NITRIDED BIPOLAR PLATES

Nitrided bipolar plates and a scheme for their fabrication are provided. The present invention also contemplates device incorporating bipolar plates according to the present invention. For example, in accordance with one embodiment of the present invention, an electrochemical conversion assembly is...

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Bibliographische Detailangaben
Hauptverfasser:	VYAS, GAYATRI, KUNRATH, AUGUSTO, O, MOORE, JOHN, J, BUDINSKI, MICHAEL, K
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BASIC ELECTRIC ELEMENTS CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY PUNCHING METAL TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	Nitrided bipolar plates and a scheme for their fabrication are provided. The present invention also contemplates device incorporating bipolar plates according to the present invention. For example, in accordance with one embodiment of the present invention, an electrochemical conversion assembly is provided. The electrochemical conversion cells of the assembly are separated by respective bipolar plates comprising an alloy of Fe and Cr. A surface portion of the bipolar plates comprises a single phase nitrided structure. According to another embodiment of the present invention, a plasma nitriding process is utilized to create a single phase nitrided structure along a surface portion of respective ones of said bipolar plates. L'invention concerne des plaques bipolaires nitrurées et un schéma pour leur fabrication. L'invention concerne également un dispositif incorporant lesdites plaques bipolaires nitrurées. Par exemple, selon un mode de réalisation de l'invention, un ensemble de conversion électrochimique est utilisé. Les cellules de conversion électrochimique de l'ensemble sont séparées par des plaques bipolaires respectives comprenant un alliage de Fe et de Cr. Une partie superficielle des plaques bipolaires comprend une structure nitrurée monophasée. Selon un autre mode de réalisation de l'invention, un procédé de nitruration plasma est mis en oeuvre pour créer une structure nitrurée monophasée le long d'une partie superficielle desdites plaques bipolaires respectives.