LT‐TENG exhibits great potential prospects in wearable devices, intelligent robots, and human–machine interaction.

Relaxation‐Induced Significant Room‐Temperature Dielectric Pulsing Effects

“…In SBS process, high-pressure airflow is used instead of the high-pressure electric field of electrostatic spinning, which is not only more efficient in production but also safer. [30][31][32][33][34] This efficient, convenient, safe, and energy-efficient production process has proven to be a favorable alternative to electrostatic spinning. Coaxial nanofibers are composed of PVDF as the shell layer and PEG as the core layer, where liquid PEG is encapsulated in the PVDF nanotubes.…”

High Anti‐Jamming Flexible Capacitive Pressure Sensors Based on Core–Shell Structured AgNWs@TiO2

“…Consistent with the reported results. [52] The 2𝜃 values at 38.2°, 44.4°, 64.4°, and 77.2°corresponds to the (110), ( 200), ( 220), (331) crystal planes of Ag 0 in the core-shell structure nanoparticles, respectively. [53] Here, the TiO 2 is amorphous, so the TiO 2 phase cannot be checked.…”

Review of MXene Nanosheet Composites for Flexible Pressure Sensors

“…This composite nanomaterial can also be used to prepare triboelectric nanogenerators with good output and sensing properties. For example, Xu et al 97 prepared PVDF/MXene nanofiber films via the solution blowspinning technology, which is more efficient and simple than electrospinning and can be used for large-scale production.…”