Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

 
 
DownloadE-Mail
  Effect of particle size on the activity and durability of the Pt/C electrocatalyst for proton exchange membrane fuel cells

Xu, Z., Zhang, H., Zhong, H., Lu, Q., Wang, J., & Su, D. S. (2012). Effect of particle size on the activity and durability of the Pt/C electrocatalyst for proton exchange membrane fuel cells. Applied Catalysis B: Environmental, 111-112, 264-270. doi:10.1016/j.apcatb.2011.10.007.

Item is

Dateien

einblenden: Dateien
ausblenden: Dateien
:
XuZhuang-Pt particle size effect on the electrocatalytic activity and durability.pdf (beliebiger Volltext), 545KB
Name:
XuZhuang-Pt particle size effect on the electrocatalytic activity and durability.pdf
Beschreibung:
-
OA-Status:
Sichtbarkeit:
Öffentlich
MIME-Typ / Prüfsumme:
application/pdf / [MD5]
Technische Metadaten:
Copyright Datum:
2012
Copyright Info:
Elsevier
Lizenz:
-

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Xu, Zhuang1, 2, Autor
Zhang, Huamin1, Autor
Zhong, Hexiang1, Autor
Lu, Qiuhong3, Autor
Wang, Junfeng3, Autor
Su, Dang Sheng3, 4, Autor           
Affiliations:
1Division of Energy Storage Batteries and Technologies, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China, ou_persistent22              
2Graduate School of Chinese Academy of Sciences, Beijing 100039, China, ou_persistent22              
3Shenyang National Laboratory for Materials Science Institute of Metal Research, Chinese Academy of Science, ou_persistent22              
4Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: Carbon supported Pt (Pt/C) with various average particle sizes ranging from sub 3 nm to 6.5 nm were in situ prepared and characterized at the cathode of proton exchange membrane fuel cells (PEMFCs). A clear Pt particle size effect on both the catalytic activity for oxygen reduction reaction (ORR) and the durability of the electrocatalyst was revealed. With the Pt particle size increase, both the surface specific activity and the electrochemical stability of Pt/C improved; however, the mass specific activity of Pt/C is balanced by the electrochemical surface area loss. The reduced occupation of corner and edge atoms on the Pt surface during the Pt particle size increase is believed to weaken the adsorption of the oxygenated species on Pt, and thereafter releases more available active sites for ORR and also renders the Pt surface a stronger resistance against potential cycling. It is therefore proposed that by designing the Pt microstructure with more face atoms on the surface, cathode electrocatalyst with both improved activity and enhanced durability would be developed for PEMFCs.

Details

einblenden:
ausblenden:
Sprache(n): eng - English
 Datum: 2011-10-122012-01-12
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1016/j.apcatb.2011.10.007
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Applied Catalysis B: Environmental
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Amsterdam : Elsevier
Seiten: - Band / Heft: 111-112 Artikelnummer: - Start- / Endseite: 264 - 270 Identifikator: ISSN: 0926-3373
CoNE: https://pure.mpg.de/cone/journals/resource/954928540173