On the role of metals in nitrogen‐doped carbon electrocatalysts for oxygen reduction

J Masa, W **a, M Muhler… - Angewandte Chemie …, 2015 - Wiley Online Library
The notion of metal‐free catalysts is used to refer to carbon materials modified with
nonmetallic elements. However, some claimed metal‐free catalysts are prepared using …

Fundamental mechanistic understanding of electrocatalysis of oxygen reduction on Pt and non‐Pt surfaces: acid versus alkaline media

N Ramaswamy, S Mukerjee - Advances in Physical Chemistry, 2012 - Wiley Online Library
Complex electrochemical reactions such as Oxygen Reduction Reaction (ORR) involving
multi‐electron transfer is an electrocatalytic inner‐sphere electron transfer process that …

Structure of the catalytic sites in Fe/N/C-catalysts for O 2-reduction in PEM fuel cells

UI Kramm, J Herranz, N Larouche, TM Arruda… - Physical Chemistry …, 2012 - pubs.rsc.org
Fe-based catalytic sites for the reduction of oxygen in acidic medium have been identified by
57Fe Mössbauer spectroscopy of Fe/N/C catalysts containing 0.03 to 1.55 wt% Fe, which …

Correlations between Mass Activity and Physicochemical Properties of Fe/N/C Catalysts for the ORR in PEM Fuel Cell via 57Fe Mössbauer Spectroscopy and Other …

UI Kramm, M Lefèvre, N Larouche… - Journal of the …, 2014 - ACS Publications
The aim of this work is to clarify the origin of the enhanced PEM-FC performance of catalysts
prepared by the procedures described in Science 2009, 324, 71 and Nat. Commun. 2011, 2 …

Nitrogen-doped graphene oxide electrocatalysts for the oxygen reduction reaction

JH Dumont, U Martinez, K Artyushkova… - ACS Applied Nano …, 2019 - ACS Publications
Platinum group metal-free (PGM-free) electrocatalysts for the oxygen reduction reaction
(ORR) often exhibit a complex functionalized graphitic structure. Because of this complex …

Iron porphyrin-based cathode catalysts for polymer electrolyte membrane fuel cells: Effect of NH3 and Ar mixtures as pyrolysis gases on catalytic activity and stability

H Meng, N Larouche, M Lefèvre, F Jaouen… - Electrochimica …, 2010 - Elsevier
Ten different catalysts were prepared by loading 66wt% ClFeTMPP on N330, a furnace
grade carbon black, and pyrolyzing this catalyst precursor for 10min at 950° C in a NH3/Ar …

Graphite intercalation compounds derived by green chemistry as oxygen reduction reaction catalysts

J Zhao, JH Dumont, U Martinez… - … Applied Materials & …, 2020 - ACS Publications
Precious group metal (PGM) catalysts such as Pt supported on carbon supports are
expensive catalysts utilized for the oxygen reduction reaction (ORR) due to their unmatched …

Cobalt and iron complexes with N-heterocyclic ligands as pyrolysis precursors for oxygen reduction catalysts

F Roncaroli, ES Dal Molin, FA Viva, MM Bruno… - Electrochimica …, 2015 - Elsevier
Cobalt and Iron based catalysts for the Oxygen Reduction Reaction (ORR) are a promising
alternative to the use of Pt in Polymer Electrolyte Fuel Cells (PEMFC). A systematic study on …

Activity and stability in proton exchange membrane fuel cells of iron-based cathode catalysts synthesized with addition of carbon fibers

N Larouche, R Chenitz, M Lefèvre, E Proietti… - Electrochimica …, 2014 - Elsevier
In this work, we report attempts to improve mass performance and durability of a catalyst
prepared by ball milling a precursor consisting of a zinc-based zeolitic imidazolate …

Molecular-level insights into oxygen reduction catalysis by graphite-conjugated active sites

ND Ricke, AT Murray, JJ Shepherd, MG Welborn… - ACS …, 2017 - ACS Publications
Using a combination of experimental and computational investigations, we assemble a
consistent mechanistic model for the oxygen reduction reaction (ORR) at molecularly well …