A sulfonated poly (aryl ether ether ketone ketone) isomer: synthesis and DMFC performance
- Los Alamos National Laboratory
- JILIN UNIV.
- CANADA NRC
A sulfonated poly(aryl ether ether ketone ketone) (PEEKK) having a well-defined rigid homopolymer-like chemical structure was synthesized from a readily-prepared PEEKK post-sulfonation with concentrated sulfuric acid at room temperature within several hours. The polymer electrolyte membrane (PEM) cast from the resulting polymer exhibited an excellent combination of thermal resistance, oxidative and dimensional stability, low methanol fuel permeability and high proton conductivity. Furthermore, membrane electrode assemblies (MEAs) were successfully fabricated and good direct methanol fuel cell (DMFC) performance was observed. At 2 M MeOH feed, the current density at 0.5 V reached 165 mA/cm, which outperformed our reported analogues and eveluated Nafion membranes.
- Research Organization:
- Los Alamos National Laboratory (LANL)
- Sponsoring Organization:
- DOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 972774
- Report Number(s):
- LA-UR-09-06676; LA-UR-09-6676
- Journal Information:
- Solid State Ionics, Journal Name: Solid State Ionics; ISSN 0167-2738; ISSN SSIOD3
- Country of Publication:
- United States
- Language:
- English
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