Highly Active Epitaxial La(1–x)SrxMnO3 Surfaces for the Oxygen Reduction Reaction: Role of Charge Transfer

2015 ◽  
Vol 6 (8) ◽  
pp. 1435-1440 ◽  
Author(s):  
Kelsey A. Stoerzinger ◽  
Weiming Lü ◽  
Changjian Li ◽  
Ariando ◽  
T. Venkatesan ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Highly Active

Facile synthesis of highly active and durable PdM/C (M = Fe, Mn) nanocatalysts for the oxygen reduction reaction in an alkaline medium

2016 ◽  
Vol 4 (21) ◽  
pp. 8337-8349 ◽  
Author(s):  
Yaovi Holade ◽  
Rodrigo G. da Silva ◽  
Karine Servat ◽  
Teko W. Napporn ◽  
Christine Canaff ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Alkaline Medium ◽  
Crucial Role ◽  
Reduction Reaction ◽  
Facile Synthesis ◽  
Highly Active

We report decisive advances in costly-robust Pd-based ORR nanocatalysts preparation, which enlighten us on the crucial role of nanowire oxides.

scholarly journals Direct Spectroscopy for Probing the Critical Role of Partial Covalency in Oxygen Reduction Reaction for Cobalt-Manganese Spinel Oxides

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 577 ◽  
Author(s):  
Xinghui Long ◽  
Pengfei Yu ◽  
Nian Zhang ◽  
Chun Li ◽  
Xuefei Feng ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Sites ◽  
Critical Role ◽  
Catalytic Efficiency ◽  
Systematic Investigation ◽  
Reduction Reaction ◽  
Highly Active ◽  
Spinel Oxides

Nanocrystalline multivalent metal spinels are considered as attractive non-precious oxygen electrocatalysts. Identifying their active sites and understanding their reaction mechanisms are essential to explore novel transition metal (TM) oxides catalysts and further promote their catalytic efficiency. Here we report a systematic investigation, by means of soft X-ray absorption spectroscopy (sXAS), on cubic and tetragonal CoxMn3-xO4 (x = 1, 1.5, 2) spinel oxides as a family of highly active catalysts for the oxygen reduction reaction (ORR). We demonstrate that the ORR activity for oxide catalysts primarily correlates to the partial covalency of between O 2p orbital with Mn4+ 3d t2g-down/eg-up, Mn3+ 3d eg-up and Co3+ 3d eg-up orbitals in octahedron, which is directly revealed by the O K-edge sXAS. Our findings propose the critical influences of the partial covalency between oxygen 2p band and specific metal 3d band on the competition between intermediates displacement of the ORR, and thus highlight the importance of electronic structure in controlling oxide catalytic activity.

Theoretical Modelling and Facile Synthesis of a Highly Active Boron-Doped Palladium Catalyst for the Oxygen Reduction Reaction

2016 ◽  
Vol 55 (24) ◽  
pp. 6842-6847 ◽  
Author(s):  
Tat Thang Vo Doan ◽  
Jingbo Wang ◽  
Kee Chun Poon ◽  
Desmond C. L. Tan ◽  
Bahareh Khezri ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Palladium Catalyst ◽  
Reduction Reaction ◽  
Theoretical Modelling ◽  
Facile Synthesis ◽  
Highly Active ◽  
Boron Doped

Tunable mesoporous manganese oxide for high performance oxygen reduction and evolution reactions

2016 ◽  
Vol 4 (2) ◽  
pp. 620-631 ◽  
Author(s):  
Islam M. Mosa ◽  
Sourav Biswas ◽  
Abdelhamid M. El-Sawy ◽  
Venkatesh Botu ◽  
Curtis Guild ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Manganese Oxide ◽  
Oxygen Reduction ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Reduction Reaction ◽  
Noble Metal Catalysts ◽  
Highly Active ◽  
State Of Art

Understanding the origin of manganese oxide activity for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is a key step towards rationally designing of highly active catalysts capable of competing with the widely used, state-of-art noble metal catalysts.

The role of iron in the preparation and oxygen reduction reaction activity of nitrogen-doped carbon

2015 ◽  
Vol 51 (12) ◽  
pp. 2450-2453 ◽  
Author(s):  
Dae-Soo Yang ◽  
Min Young Song ◽  
Kiran Pal Singh ◽  
Jong-Sung Yu
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Carbon Sources ◽  
Reduction Reaction ◽  
Acidic Media ◽  
Oxygen Reduction Reaction Activity ◽  
Exact Role ◽  
Ordered Mesoporous ◽  
Nitrogen Doped Carbon

The exact role of iron in catalyzing oxygen reduction reaction in both alkaline and acidic media is portrayed with unique platelet ordered mesoporous carbon prepared using Fe-phthalocyanine as iron, nitrogen and carbon sources.

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