Properties and Fuel Cell Performance of a Nanofiber Composite Membrane with 660 Equivalent Weight Perfluorosulfonic Acid

2013 ◽  
Vol 160 (4) ◽  
pp. F429-F435 ◽  
Author(s):  
J. B. Ballengee ◽  
G. M. Haugen ◽  
S. J. Hamrock ◽  
P. N. Pintauro
Keyword(s):  
Fuel Cell ◽  
Composite Membrane ◽  
Cell Performance ◽  
Equivalent Weight ◽  
Perfluorosulfonic Acid ◽  
Nanofiber Composite ◽  
Fuel Cell Performance

Nafion/PBI Nanofiber Composite Membranes for Fuel Cells Applications

2010 ◽  
Author(s):  
Tzyy-Lung Leon Yu ◽  
Shih-Hao Liu ◽  
Hsiu-Li Lin ◽  
Po-Hao Su
Keyword(s):  
Thin Film ◽  
Fuel Cell ◽  
Composite Membrane ◽  
Fiber Composite ◽  
Composite Membranes ◽  
Cell Performance ◽  
Membrane Electrode ◽  
Membrane Thickness ◽  
Fuel Cell Performance ◽  
Nano Fiber

The PBI (poly(benzimidazole)) nano-fiber thin film with thickness of 18–30 μm is prepared by electro-spinning from a 20 wt% PBI/DMAc (N, N′-dimethyl acetamide) solution. The PBI nano-fiber thin film is then treated with a glutaraldehyde liquid for 24h at room temperature to proceed chemical crosslink reaction. The crosslink PBI nano-fiber thin film is then immersed in Nafion solutions to prepare Nafion/PBI nano-fiber composite membranes (thickness 22–34 μm). The morphology of the composite membranes is observed using a scanning electron microscope (SEM). The mechanical properties, conductivity, and unit fuel cell performance of membrane electrode assembly (MEA) of the composite membrane are investigated and compared with those of Nafion-212 membrane (thickness ∼50 μm) and Nafion/porous PTFE (poly(tetrafluoro ethylene)) composite membrane (thickness ∼22 μm). We show the present composite membrane has a similar fuel cell performance to Nafion/PTFE and a better fuel cell performance than Du Pont Nafion-212.

Improvement of PEM Fuel Cell Performance Using Low Equivalent Weight PFSA Ionomers

2019 ◽  
Vol 3 (1) ◽  
pp. 361-370 ◽  
Author(s):  
Hui Xu ◽  
Harold R. Kunz ◽  
James M. Fenton ◽  
Lenonard J. Bonville
Keyword(s):  
Fuel Cell ◽  
Pem Fuel Cell ◽  
Cell Performance ◽  
Equivalent Weight ◽  
Fuel Cell Performance

Pre-Stretched Low Equivalent Weight PFSA Membranes with Improved Fuel Cell Performance

2014 ◽  
Vol 161 (6) ◽  
pp. F770-F777 ◽  
Author(s):  
Wenjing Zhang ◽  
Ryszard Wycisk ◽  
Daniel L. Kish ◽  
Peter N. Pintauro
Keyword(s):  
Fuel Cell ◽  
Cell Performance ◽  
Equivalent Weight ◽  
Fuel Cell Performance

scholarly journals Superior Proton Exchange Membrane Fuel Cell (PEMFC) Performance Using Short-Side-Chain Perfluorosulfonic Acid (PFSA) Membrane and Ionomer

Materials ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 78
Author(s):  
Nana Zhao ◽  
Zhiqing Shi ◽  
Francois Girard
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Cell Performance ◽  
Superior Performance ◽  
Side Chain ◽  
Perfluorosulfonic Acid ◽  
Short Side ◽  
Fuel Cell Performance ◽  
Exchange Membrane

Optimization of the ionomer materials in catalyst layers (CLs) which sometimes is overlooked has been equally crucial as selection of the membranes in membrane electrode assembly (MEA) for achieving a superior performance in proton exchange membrane fuel cells (PEMFCs). Four combinations of the MEAs composed of short-side-chain (SSC) and long-side-chain (LSC) perfluorosulfonic acid (PFSA) polymers as membrane and ionomer materials have been prepared and tested under various temperatures and humidity conditions, aiming to investigate the effects of different side chain polymer in membranes and CLs on fuel cell performance. It is discovered that SSC PFSA polymer used as membrane and ionomer in CL yields better fuel cell performance than LSC PFSA polymer, especially at high temperature and low RH conditions. The MEA with the SSC PFSA employed both as a membrane and as an ionomer in cathode CL demonstrates the best cell performance amongst the investigated MEAs. Furthermore, various electrochemical diagnoses have been applied to fundamentally understand the contributions of the different resistances to the overall cell performance. It is illustrated that the charge transfer resistance (Rct) made the greatest contribution to the overall cell resistance and then membrane resistance (Rm), implying that the use of the advanced ionomer in CL could lead to more noticeable improvement in cell performance than only the substitution as the membrane.

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