New PEDOT Derivatives Electrocoated on Silicon Nanowires Protected with ALD Nanometric Alumina for Ultrastable Microsupercapacitors

This work deals with electroactive conducting polymers (ECPs) used as a complementary component on purely capacitive silicon nanowires protected by a 3 nm alumina layer. Accordingly, in this work, we use a fast and simple deposition method to create a pseudocapacitive material based on the electropolymerization in aqueous micellar media (SDS and SDBS 0.01 M) of hydroxymethyl-EDOT (EDOT-OH) onto 3 nm alumina-coated silicon nanowires (Al-3@SiNWs). The composite material displays remarkable capacitive behavior with a specific capacitance of 4.75 mF center dot cm(-2) at a current density of 19 mu A center dot cm(-2) in aqueous Na2SO4 electrolyte.

Automated summary

This study utilizes a fast and simple deposition method to create a pseudocapacitive material based on EDOT-OH on alumina-coated silicon nanowires, displaying remarkable capacitive behavior in aqueous Na2SO4 electrolyte.