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US 2023/0411660 A1Published application
Membrane electrode assembly combined roll, membrane electrode assembly, and polymer electrolyte fuel cell
AssigneeToppan Inc.
InventorYuki IGARASHI
Life of this patent
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Abstract
A combined roll is a roll of a wound strip that includes a plurality of layered bodies each including a polymer electrolyte membrane and a pair of electrode catalyst layers, and a supporting member including a plurality of frame units arranged in a single direction, with each frame unit supporting one layered body. The frame unit surrounds the electrode catalyst layers and is in contact with the electrode catalyst layers, with the outer periphery of the polymer electrolyte membrane held inside the frame unit in the thickness direction.
Claims8
A membrane electrode assembly combined roll comprising a wound strip, the strip including
- a plurality of layered bodies each including a polymer electrolyte membrane and a pair of electrode catalyst layers in contact with the polymer electrolyte membrane with the polymer electrolyte membrane sandwiched therebetween in a thickness direction, and
- a supporting member including a plurality of frame units arranged continuously in a single direction, with each frame unit supporting one of the layered bodies,
- wherein as viewed in the thickness direction of the polymer electrolyte membrane, the polymer electrolyte membrane has an outer periphery being a part extending beyond the electrode catalyst layers, with the frame units each having an outer shape larger than an outer shape of the polymer electrolyte membrane,
- the frame unit surrounds the electrode catalyst layers and is in contact with the electrode catalyst layers, with the outer periphery held inside the frame unit in the thickness direction, and
- as viewed in the thickness direction of the polymer electrolyte membrane, the outer periphery has a width of 1 mm or more, and a ratio of an area of the outer periphery to an area of the electrode catalyst layer is less than or equal to 0.2.
2 more elements
A membrane electrode assembly combined roll comprising a wound strip, the strip including
- a plurality of layered bodies each including a polymer electrolyte membrane and a pair of electrode catalyst layers in contact with the polymer electrolyte membrane with the polymer electrolyte membrane sandwiched therebetween in a thickness direction,
- a plurality of frame units arranged in a single direction, the plurality of frame units each supporting one of the layered bodies, and
- an attachment member configured to join adjacent ones of the frame units together,
- wherein as viewed in the thickness direction of the polymer electrolyte membrane, the polymer electrolyte membrane has an outer periphery being a part extending beyond the electrode catalyst layers, with the frame units each having an outer shape larger than an outer shape of the polymer electrolyte membrane, and
- the frame unit surrounds the electrode catalyst layers and is in contact with the electrode catalyst layers, with the outer periphery held inside the frame unit in the thickness direction.
2 more elements
A membrane electrode assembly, comprising:
- a layered body including a polymer electrolyte membrane and a pair of electrode catalyst layers in contact with the polymer electrolyte membrane with the polymer electrolyte membrane sandwiched therebetween in a thickness direction;
- and
- a frame unit configured to support the layered body,
- wherein as viewed in the thickness direction of the polymer electrolyte membrane, the polymer electrolyte membrane has an outer periphery being a part extending beyond the electrode catalyst layers, with the frame unit having an outer shape larger than an outer shape of the polymer electrolyte membrane,
- the frame unit surrounds the electrode catalyst layers and is in contact with the electrode catalyst layers, with the outer periphery held inside the frame unit in the thickness direction,
- as viewed in the thickness direction of the polymer electrolyte membrane, the outer periphery has a width of 1 mm or more, whereas a ratio of an area of the outer periphery to an area of the electrode catalyst layer is less than or equal to 0.2, and
- the membrane electrode assembly has an end surface positioned on an edge of the frame unit and being a single surface continuous in the thickness direction.
4 more elements
A membrane electrode assembly, comprising:
- a layered body including a polymer electrolyte membrane and a pair of electrode catalyst layers in contact with the polymer electrolyte membrane with the polymer electrolyte membrane sandwiched therebetween in a thickness direction;
- a frame unit configured to support the layered body;
- and
- an attachment member at an edge of the frame unit and extending along an outer periphery of the frame unit as viewed in the thickness direction of the polymer electrolyte membrane,
- wherein as viewed in the thickness direction of the polymer electrolyte membrane, the polymer electrolyte membrane has an outer periphery being a part extending beyond the electrode catalyst layers, with the frame unit having an outer shape larger than an outer shape of the polymer electrolyte membrane,
- the frame unit surrounds the electrode catalyst layers and is in contact with the electrode catalyst layers, with the outer periphery held inside the frame unit in the thickness direction, and
- the attachment member contains a glue or an adhesive and is joined to the frame unit.
4 more elements
Dependencies are inferred from the claim text.