- Patent Title: Catalyst coated membranes and preparation methods for fuel cells
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Application No.: US15961916Application Date: 2018-04-25
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Publication No.: US10886549B2Publication Date: 2021-01-05
- Inventor: Yuquan Zou , Scott McDermid , Massimiliano Cimenti , Shun-wen Amy Yang , Liviu Catoiu
- Applicant: Daimler AG , Ford Motor Company
- Applicant Address: DE Stuttgart; US MI Dearborn
- Assignee: Daimler AG,Ford Motor Company
- Current Assignee: Daimler AG,Ford Motor Company
- Current Assignee Address: DE Stuttgart; US MI Dearborn
- Agency: Patent Central LLC
- Agent Stephan A. Pendorf
- Main IPC: H01M8/1004
- IPC: H01M8/1004 ; H01M4/88 ; H01M8/1023 ; H01M8/1039 ; H01M8/1053 ; H01M8/1086 ; H01M8/1081 ; H01M8/1018 ; H01M8/1067

Abstract:
Simplified methods are disclosed for preparing a catalyst coated membrane that is reinforced with a porous polymer sheet (e.g. an expanded polymer sheet) for use in solid polymer electrolyte fuel cells. The methods involve forming a solid polymer electrolyte membrane by coating membrane ionomer solution onto a first catalyst layer and then applying the porous polymer sheet to the membrane ionomer solution coating, while it is still wet, such that the membrane ionomer solution only partially fills the pores of the porous polymer sheet. A second catalyst ink is then applied which fills the remaining pores of the porous polymer sheet. Not only are such methods simpler than many conventional methods, but surprisingly this can result in a marked improvement in fuel cell performance characteristics.
Public/Granted literature
- US20180323459A1 CATALYST COATED MEMBRANES AND PREPARATION METHODS FOR FUEL CELLS Public/Granted day:2018-11-08
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