Abstract
The development of stretchable electronics could enhance novel interface structures to solve the stretchability–conductivity dilemma, which remains a major challenge. Herein, we report a nano-liquid metal (LM)-based highly robust stretchable electrode (NHSE) with a self-adaptable interface that mimics water-to-net interaction. Based on the in situ assembly of electrospun elastic nanofiber scaffolds and electrosprayed LM nanoparticles, the NHSE exhibits an extremely low sheet resistance of 52 mΩ sq−1. It is not only insensitive to a large degree of mechanical stretching (i.e., 350% electrical resistance change upon 570% elongation) but also immune to cyclic deformation (i.e., 5% electrical resistance increases after 330 000 stretching cycles with 100% elongation). These key properties are far superior to those of the state-of-the-art reports. Its robustness and stability are verified under diverse circumstances, including long-term exposure to air (420 days), cyclic submersion (30 000 times), and resilience against mechanical damages. The combination of conductivity, stretchability, and durability makes the NHSE a promising conductor/electrode solution for flexible/stretchable electronics for applications such as wearable on-body physiological signal detection, human–machine interaction, and heating e-skin. (Figure presented.).
Original language | English |
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Article number | e12302 |
Journal | InfoMat |
Volume | 4 |
Issue number | 4 |
DOIs | |
Publication status | Published - 5 Mar 2022 |
Keywords
- crack confinement
- functional e-skin
- in situ assembly
- self-adaptable interface
- ultra-robust stretchable electrode
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Materials Science (miscellaneous)
- Surfaces, Coatings and Films
- Materials Chemistry