%0 Journal Article
%A Elumeeva, Karina
%A Masa, Justus
%A Tietz, Frank
%A Yang, Fengkai
%A Xia, Wei
%A Muhler, Martin
%A Schuhmann, Wolfgang
%T A Simple Approach towards High-Performance Perovskite-Based Bifunctional Oxygen Electrocatalysts
%J ChemElectroChem
%V 3
%N 1
%@ 2196-0216
%C Weinheim
%I Wiley-VCH
%M FZJ-2016-03349
%P 138 - 143
%D 2016
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000371253500018
%R 10.1002/celc.201500353
%U https://juser.fz-juelich.de/record/810760