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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11587/405915
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