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  4. Metal‐Rich Chalcogenides for Electrocatalytic Hydrogen Evolution
 
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2020
Journal Article
Titel

Metal‐Rich Chalcogenides for Electrocatalytic Hydrogen Evolution

Titel Supplements
Activity of Electrodes and Bulk Materials
Abstract
Metal‐rich chalcogenides composed of highly abundant elements recently emerged as promising catalysts for the electrocatalytic hydrogen evolution reaction (HER). Many of these materials benefit from a high intrinsic conductivity as compared to their chalcogen‐rich congeners, greatly reducing the necessity for conductive additives or sophisticated nanostructuring. Herein, we showcase the high potential of metal‐rich transition‐metal chalcogenides for the electrocatalytic hydrogen formation by summarizing the recent progress achieved with M9S8 (pentlandite type) and M3S2 (heazlewoodite type) based materials, which represent the most frequently applied compositions for this purpose. By a detailed electrochemical comparison of bulk as well as pellet electrodes of metal‐rich Fe4.5Ni4.5S8, we also aim at raising awareness in the community for the inherent differences in catalytic properties of the materials themselves and those of the fabricated electrodes, a point that is often disregarded in reports on HER‐catalyst systems.
Author(s)
Siegmund, Daniel
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT
Blanc, Niclas
Ruhr-Universität Bochum
Smialkowksi, Mathias
Ruhr-Universität Bochum
Tschulik, Kristina
Ruhr-Universität Bochum
Apfel, Ulf-Peter
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT
Zeitschrift
ChemElectroChem
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DOI
10.1002/celc.201902125
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Language
English
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Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT
Tags
  • cathode materials

  • electrocatalysis

  • electrode design

  • electrode material

  • hydrogen evolution reaction

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