Temperature- and Humidity-Controlled SAXS Analysis of Proton-Conductive Ionomer Membranes for Fuel Cells

ChemSusChem ◽  
2014 ◽  
Vol 7 (3) ◽  
pp. 729-733 ◽  
Author(s):  
Takashi Mochizuki ◽  
Katsuyoshi Kakinuma ◽  
Makoto Uchida ◽  
Shigehito Deki ◽  
Masahiro Watanabe ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Ionomer Membranes ◽  
Temperature And Humidity ◽  
Saxs Analysis

SAXS Analysis of Catalyst Degradation in High Temperature PEM Fuel Cells Subjected to Accelerated Ageing Tests

Fuel Cells ◽  
2014 ◽  
Vol 14 (6) ◽  
pp. 938-944 ◽  
Author(s):  
F. Valle ◽  
N. Zuliani ◽  
B. Marmiroli ◽  
H. Amenitsch ◽  
R. Taccani
Keyword(s):  
Fuel Cells ◽  
High Temperature ◽  
Pem Fuel Cells ◽  
Accelerated Ageing ◽  
Saxs Analysis ◽  
High Temperature Pem

Chemical Interactions in Ionomers and Ionomer Membranes Containing Metal particles and Ions

1999 ◽  
Vol 575 ◽  
Author(s):  
William M. Risen
Keyword(s):  
Fuel Cells ◽  
Metal Ions ◽  
Small Molecules ◽  
Distinct Species ◽  
Pem Fuel Cells ◽  
Metal Particles ◽  
Metal Carbonyls ◽  
Ionomer Membranes ◽  
Low Temperature Fuel Cells

ABSTRACTIonomer membranes are employed in PEM fuel cells as the proton conducting element, but they also hold potential for catalytic applications in both hydrogen based and other low temperature fuel cells. In these applications the reactions of H2, CO, 02, H20 and other small molecules with metal-based catalysts are important to consider. Reactions of these species with perfluorocarbonsulfonic acid based ionomers (PFSA), of which Nafionsa are prototypical, containing Rh, Ru, Pt and other metal ions and particles are shown. Metal carbonyls form with metal ions that have been reduced in situ to reduced valence ions or to metal particles, by the combination of CO and H2O or with H2 directly. Metal nitrogen complexes also can be formed. In addition, the interactions of dissimilar metal ions leads to distinct species with NO or CO, for example, that are different from the products with either ion separately.

Active Area Determination of Porous Pt Electrodes Used in Polymer Electrolyte Fuel Cells: Temperature and Humidity Effects

2010 ◽  
Vol 157 (12) ◽  
pp. B1795 ◽  
Author(s):  
Rakel Wreland Lindström ◽  
Katrin Kortsdottir ◽  
Maria Wesselmark ◽  
Alejandro Oyarce ◽  
Carina Lagergren ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Fuel Cells ◽  
Active Area ◽  
Humidity Effects ◽  
Pt Electrodes ◽  
Temperature And Humidity ◽  
Area Determination

scholarly journals Improving the water management in anion-exchange membrane fuel cells via ultra-thin, directly deposited solid polymer electrolyte

RSC Advances ◽  
2020 ◽  
Vol 10 (15) ◽  
pp. 8645-8652 ◽  
Author(s):  
Philipp Veh ◽  
Benjamin Britton ◽  
Steven Holdcroft ◽  
Roland Zengerle ◽  
Severin Vierrath ◽  
...  
Keyword(s):  
Water Management ◽  
Fuel Cells ◽  
Relative Humidity ◽  
Anion Exchange ◽  
High Performance ◽  
Solid Polymer Electrolyte ◽  
Anion Exchange Membrane ◽  
Solid Polymer ◽  
Ionomer Membranes ◽  
Exchange Membrane

Thin ionomer membranes are considered key to achieve high performances in anion exchange membrane fuel cells, as well as high performance robustness towards changes in relative humidity.

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