Electrodeposition Polyaniline Nanofiber on the PEDOT:PSS-Coated SiNWs for High Performance Supercapacitors

Abstract

In this article, a novel silicon-based electrode was designed with the facile solution methods. With the modification of highly conductive PEDOT:PSS layer on the SiNWs by the spin-coated method (SiNWs-PSS), three-dimensional (3D) porous network polyaniline nanofibers (PANI) film was uniformly electrodeposited on the silicon surface (SiNWs-PSS@PANI). The sheet resistances of the PEDOT:PSS layer with different surfactants as well as the deposition time of the PANI were investigated. After optimization, the fabricated SiNWs-PSS@PANI electrode displayed high capacitance about 301.71 mF cm -2 at the current density of 1mA cm -2 , which enhanced~29 fold comparing to 10.18 mF cm -2 of electrode without the PEDOT:PSS layer between the SiNWs and PANI (SiNWs@PANI), outperforming most values of the reported silicon-based electrodes. The electrode designed in this paper provides a new idea to fabricate high-performance of silicon-based micro-supercapacitors with the simple and low-temperature method.

Passivation of silicon nanowires with Ni particles and a PEDOT/MnOX composite for high-performance aqueous supercapacitors

“…Recently, our research group has developed a novel siliconbased electrode structure, wherein the top current collection layer (CC-layer) of the electrodes consists of a hydrophilic and highly conductive PEDOT:PSS layer deposited above the 3D silicon decorated with capacitive materials. [27][28][29][30] In these electrodes, 3D silicon only serves as the framework, and there is no need to consider the oxidization/corrosion of the 3D silicon. However, the conductivity of the PEOOT:PSS layer, as well as its contact resistance between the active materials, limit the resultant electrode performances.…”

Treatment of phenolic wastewater by anaerobic fluidized bed microbial fuel cell filled with polyaniline–macroporous adsorption resin as multifunctional carrier

“…PANI is a better conductive polymer, easy to synthesize and has a low production cost. [ 9 ] Thence, the introduction of PANI into the resin combined the advantages of the two, improving the conductivity and electron transfer rate of the resin. Feasible ideas are provided for the future industrial application of AFB‐MFC.…”