Coating and layer system, and bipolar plate, fuel cell and electrolyser
AssigneeSchaeffler Technologies AG & Co. KG
InventorsLadislaus Dobrenizki, Yashar Musayev, Tim Hosenfeldt, Detlev Repenning
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Abstract
A coating for a bipolar plate of a fuel cell or an electrolyzer contains a homogeneous or heterogeneous solid metal solution. The coating contains at least 15% Iridium and up to 84% Ruthenium with a total combined concentration of Iridium and Ruthenium of at least 99% (atomic). The coating also contains at least one of Nitrogen, Carbon, and Flourine. The coating may contain traces of Oxygen or Hydrogen. The coating may be used as part of a layer system that includes one or more undercoat layers and the coating as a covering layer.
Claims19
A coating for an energy converter, wherein the coating comprises a homogeneous or heterogeneous solid metallic solution which either
- contains a first chemical element of iridium in a concentration of at least 99 at. % or
- contains a first chemical element of iridium and a second chemical element of ruthenium, with the first chemical element and the second chemical element being present in a total concentration of at least 99 at. %,
- and also contains at least one further nonmetallic chemical element selected from the group consisting of nitrogen, carbon, and fluorine present in a concentration in the range from 0.1 to 1 at. %, with oxygen and hydrogen being additionally present only in traces.
Dependencies are inferred from the claim text.