Self-humidifying fuel cell
September 18, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesElectrochemical cell and separator plate thereof Fuel cell Fuel cell electric power production Fabrication of gas impervious edge seal for a bipolar gas distribution assembly for use in a fuel cell Fuel cell plates with improved arrangement of process channels for enhanced pressure drop across the plates Fuel cell power system Manifold seal for fuel cell stack assembly Novel fuel cell fluid flow field plate Fuel cell system Closed loop reactant/product management system for electrochemical galvanic energy devices InventorsAssigneeApplicationNo. 156714 filed on 09/18/1998US Classes:429/34, Housing member, seal, spacer or fluid distributing or directing means429/13, Process of operating429/30, Solid electrolyte429/38, Having support or spacers with fluid distribution means429/39, And fluid directing means429/40, Catalytic electrode structure or composition429/46Chemically specified electrolyteExaminersPrimary: Kalafut, StephenAssistant: Dove, Tracy Attorney, Agent or FirmInternational ClassesH01M 8/0/02./00 8/10 2/14 AbstractA self-humidifying polymer electrolyte membrane (PEM) fuel cell assembly has an ion-exchange membrane interposed between hydrogen and oxygen diffusion layers to form a membrane electrode assembly (MEA). The MEA is in turn interposed between a pair of current collector plates having flow field channels for flowing the reactants adjacent the respective diffusion layers to produce corresponding anodic and cathodic electrochemical reactions. Various embodiments of the assembly incorporate one or more of the following features: interdigitated flow field channels, countercurrent reactant flows, opposing channel alignment, and uncatalyzed membrane hydration enhancement zones. |
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