ID
× COMMENTARYCOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineChementator Briefs
C2H2 hydrogenation Last month, Clariant (Munich, Germany; www.clariant.com) launched OleMax…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEEQUIPMENT & SERVICESFOCUS
6. Honeywell-MicroPressureMPRSeriesSensorFocus on Sensors
Hygienic optical sensor measures dissolved oxygen The Memosens COS81D hygienic…
NEW 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
A promising zeolite for ethylene separation
Scientists from ExxonMobil (Irving, Tex.; www.exxonmobil.com) and the Institute of Chemical Technology (ITQ; Valencia, Spain; http://itq.upv-csic.es) have discovered a new…

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
ABB Ability™ technology to transform BASF rotating equipment into intelligent machinery and improve uptime and reliability
Detect and correct anomalies early in your batch processes
ABB at ACHEMA 2018
The Future of Project Execution
Digitalization: What does it deliver today… and tomorrow?

View More

Live chat by BoldChat