Highly stretchable wrinkled electrode based on silver ink‐elastomer nanocomposite with excellent fatigue resistance

Abstract

Flexible and stretchable electrodes have attracted immense attention because of their various electronic applications on the wearable sensing electronics, but challenges regarding robust and sustainable electrical performance under static and dynamic mechanical stresses still need to be overcome. Herein, with a simple effective strategy, a highly serviceable and flexible elastomeric electrode fabricated by utilizing an interpenetrating network between acrylic rubber (AR) and silicone rubber (SR), and silver (Ag) ink to increase electrical conductivity, is introduced. Oxygen (O2) plasma and sodium dodecyl sulfate (SDS) treatment on wrinkle substrate surface lead to robust adhesion of Ag ink layer, results in high electrical conductivity. Wrinkle morphology can help to stably maintain the continuous conductive Ag network during static and dynamic deformation. This stretchable electrode possessing properties such as robust and stable electrical conductivity of ~103 S/cm under 150% static tensile deformations and good sustainability after 1000 cycles of dynamic tensile deformations is a promising candidate for stretchable wearable electronics.

Adaptive Self‐Organization of Nanomaterials Enables Strain‐Insensitive Resistance of Stretchable Metallic Nanocomposites

“…The initial conductivity and resistance variation at 50% strain of the fabricated nanocomposite are compared with those from the previous reports (Figure S14, Supporting Information). [41][42][43][44][45][46][47][48][49][50][51][52][53][54] The strain-responsive self-organization of the surfacemodified Ag nanomaterials (i.e., Ag nanomaterials with 1-decanethiol ligand) can also be observed under biaxial strains. When a biaxial strain is applied to the nanocomposite, 2D tensile stress parallel to the applied strain and compressive stress perpendicular to the applied strain are induced (Figure S15a, Supporting Information).…”

Elastic composites fabricating for electromagnetic interference shielding based on MWCNTs and Fe3O4 unique distribution in immiscible NR/NBR blends

“…With incorporation of 3 phr MWCNTs into NR/NBR (50/50) matrix, a dramatic increase of almost seven orders of magnitude in the electric conductivity, that is, a typical percolation behavior, can be found. [ 27,31 ] This significant increase in the conductivity is attributed to the formation of electrically conductive pathway through the rubber matrix, enhancing electron charge‐transfer. [ 12 ] The greater amount of MWCNTs is introduced into the nanocomposite, the denser conductive network is formed.…”

Flexible Warp-Knitted Metal Mesh-Based Composites: An Effective EMI Shielding Material with Efficient Joule Heating

“…The test direction is along the wale direction of warp-knitted mesh-based composites. Based on electrical resistance results, the electrical conductivity (σ) can be calculated using the following equation where R , L , W , and t represent the measured electrical resistance, length, width, and thickness of the sample, respectively. The electrical conductivity values were the mean value of 10 test samples.…”

“…The test direction is along the wale direction of warp-knitted mesh-based composites. Based on electrical resistance results, the electrical conductivity (σ) can be calculated using the following equation 30…”