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

Yogesh Kumar | Zendy; Elo KibenaPõldsepp | Zendy; Jekaterina Kozlova | Zendy; Mihkel Rähn | Zendy; Alexey Treshchalov | Zendy; Arvo Kikas | Zendy; Vambola Kisand | Zendy; Jaan Aruväli | Zendy; Aile Tamm | Zendy; John C. Douglin | Zendy; Scott J. Folkman | Zendy; Ilario Gelmetti | Zendy; Felipe A. GarcésPineda | Zendy; José Ramón GalánMascarós | Zendy; Dario R. Dekel | Zendy; Kaido Tammeveski | Zendy

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

Author(s) -

Yogesh Kumar,

Elo KibenaPõldsepp,

Jekaterina Kozlova,

Mihkel Rähn,

Alexey Treshchalov,

Arvo Kikas,

Vambola Kisand,

Jaan Aruväli,

Aile Tamm,

John C. Douglin,

Scott J. Folkman,

Ilario Gelmetti,

Felipe A. GarcésPineda,

José Ramón GalánMascarós,

Dario R. Dekel,

Kaido Tammeveski

Publication year - 2021

Publication title -

acs applied materials and interfaces

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.535

H-Index - 228

eISSN - 1944-8252

pISSN - 1944-8244

DOI - 10.1021/acsami.1c06737

Subject(s) - bifunctional , bimetallic strip , materials science , electrocatalyst , catalysis , carbon nanotube , pyrolysis , x ray photoelectron spectroscopy , phthalocyanine , chemical engineering , oxygen evolution , proton exchange membrane fuel cell , thermogravimetric analysis , inorganic chemistry , carbon fibers , metal , electrochemistry , nanotechnology , electrode , chemistry , organic chemistry , composite material , metallurgy , composite number , engineering

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 E OER = 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.

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