Insights into the spontaneous formation of hybrid PdO _x /PEDOT films: electroless deposition and oxygen reduction activity.

ABSTRACT: Hybrid palladium oxide/poly(3,4-ethylenedioxythiophene) (PdO _x /PEDOT) films were prepared through a spontaneous reaction between aqueous PdCl₄ ^2- ions and a nanostructured film of electropolymerized PEDOT. Spectroscopic and electrochemical characterization indicate the presence of mixed-valence Pd species as-deposited (19 ± 7 at% Pd⁰, 64 ± 3 at% Pd²⁺, and 18 ± 4 at% Pd⁴⁺ by X-ray photoelectron spectroscopy) and the formation of stable, electrochemically reversible Pd⁰/α-PdO _x active species in alkaline electrolyte and furthermore in the presence of oxygen. The elucidation of the Pd speciation as-deposited and in solution provides insight into the mechanism of electroless deposition in neu

SUBMITTER: Vigil JA 

PROVIDER: S-EPMC9082369 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature