DataVXACS Applied Materials & InterfacesPaper
journal article·2021-09-08Open access

Bifunctional Oxygen Electrocatalysis on Mixed Metal Phthalocyanine-Modified Carbon Nanotubes Prepared via Pyrolysis

Yogesh Kumar, Elo Kibena-Põldsepp, Jekaterina Kozlova, Mihkel Rähn, Alexey Treshchalov, Arvo Kikas, Vambola Kisand, Jaan Aruväli, Aile Tamm, John C. Douglin, Scott J. Folkman, Ilario Gelmetti, Felipe A. Garcés-Pineda, José Ramón Galán-Mascarós, Dario R. Dekel, Kaido Tammeveski

ACS Applied Materials & Interfaces· Volume 13· Issue 35
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Abstract

Non-precious-metal catalysts are promising alternatives for Pt-based cathode materials in low-temperature fuel cells, which is of great environmental importance. Here, we have investigated the bifunctional electrocatalytic activity toward the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) of mixed metal (FeNi; FeMn; FeCo) phthalocyanine-modified multiwalled carbon nanotubes (MWCNTs) prepared by a simple pyrolysis method. Among the bimetallic catalysts containing nitrogen derived from corresponding metal phthalocyanines, we report the excellent ORR activity of FeCoN-MWCNT and FeMnN-MWCNT catalysts with the ORR onset potential of 0.93 V and FeNiN-MWCNT catalyst for the OER having EOER = 1.58 V at 10 mA cm-2. The surface morphology, structure, and elemental composition of the prepared catalysts were examined with scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The FeCoN-MWCNT and FeMnN-MWCNT catalysts were prepared as cathodes and tested in anion-exchange membrane fuel cells (AEMFCs). Both catalysts displayed remarkable AEMFC performance with a peak power density as high as 692 mW cm-2 for FeCoN-MWCNT.
Source: europepmc · Quality: candidate unverified · Source record ↗

Research context

Energy storageNanomaterialsCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia

Institute of Physics, University of Tartu, W. Ostwald Street 1, 50411 Tartu, Estonia

Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise 46, 51014 Tartu, Estonia

The Wolfson Department of Chemical Engineering, Technion─Israel Institute of Technology, 3200003 Haifa, Israel

Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), 43007 Tarragona, Spain

Catalan Institution for Research and Advanced Studies (ICREA), Passeig Llüis Companys 23, 08010 Barcelona, Spain

The Nancy & Stephen Grand Technion Energy Program (GTEP), Technion─Israel Institute of Technology, 3200003 Haifa, Israel

Funding

Israel Science Foundation · Nancy and Stephen Grand Technion Energy Program · European Regional Development Fund · Israel National Research Center for Electrochemical Propulsion · Council for Higher Education · Eesti Teadusagentuur

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