Ag@Ni Core–Shell Nanowire Network for Robust Transparent Electrodes Against Oxidation and Sulfurization

Abstract

Silver nanowire (Ag NW) based transparent electrodes are inherently unstable to moist and chemically reactive environment. A remarkable stability improvement of the Ag NW network film against oxidizing and sulfurizing environment by local electrodeposition of Ni along Ag NWs is reported. The optical transmittance and electrical resistance of the Ni deposited Ag NW network film can be easily controlled by adjusting the morphology and thickness of the Ni shell layer. The electrical conductivity of the Ag NW network film is increased by the Ni coating via welding between Ag NWs as well as additional conductive area for the electron transport by electrodeposited Ni layer. Moreover, the chemical resistance of Ag NWs against oxidation and sulfurization can be dramatically enhanced by the Ni shell layer electrodeposited along the Ag NWs, which provides the physical barrier against chemical reaction and diffusion as well as the cathodic protection from galvanic corrosion.

Stretchable, Skin‐Mountable, and Wearable Strain Sensors and Their Potential Applications: A Review

“…Physical, chemical, biological, and environmental status of the human body could be monitored by various fl exible sensors with high effi ciency and minimum discomfort. [1][2][3][4][5][6][7][8][9] Stretchable strain sensors were fabricated through different processes including fi ltration method, [ 10,47,58,71,73,79,80 ] printing technology, [ 57,65,66,71 ] transferring and micromolding methods, [ 14,50,52,55,56,58,60 ] coating techniques, [ 49,54,61,63,72,78,79 ] liquid phase mixing, [ 12,51,52,60,62,71,77,81 ] and chemical synthesis methods. [ 14,55,56,76,82 ] We have recently reported highly stretchable and sensitive strain sensors based on the silver nanowires (AgNWs)-elastomer nanocomposites.…”

Highly Reliable Silver Nanowire Transparent Electrode Employing Selectively Patterned Barrier Shaped by Self-Masked Photolithography

“…39,40,47,48 The accelerating test result in this work is compared with other reported results in Figure 5b. The resistance increased faster by applying the Ag@Ni core-shell nanowire structure 24 for 12 h or the AgNWs/rGO (reduced graphene oxide) structure 39 for more than 144 h. The resistance of the electrode with patterned barrier is relatively stable compared with these two kinds of electrodes, even in the harsher environment (85 °C/85% RH in this work, while 80 °C/85% RH and 70 °C/70% RH in the other two works). Although the hierarchical PVA/AgNWs/graphene structure 37 demonstrated better protecting effect in 168 h storage, this result was achieved at lower temperature of 80 °C and especially much lower humidity of 50% RH.…”

“…80%. (b) The accelerating test result in our work comparing with other reported results, including Ag@Ni core-shell nanowire structure,24 hierarchical PVA/AgNWs/graphene structure,37 AgNWs/rGO,39 Cu@Zn core-shell nanowire structure 36. (c) The transmittance change ∆T of the transparent electrodes after coating or covering different protecting layers (∆T=T-T 0 ).…”

“…To the best of our knowledge, there is still no work well integrating these two layer types and figuring out the way to avoid all of these disadvantages. Although the electroplating and electroless plating are reported as selectively coating methods for nanostructures, 24,41,42 it is difficult to achieve uniform thin layer by both of the two methods.…”

A Path Beyond Metal and Silicon:Polymer/Nanomaterial Composites for Stretchable Strain Sensors

“…The fabrication methods of stretchable composite strain sensors were categorized into liquid‐phase mixing,[22c,64b,73] chemical vapor deposition,[3c,70,71,74] printing, coating,[4d,76] filtration,[3b,77] and transferring . Although fabrication details and sensing mechanisms are available in recent reviews, we briefly introduce the fabrication below.…”