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  Optimization of catalytic active sites in non-collinear antiferromagnetic Mn3Pt bulk single-crystal

Li, G., Yang, Q., Manna, K., Fu, C., Deniz, H., Jena, J., et al. (2019). Optimization of catalytic active sites in non-collinear antiferromagnetic Mn3Pt bulk single-crystal. Materials Today Physics, 10: 1000137, pp. 1-6. doi:10.1016/j.mtphys.2019.100137.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-F267-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-1C75-9
Genre: Journal Article

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 Creators:
Li, Guowei1, Author              
Yang, Qun1, Author              
Manna, Kaustuv1, Author              
Fu, Chenguang1, Author              
Deniz, H.2, Author
Jena, J.2, Author
Li, F.2, Author
Parkin, S.2, Author
Auffermann, Gudrun3, Author              
Sun, Yan1, Author              
Felser, Claudia4, Author              
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              
3Gudrun Auffermann, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863432              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: Electrons in non-collinear antiferromagnets exhibit abundant transfer properties of interest to next-generation innovative devices. As two of the most important properties of electrons, both charge and spin must be simultaneously transferred. This will certainly influence many surface reaction processes like the hydrogen evolution reaction (HER). We grow a Mn3Pt bulk single-crystal that having a room-temperature long-range magnetic order at the Mn sites, which showed Pt-like activity and excellent stability as a catalyst for HER. Experiments and density-functional-theory calculations reveal that the electronic structure can be modified owing to the spin polarization of the Mn atoms. This further affects the adsorption energy of the reaction intermediate by tailoring the arrangement and filling of d-electrons. With this strategy, a similar Gibbs free energy for hydrogen adsorption was obtained between Mn–Mn hollow sites and Pt sites. In other words, more actives sites beyond Pt are created. This study paves the way for the design of high-efficiency electrocatalysts through the interplay between the spin states and the adsorption-desorption behaviors.

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Language(s): eng - English
 Dates: 2019-09-242019-09-24
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1016/j.mtphys.2019.100137
 Degree: -

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Title: Materials Today Physics
  Abbreviation : Mater. Today Phys.
Source Genre: Journal
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Publ. Info: Amsterdam, The Netherlands : Elsevier
Pages: 100137 Volume / Issue: 10 Sequence Number: 1000137 Start / End Page: 1 - 6 Identifier: ISSN: 2542-5293
CoNE: https://pure.mpg.de/cone/journals/resource/2542-5293