The catalytic centre of transition metal chalcogenides vis-à-vis the oxygen reduction reaction: An in situ electrochemical EXAFS study

N. Alonso-Vante; M. Fieber-Erdmann; H. Rossner; E. Holub-Krappe; Ch Giorgetti; A. Tadjeddine; E. Dartyge; A. Fontaine; R. Frahm

doi:10.1051/jp4:1997266

The catalytic centre of transition metal chalcogenides vis-à-vis the oxygen reduction reaction: An in situ electrochemical EXAFS study

N. Alonso-Vante
, M. Fieber-Erdmann
, H. Rossner
, E. Holub-Krappe
, Ch Giorgetti
, A. Tadjeddine
, E. Dartyge
, A. Fontaine
, R. Frahm

Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
Université Paris-Saclay
c/o DESY

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The Chevrel type chalcogenide with the stoichiometry Mo_6-xM_xX₈ (M=transition metal, e.g., M_x=Ru₂; X=Chalcogene atom, e.g., S, Se) containing octahedral mixed-metal clusters of transition-metal atoms was investigated with respect to the oxygen reduction process in an in situ electrochemical enviroment via the EXAFS technique. The spectra analysis on Ru and Mo edges as a function of applied electrode potential revealed that ruthenium centers were preferentially modified by the presence of oxygen in the electrolyte. The variation in distance between Ru-(Ru, Mo) was more sensitive in oxygen saturated solution as compared to Mo-(Ru, Mo) and Ru-Se.

Original language	English
Pages (from-to)	C2-887-C2-889
Journal	Journal De Physique. IV : JP
Volume	7
Issue number	2 Part 2
DOIs	https://doi.org/10.1051/jp4:1997266
Publication status	Published - 1 Jan 1997
Externally published	Yes

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Alonso-Vante, N., Fieber-Erdmann, M., Rossner, H., Holub-Krappe, E., Giorgetti, C., Tadjeddine, A., Dartyge, E., Fontaine, A., & Frahm, R. (1997). The catalytic centre of transition metal chalcogenides vis-à-vis the oxygen reduction reaction: An in situ electrochemical EXAFS study. Journal De Physique. IV : JP, 7(2 Part 2), C2-887-C2-889. https://doi.org/10.1051/jp4:1997266

@article{35f305fe276d4e9b9920ebeb64891b9c,

title = "The catalytic centre of transition metal chalcogenides vis-{\`a}-vis the oxygen reduction reaction: An in situ electrochemical EXAFS study",

abstract = "The Chevrel type chalcogenide with the stoichiometry Mo6-xMxX8 (M=transition metal, e.g., Mx=Ru2; X=Chalcogene atom, e.g., S, Se) containing octahedral mixed-metal clusters of transition-metal atoms was investigated with respect to the oxygen reduction process in an in situ electrochemical enviroment via the EXAFS technique. The spectra analysis on Ru and Mo edges as a function of applied electrode potential revealed that ruthenium centers were preferentially modified by the presence of oxygen in the electrolyte. The variation in distance between Ru-(Ru, Mo) was more sensitive in oxygen saturated solution as compared to Mo-(Ru, Mo) and Ru-Se.",

author = "N. Alonso-Vante and M. Fieber-Erdmann and H. Rossner and E. Holub-Krappe and Ch Giorgetti and A. Tadjeddine and E. Dartyge and A. Fontaine and R. Frahm",

year = "1997",

month = jan,

day = "1",

doi = "10.1051/jp4:1997266",

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volume = "7",

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Alonso-Vante, N, Fieber-Erdmann, M, Rossner, H, Holub-Krappe, E, Giorgetti, C, Tadjeddine, A, Dartyge, E, Fontaine, A & Frahm, R 1997, 'The catalytic centre of transition metal chalcogenides vis-à-vis the oxygen reduction reaction: An in situ electrochemical EXAFS study', Journal De Physique. IV : JP, vol. 7, no. 2 Part 2, pp. C2-887-C2-889. https://doi.org/10.1051/jp4:1997266

TY - JOUR

T1 - The catalytic centre of transition metal chalcogenides vis-à-vis the oxygen reduction reaction

T2 - An in situ electrochemical EXAFS study

AU - Alonso-Vante, N.

AU - Fieber-Erdmann, M.

AU - Rossner, H.

AU - Holub-Krappe, E.

AU - Giorgetti, Ch

AU - Tadjeddine, A.

AU - Dartyge, E.

AU - Fontaine, A.

AU - Frahm, R.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - The Chevrel type chalcogenide with the stoichiometry Mo6-xMxX8 (M=transition metal, e.g., Mx=Ru2; X=Chalcogene atom, e.g., S, Se) containing octahedral mixed-metal clusters of transition-metal atoms was investigated with respect to the oxygen reduction process in an in situ electrochemical enviroment via the EXAFS technique. The spectra analysis on Ru and Mo edges as a function of applied electrode potential revealed that ruthenium centers were preferentially modified by the presence of oxygen in the electrolyte. The variation in distance between Ru-(Ru, Mo) was more sensitive in oxygen saturated solution as compared to Mo-(Ru, Mo) and Ru-Se.

AB - The Chevrel type chalcogenide with the stoichiometry Mo6-xMxX8 (M=transition metal, e.g., Mx=Ru2; X=Chalcogene atom, e.g., S, Se) containing octahedral mixed-metal clusters of transition-metal atoms was investigated with respect to the oxygen reduction process in an in situ electrochemical enviroment via the EXAFS technique. The spectra analysis on Ru and Mo edges as a function of applied electrode potential revealed that ruthenium centers were preferentially modified by the presence of oxygen in the electrolyte. The variation in distance between Ru-(Ru, Mo) was more sensitive in oxygen saturated solution as compared to Mo-(Ru, Mo) and Ru-Se.

U2 - 10.1051/jp4:1997266

DO - 10.1051/jp4:1997266

M3 - Article

AN - SCOPUS:4243673421

SN - 1155-4339

VL - 7

SP - C2-887-C2-889

JO - Journal De Physique. IV : JP

JF - Journal De Physique. IV : JP

IS - 2 Part 2

ER -

The catalytic centre of transition metal chalcogenides vis-à-vis the oxygen reduction reaction: An in situ electrochemical EXAFS study

Abstract

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