Sulfophenylation of polysulfones for proton-conducting fuel cell membranes

Summary, in English

Polysulfone has been sulfophenylated by lithiation and anionic reaction with 2-sulfobenzoic acid cyclic anhydride. This provides a new convenient method to modify polysulfones by attaching pendant sulfonated phenyl groups via ketone links. Membranes of the sulfophenylated polysulfones show promise for use in proton-exchange-membrane fuel cells. For example, a membrane with 0.9 sulfophenyl units per repeating polysulfone unit and 30 wt.-% water was found to have a proton conductivity of 32 mS/cm at 60degreesC.

• Author: Benoit Lafitte; Lina Karlsson; Patric Jannasch
• Department/s: Centre for Analysis and Synthesis; Department of Chemistry
• Publishing year: 2002
• Language: English
• Pages: 896-900
• Publication/Series: Macromolecular Rapid Communications
• Volume: 23
• Issue: 15
• Links: http://dx.doi.org/10.1002/1521-3927(20021001)23:15<896::AID-MARC896>3.0.CO;2-P
• Document type: Journal article
• Publisher: John Wiley & Sons Inc.
• Topic: Chemical Sciences
• Status: Published
• ISBN/ISSN/Other: ISSN: 1022-1336