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1. (WO2018130388) METHOD FOR PRODUCING A BIPOLAR PLATE, BIPOLAR PLATE FOR A FUEL CELL AND FUEL CELL

Pub. No.:    WO/2018/130388    International Application No.:    PCT/EP2017/083751
Publication Date: Fri Jul 20 01:59:59 CEST 2018 International Filing Date: Thu Dec 21 00:59:59 CET 2017
IPC: H01M 8/0232
H01M 8/0245
Applicants: ROBERT BOSCH GMBH
Inventors: BERNER, Ulrich
KNEULE, Friedrich
Title: METHOD FOR PRODUCING A BIPOLAR PLATE, BIPOLAR PLATE FOR A FUEL CELL AND FUEL CELL
Abstract:
The invention relates to a method for producing a bipolar plate (40) for a fuel cell (2), comprising a first distributing region (50), bounded by a separating plate (75, 76), for distributing a fuel to a first electrode (21), and a second distributing region (60), bounded by a separating plate (75, 76), for distributing an oxidizing agent to a second electrode (22). In this case, a raw material comprising particles is applied to the separating plate (75, 76) in at least one of the distributing regions (50, 60), and the particles are bonded to one another by means of sintering to form an element (80) and are also bonded to the separating plate (75, 76). The invention also relates to a bipolar plate (40) for a fuel cell (2), comprising a first distributing region (50), bounded by a separating plate (75, 76), for distributing a fuel to a first electrode (21), and a second distributing region (60), bounded by a separating plate (75, 76), for distributing an oxidizing agent to a second electrode (22). In at least one of the distributing regions (50, 60), at least one element (80) which comprises particles bonded to one another by means of sintering and which is bonded to the separating plate (75, 76) by means of sintering is provided. The invention also relates to a fuel cell, comprising at least one membrane-electrode unit (10) with a first electrode (21) and a second electrode (22), which are separated from one another by a membrane (18), and to at least one bipolar plate (40) according to the invention.