Gas diffusion layer, electrochemical cell having such a gas diffusion layer, and electrolyzer
AssigneeSiemens Aktiengesellschaft
InventorsAlexander Hahn, Alexander Spies, Jochen Straub
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Abstract
A gas diffusion layer is arranged between a bipolar plate and an electrode of an electrochemical cell and includes at least two layers which are layered one on top of the other layer. At least one of the two layers is designed as a spring component having a progressive spring characteristic curve.
Claims17
A gas diffusion layer arranged between a bipolar plate and an electrode of an electrochemical cell, said gas diffusion layer comprising:
- at least two separate layers formed as elements which are separate from each other, with one of the separate layers being layered on top of another one of the separate layers;
- and
- a spring component forming at least one of the at least two separate layers, said spring component having a progressive spring characteristic curve selected so as to achieve a deformation in a range of a normal contact pressure of 5-25 bars.
An electrochemical cell, comprising:
- a bipolar plate;
- an electrode;
- and
- a gas diffusion layer arranged between the bipolar plate and the electrode, said gas diffusion layer including at least two separate layers formed as elements which are separate from each other, with one of the layers being layered on top of another one of the layers, and a spring component forming at least one of the at least two separate layers, said spring component having a progressive spring characteristic curve selected so as to achieve a deformation in a range of a normal contact pressure of 5-25 bars.
An electrolyzer, comprising a PEM electrolysis cell which includes a bipolar plate, an electrode, and a gas diffusion layer arranged between the bipolar plate and the electrode, said gas diffusion layer including at least two separate layers formed as elements which are separate from each other, with one of the layers being layered on top of another one of the layers, and a spring component forming at least one of the at least two layers, said spring component having a progressive spring characteristic curve selected so as to achieve a deformation in a range of a normal contact pressure of 5-25 bars.
Dependencies are inferred from the claim text.