Fuel cells, electrodes, and method of manufacture

Fuel cells, electrodes, and method of manufacture

An electrode (10) comprises a metal sheet (11) defining multiple through-holes (14), and a fluid-permeable layer (16) comprising fibrous and/or particulate electrically- conductive material and a polymer binder, which is to be bonded to a front surface of the metal sheet (11). In making the electrod...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Christopher Reynolds, Gene Stacey Lewis, Hugh Liam Sutherland, Naveed Akhtar, Neill Maynard
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS
ELECTRICITY
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:An electrode (10) comprises a metal sheet (11) defining multiple through-holes (14), and a fluid-permeable layer (16) comprising fibrous and/or particulate electrically- conductive material and a polymer binder, which is to be bonded to a front surface of the metal sheet (11). In making the electrode (10), the front surface is subjected to an etching process to form multiple depressions (21) or blind recesses that do not extend through the metal sheet (11); placing the fluid-permeable layer onto the front surface to form an assembly; and subjecting the assembly to compression such that the fluid-permeable layer (16) bonds to the metal sheet (11) and protrudes into the through-holes (14) and into the depressions (21). No polymeric bonding layer on the metal surface is required, and the depressions (21) lead to satisfactory adhesion between the metal sheet (11) and the fluid permeable layer (16), and improved electrical properties of a fuel cell (25) that incorporates the electrode (10).