Journal Article

FZJ-2016-03349

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png A Simple Approach towards High-Performance Perovskite-Based Bifunctional Oxygen Electrocatalysts

Elumeeva, K. ; Masa, J. ; Tietz, F.FZJ* ; Yang, F. ; Xia, W. ; Muhler, M. ; Schuhmann, W. (Corresponding author)

2016
Wiley-VCH Weinheim

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Please use a persistent id in citations: doi:10.1002/celc.201500353

Abstract: To accelerate the large-scale commercialization of electrochemical energy storage and conversion technologies through water splitting and regeneration in reversible fuel cells, cost-effective, highly efficient, and durable reversible oxygen electrodes are required. We report a comparatively simple approach to modify a group of oxygen-evolving perovskites based on lanthanum cobaltite into effective bifunctional systems through partial atom substitution, which, upon intermixing with nitrogen-doped carbon nanotubes, achieve remarkably low round-trip overvoltage of <850 mV in the electrocatalysis of oxygen reduction and oxygen evolution in an alkaline electrolyte, KOH (0.1 m). Besides the bifunctional electrocatalytic performance, the composite systems with a low Fe content possessed promising long-term stability.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)

Research Program(s):

1. 134 - Electrolysis and Hydrogen (POF3-134) (POF3-134)

Appears in the scientific report 2016

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Database coverage:
Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; No Authors Fulltext ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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