Protonex Technology Corporation

Ballard Unmanned Systems Inc.

Ronald Rezac

Paul Osenar

Nick Lauder

Seth Avis

Thomas Vitella

David Ferreira

David J Edlund

Nathan Palumbo

Jeff Baldic

Matthew P Steinbroner

Matt Steinbroner

A gas separation unitfor permeating a gas out from a pressurized feed mixture includes an input manifold, an exhaust manifold,and a permeate assembly. The permeate assembly supports one or more permselective foilsover a hollow cavitysupported by a microscreen element. The microscreen element includes non-porous perimeter wallssupported on a frame surface and a porous central areasupported over the hollow cavity. A porous spacerdisposed inside the hollow cavity structurally supports the entire microscreen surface spanning the hollow cavity while also providing a void volume for receiving fluid passing through the porous central area and for conveying the fluid through the hollow cavity.

Membrane support module for permeate separation in a fuel cell

The invention provides a fuel cell stack including a layer of encapsulating material disposed about the separator plate, MEA, and reactant manifold, wherein the reactant manifold is bounded at least in part by the encapsulating material. The fuel cell stack also includes a first opening through the plate body to the first face from the second face, and an open channel in the second face extending from the opening toward a periphery of the plate. The invention also provides a fuel cell stack having a first face including an opening for passage of a reactant therethrough, a first reactant flow field defined thereon, and a first raised surface formed thereon substantially surrounding the opening. The first raised surface is configured and adapted to mate with a second surface on a face of an adjacent plate to create a flow obstruction for encapsulating material.

Fuel cell stack sealed with encapsulating material and method of making the same

Fuel cell stacks and methods

The present invention provides, among other things, 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.

Insert-molded, externally manifolded, sealed membrane based electrochemical cell stacks

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.

Insert-molded, externally manifolded, one-shot sealed membrane based electrochemical cell stacks

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Bolton, MA, United States of America

Ronald Rezac