Enhancement of Oxygen Reduction Activity of Fe-added Zirconium Oxide Electrocatalysts without Conductive Supports in Sulfuric Acid

Enhancement of Oxygen Reduction Activity of Fe-added Zirconium Oxide Electrocatalysts without Conductive Supports in Sulfuric Acid

Fe-added zirconium oxide electrocatalyst was synthesized using pyrazine carboxylic acid for catalyzing oxygen reduction reactions (ORR) in acidic media. The optimization of the Fe-additive ratio led to the highest onset potential of 0.917 V for ORR at −10 mA gcat−1 compared to that of previous studi...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Chemistry letters 2022-09, Vol.51 (9), p.927-931
Hauptverfasser: Takeuchi, Yuu, Watanabe, Keita, Matsuzawa, Koichi, Nagai, Takaaki, Ikegami, Kaoru, Monden, Ryuji, Ishihara, Akimitsu
Format: Artikel
Sprache:eng
Schlagworte:
Carboxylic acids
Chemical reactions
Chemical reduction
Electrocatalysts
Iron
Optimization
Oxygen reduction reactions
Sulfuric acid
Zirconium dioxide
Zirconium oxides
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Fe-added zirconium oxide electrocatalyst was synthesized using pyrazine carboxylic acid for catalyzing oxygen reduction reactions (ORR) in acidic media. The optimization of the Fe-additive ratio led to the highest onset potential of 0.917 V for ORR at −10 mA gcat−1 compared to that of previous studies. The high ORR activity was due to the formation of high-quality active sites with Fe addition in monoclinic ZrO2 and a suitable electron supply path created through carbon deposited using a pyrazine carboxylic acid complex.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.220283