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Main Title: An efficient bifunctional two-component catalyst for oxygen reduction and oxygen evolution in reversible fuel cells, electrolyzers and rechargeable air electrodes
Author(s): Dresp, Sören
Luo, Fang
Schmack, Roman
Kühl, Stefanie
Gliech, Manuel
Strasser, Peter
Type: Article
Language Code: en
Abstract: We report on a non-precious, two-phase bifunctional oxygen reduction and evolution (ORR and OER) electrocatalyst with previously unachieved combined roundtrip catalytic reactivity and stability for use in oxygen electrodes of unitized reversible fuel cell/electrolyzers or rechargeable metal-air batteries. The combined OER and ORR overpotential, total, at 10 mA cm(-2) was a record low value of 0.747 V. Rotating Ring Disk Electrode (RRDE) measurements revealed a high faradaic selectivity for the 4 electron pathways, while subsequent continuous MEA tests in reversible electrolyzer cells confirmed the excellent catalyst reactivity rivaling the state-of-the-art combination of iridium (OER) and platinum (ORR).
Issue Date: 2016
Date Available: 24-Oct-2017
DDC Class: 690 Hausbau, Bauhandwerk
Sponsor/Funder: BMBF, 03SF0433A, Effiziente edelmetallfreie Katalysatorsysteme basierend auf Mangan und Eisen für flexible Meerwasserelektrolyseure
BMBF, 03SF0527A, LoPlaKat
Journal Title: Energy & environmental science
Publisher: Royal Society of Chemistry
Publisher Place: Cambridge
Volume: 9
Issue: 6
Publisher DOI: 10.1039/c6ee01046f
Page Start: 2020
Page End: 2024
EISSN: 1754-5706
ISSN: 1754-5692
Notes: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
Appears in Collections:FG Technische Chemie » Publications

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