All-water-based solution processes for metallic electrodes on various substrates and their applications.
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Developing fabrication of conducting electrodes on various substrate has attracted substantial attentions as an essential way to achieve wide-ranged application of electronic devices. Here, we report a simple and effective approach for the fabrication of highly conductive electrodes utilizing various substrate. Electrodes were formed by combining colloidal gold nanoparticles deposition with Au or Ag enhancement. Firstly, Ag film is applied to electrocatalyst for CO2 conversion and it demonstrates a high CO FE of 75.7% at a low overpotential of 0.19 V. Secondly, transparent mesh electrode is fabricated, having 700 nm feature size with high optical transmittance of 97.7% and high conductivity (71.6 Ω/sq). Cotton-based Au electrodes is applied to flexible wearable heater which is able to heat up to 120 °C at 1 V within a few second and supercapacitor is fabricated with electrodeposited MnO2 as active material showing good specific capacitance of 227 F/g at 5 mV/s scan rate.