초록 ▼

The present invention provides membrane cassettes and stacks thereof which are suitable for a use in a variety of electrochemical applications. The invention further provides membrane cassettes which comprise one or more external manifolds which deliver reagents and/or coolant to one or more reactan

The present invention provides membrane cassettes and stacks thereof which are suitable for a use in a variety of electrochemical applications. The invention further provides membrane cassettes which comprise one or more external manifolds which deliver reagents and/or coolant to one or more reactant or coolant flow fields of the membrane cassettes. In particular, the present invention describes the insert molding method, whereby the plenums of the external manifolds are created during the stack encapsulation step. The invention describes several methods for creating the manifold runner geometry via insert-molding, machining, or with separate components.

대표청구항 ▼

What is claimed is: 1. An electrochemical cassette comprising,at least one electrochemical cell which comprises a membrane electrode assembly (MEA),a reductant flow field, an oxidant flow field, and a separator plate,at least one reductant external manifold and at least one oxidant external manifold

What is claimed is: 1. An electrochemical cassette comprising,at least one electrochemical cell which comprises a membrane electrode assembly (MEA),a reductant flow field, an oxidant flow field, and a separator plate,at least one reductant external manifold and at least one oxidant external manifold,wherein each flow field comprises at least one opening extending through the periphery of the cell and each external manifold comprises a primary manifold and at least one port in fluid contact with the peripheral openings in the flow field to which the external manifold is intended to deliver material,wherein one or more MEA, oxidant flow field, reductant flow field, and separator plate, are assembled and encapsulated about the periphery thereof by a sealant; andwherein each external manifold includes a portion of the sealant having a negative impression of a manifold insert defining a volume at least partially bounded by the sealant and wherein the volume is in contact with the peripheral openings in the flow field to which the external manifold is intended to deliver material.