I D
× COMMENTARYEDITOR'S PAGECOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineChementator Briefs
Nanofiltration Toray Industries, Inc. (Tokyo, Japan; www.toray.com) has created what…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More SHOW PREVIEWS

Comment Separation Processes

A fluorine-free membrane for fuel cells

By Tetsuo Satoh |

Polymer-electrolyte fuel cells (PEFCs) are promising devices for clean power generation in automotive, stationary and portable applications. Up to now, the proton exchange membranes (PEMs) used in PEFCs have been based on perfluorosulfonic acid (PFSA) ionomers (for example, Nafion). However, several problems have limited the widespread adoption of PEFCs, including high gas permeability, low thermal stability, high production cost and environmental incompatibility. It is believed that fluorine-free PEMs can potentially address all of these issues, but so far, no alternative membranes have simultaneously met the criteria for both high performance (for example, proton conductivity) and durability (for example, mechanical and chemical stability). Now, researchers from the University of Yamanashi (Kofu City, www.yamanashi.ac.jp), with support from the New Energy and Industrial Technology Development Organization (NEDO; Kawasaki, www.nedo.go.jp), may have found a PEM with the desired properties. The membrane is a random copolymer (diagram) of sulfonated polyphenylene (SPP) and quinquephenyl (QP). The newly designed SPP-QP PEM exhibits very high proton conductivity, excellent flexibility and a low gas permeability (nearly 15–20% that of…
Related Content
Driving Toward a Hydrogen-based Economy
Technology developments are progressing towards large-scale production of ‘green’ hydrogen, along with improved methods for storage and transportation The world…
A new membrane for forward osmosis
Many desalination technologies have been developed, but they usually require a large amount of energy. Forward osmosis (FO) has the…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
How separation processes profit from Industrial Internet of Things (IIoT) solutions
Up to 80% increased production rates in plastic recycling
Higher throughput and purity in sodium bicarbonate production with up to 15% less energy consumption
Help feeding nations with chemical filtering technologies
Not at the forefront of Industry 4.0?

View More

Live chat by BoldChat