Invention Grant
- Patent Title: Contact plate for fuel cells
- Patent Title (中): 燃料电池接触板
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Application No.: US10590681Application Date: 2005-02-25
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Publication No.: US08053141B2Publication Date: 2011-11-08
- Inventor: Dieter Grafl , Raimund Stroebel , Lothar Quick , Joachim Scherer , Christian Schleier , Bernd Gaugler
- Applicant: Dieter Grafl , Raimund Stroebel , Lothar Quick , Joachim Scherer , Christian Schleier , Bernd Gaugler
- Applicant Address: DE Neu-Ulm
- Assignee: Reinz-Dichtungs-GmbH
- Current Assignee: Reinz-Dichtungs-GmbH
- Current Assignee Address: DE Neu-Ulm
- Agency: Marshall & Melhorn LLC
- Priority: DE102004009869 20040226
- International Application: PCT/EP2005/002158 WO 20050225
- International Announcement: WO2005/081614 WO 20050909
- Main IPC: H01M4/64
- IPC: H01M4/64

Abstract:
The present invention relates to a contact plate for fuel cells with a coherent active area (11) on at least one side of the contact plate, wherein the active area (11) consists of a contact surface (2) which over the whole surface comprises a coating (4) of an electrically conductive, corrosion-resistant material, and of recesses (3) so that the recesses (3) form a channel structure, wherein the coating (4) furthermore at least in the bottom regions (5) of the recesses (3) is omitted. The invention further relates to a corresponding fuel cell or to a fuel cell stack with at least one such contact plate as well as to various methods for manufacturing such contact plates which may serve as bipolar plates as well as monopolar plates or end plates. With the contact plate according to the invention, one achieves an optimally reduced contact resistance with a minimal material expense for the coating (4).
Public/Granted literature
- US20080044711A1 Contact Plate for Fuel Cells Public/Granted day:2008-02-21
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