- Patent Title: Composite polymer electrolyte membrane, and catalyst-coated membrane, membrane electrode assembly, and polymer electrolyte fuel cell using the composite polymer electrolyte membrane
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Application No.: US15557217Application Date: 2016-03-10
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Publication No.: US10483577B2Publication Date: 2019-11-19
- Inventor: Junpei Yamaguchi , Daisuke Izuhara , Hiroaki Umeda , Yumiko Okamoto
- Applicant: Toray Industries, Inc.
- Applicant Address: JP Tokyo
- Assignee: Toray Industries, Inc.
- Current Assignee: Toray Industries, Inc.
- Current Assignee Address: JP Tokyo
- Agency: DLA Piper LLP (US)
- Priority: JP2015-050409 20150313
- International Application: PCT/JP2016/057590 WO 20160310
- International Announcement: WO2016/148017 WO 20160922
- Main IPC: H01M8/00
- IPC: H01M8/00 ; H01M8/106 ; C08G81/00 ; H01B1/12 ; H01M8/1004 ; H01M8/1025 ; H01M8/1027 ; H01M8/1032 ; H01M8/1053 ; H01M8/1072 ; H01M8/1018
Abstract:
A composite polymer electrolyte membrane includes a composite layer of an aromatic hydrocarbon-based polymer electrolyte and a fluorine-containing polymer porous membrane, wherein a ratio (O/F ratio) of an atomic composition percentage of oxygen O (at %) to an atomic composition percentage of fluorine F (at %) on an outermost surface of the fluorine-containing polymer porous membrane as measured by X-ray photoelectron spectroscopy (XPS) is 0.20 or more to 2.0 or less, and the aromatic hydrocarbon-based polymer electrolyte in the composite layer forms a phase separation structure.
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