Disclosing Pt-Bimetallic Alloy Nanoparticle Surface Lattice Distortion with Electrochemical Probes

被引:41
作者
Chattot, Raphael [1 ,2 ]
Martens, Isaac [2 ]
Scohy, Marion [1 ]
Herranz, Juan [3 ]
Drnec, Jakub [2 ]
Maillard, Frederic [1 ]
Dubau, Laetitia [1 ]
机构
[1] Univ Grenoble Alpes, Univ Savoie Mont Blanc, CNRS, Grenoble INP,Inst Engn,LEPMI, F-38000 Grenoble, France
[2] ESRF, Beamline ID31, F-38043 Grenoble, France
[3] Paul Scherrer Inst, Electrochem Lab, CH-5232 Villigen, Switzerland
关键词
OXYGEN REDUCTION REACTION; PLATINUM-NICKEL NANOWIRES; CO MONOLAYER OXIDATION; NI AEROGELS; ADSORPTION; HYDROGEN; ELECTROCATALYSTS; SEGREGATION; DURABILITY; REACTIVITY;
D O I
10.1021/acsenergylett.9b02287
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Structural defects are of significant importance in (electro)catalysis, as they provide sites of unusually high activity that find applications in many key electrochemical processes. However, tools to characterize surface defects remain scarce and complex, especially for nanocatalysts where classical methods such as transmission electron microscopy or X-ray scattering are limited in their ability to probe the structure and distribution of the active surface sites. Herein, we show that the ratio between the COads stripping charge (Q(CO)) and the charge required to desorb under-potentially deposited H atoms (Q(H)) in structurally disordered Pt-based nanocatalysts scales almost linearly with the surface distortion descriptor obtained via advanced physical methods. This trend is valid in both rotating disk electrode configuration and in a real fuel cell device, thus providing the scientific community with a powerful and versatile approach for semiquantitative estimation of the surface lattice distortion in Pt-based catalysts without the need for exhaustive structural characterization.
引用
收藏
页码:162 / 169
页数:15
相关论文
共 62 条
  • [21] Impact of film drying procedures on RDE characterization of Pt/VC electrocatalysts
    Garsany, Yannick
    Singer, Irwin L.
    Swider-Lyons, Karen E.
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2011, 662 (02) : 396 - 406
  • [22] Experimental Methods for Quantifying the Activity of Platinum Electrocatalysts for the Oxygen Reduction Reaction
    Garsany, Yannick
    Baturina, Olga A.
    Swider-Lyons, Karen E.
    Kocha, Shyam S.
    [J]. ANALYTICAL CHEMISTRY, 2010, 82 (15) : 6321 - 6328
  • [24] Near-surface alloys for hydrogen fuel cell applications
    Greeley, J
    Mavrikakis, M
    [J]. CATALYSIS TODAY, 2006, 111 (1-2) : 52 - 58
  • [25] Concentration and Strain Fields inside a Ag/Au Core-Shell Nanowire Studied by Coherent X-ray Diffraction
    Haag, Sabine T.
    Richard, Marie-Ingrid
    Welzel, Udo
    Favre-Nicolin, Vincent
    Balmes, Olivier
    Richter, Gunther
    Mittemeijer, Eric J.
    Thomas, Olivier
    [J]. NANO LETTERS, 2013, 13 (05) : 1883 - 1889
  • [26] Durability of Unsupported Pt-Ni Aerogels in PEFC Cathodes
    Henning, Sebastian
    Herranz, Juan
    Ishikawa, Hiroshi
    Kim, Bae Jung
    Abbott, Daniel
    Kuehn, Laura
    Eychmueller, Alexander
    Schmidt, Thomas J.
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2017, 164 (12) : F1136 - F1141
  • [27] Unsupported Pt-Ni Aerogels with Enhanced High Current Performance and Durability in Fuel Cell Cathodes
    Henning, Sebastian
    Ishikawa, Hiroshi
    Kuehn, Laura
    Herranz, Juan
    Mueller, Elisabeth
    Eychmueller, Alexander
    Schmidt, Thomas J.
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2017, 56 (36) : 10707 - 10710
  • [28] Pt-Ni Aerogels as Unsupported Electrocatalysts for the Oxygen Reduction Reaction
    Henning, Sebastian
    Kuehn, Laura
    Herranz, Juan
    Durst, Julien
    Binninger, Tobias
    Nachtegaal, Maarten
    Werheid, Matthias
    Liu, Wei
    Adam, Marion
    Kaskel, Stefan
    Eychmueller, Alexander
    Schmidt, Thomas J.
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2016, 163 (09) : F998 - F1003
  • [29] Tuning Adsorption via Strain and Vertical Ligand Effects
    Hoster, Harry E.
    Alves, Otavio B.
    Koper, Marc T. M.
    [J]. CHEMPHYSCHEM, 2010, 11 (07) : 1518 - 1524
  • [30] Mechanism of pH-dependent activation of the sodium-proton antiporter NhaA
    Huang, Yandong
    Chen, Wei
    Dotson, David L.
    Beckstein, Oliver
    Shen, Jana
    [J]. NATURE COMMUNICATIONS, 2016, 7