The stability of pyrolyzedMn–Co/polypyrrole (PPy) nanocomposites towards theOxygen Reduction Reaction (ORR) in alkaline solution,was studiedwith a close-knit group of complementarymicroscopic and space-resolved spectroscopic approaches: Atomic Force Microscopy (AFM), Scanning and High-Resolution Transmission Electron Microscopy (SEM, HRTEM) and identical-location Scanning PhotoElectron Microscopy (SPEM). Tracking quasi-in situ the morphochemical evolution of the Mn–Co/PPy catalyst upon electrochemical aging under ORR conditions by this multi-technique approach, has allowed to clarify the key physico-chemical processes underlying the dramatic impact of Co additions to stability improvement.
ORR stability of Mn–Co/polypyrrole nanocomposite electrocatalysts studied by quasi in-situ identical-location photoelectron microspectroscopy
BOCCHETTA, PATRIZIA
Writing – Original Draft Preparation
;MELE, CLAUDIO;BOZZINI, Benedetto
2016-01-01
Abstract
The stability of pyrolyzedMn–Co/polypyrrole (PPy) nanocomposites towards theOxygen Reduction Reaction (ORR) in alkaline solution,was studiedwith a close-knit group of complementarymicroscopic and space-resolved spectroscopic approaches: Atomic Force Microscopy (AFM), Scanning and High-Resolution Transmission Electron Microscopy (SEM, HRTEM) and identical-location Scanning PhotoElectron Microscopy (SPEM). Tracking quasi-in situ the morphochemical evolution of the Mn–Co/PPy catalyst upon electrochemical aging under ORR conditions by this multi-technique approach, has allowed to clarify the key physico-chemical processes underlying the dramatic impact of Co additions to stability improvement.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
