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Archivio digitale delle tesi discusse presso l’Università di Pisa

Tesi etd-09172020-141610


Tipo di tesi
Tesi di laurea magistrale
Autore
MANZO, ANDREA
URN
etd-09172020-141610
Titolo
Synthesis and Characterization of Ce-based M-N-C Catalysts
Dipartimento
CHIMICA E CHIMICA INDUSTRIALE
Corso di studi
CHIMICA
Relatori
relatore Prof. Labella, Luca
relatore Dott. Fellinger, Tim Patrick
controrelatore Dott.ssa Funaioli, Tiziana
Parole chiave
  • PGM-free
  • ORR
  • Ce based catalysts
Data inizio appello
22/10/2020
Consultabilità
Non consultabile
Data di rilascio
22/10/2090
Riassunto
In this thesis work we prepared and characterized new cerium-based M-N-C materials. The idea to have a bigger active site imprinter like a lanthanide would have formed a bigger pocket M-Nx (with X > 4) since this could have improved the catalytic activity after the transmetallation with iron. Moreover, for Fe–N–C catalysts, one of the main degradation mechanisms that is usually discussed is the surface oxidation induced by H2O2. For this purpose, cerium is used to improve the catalytic activity and to avoid the degradation of the fuel cell since this lanthanide works like a radical scavenger which improves polymer electrolyte membrane (PEM) fuel cell durability.
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