CLOSED FORM SOLUTIONS TO INVESTIGATE IONIC CONDUCTIVITY IN POROUS FUEL CELL ELECTRODE MICROSTRUCTURES

2016 ◽  
Author(s):  
Matthew B. DeGostin ◽  
Arata Nakajo ◽  
George J. Nelson ◽  
Brice N. Cassenti ◽  
Aldo A. Peracchio ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Ionic Conductivity ◽  
Closed Form ◽  
Closed Form Solutions ◽  
Fuel Cell Electrode ◽  
Cell Electrode

scholarly journals Aliphatic Anion Exchange Ionomers with Long Spacers and No Ether Links by Ziegler–Natta Polymerization: Properties and Alkaline Stability

Molecules ◽  
2022 ◽  
Vol 27 (2) ◽  
pp. 395
Author(s):  
Raul Andres Becerra-Arciniegas ◽  
Riccardo Narducci ◽  
Gianfranco Ercolani ◽  
Luca Pasquini ◽  
Philippe Knauth ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Ionic Conductivity ◽  
Anion Exchange ◽  
Exchange Capacity ◽  
Ether Linkage ◽  
Ion Exchange Capacity ◽  
Alkaline Stability ◽  
Fuel Cell Electrode ◽  
Blend Membranes ◽  
Cell Electrode

In this work we report the synthesis of poly(vinylbenzylchloride-co-hexene) copolymer grafted with N,N-dimethylhexylammonium groups to study the effect of an aliphatic backbone without ether linkage on the ionomer properties. The copolymerization was achieved by the Ziegler–Natta method, employing the complex ZrCl4 (THF)2 as a catalyst. A certain degree of crosslinking with N,N,N′,N′-tetramethylethylenediamine (TEMED) was introduced with the aim of avoiding excessive swelling in water. The resulting anion exchange polymers were characterized by 1H-NMR, FTIR, TGA, and ion exchange capacity (IEC) measurements. The ionomers showed good alkaline stability; after 72 h of treatment in 2 M KOH at 80 °C the remaining IEC of 76% confirms that ionomers without ether bonds are less sensitive to a SN2 attack and suggests the possibility of their use as a binder in a fuel cell electrode formulation. The ionomers were also blended with polyvinyl alcohol (PVA) and crosslinked with glutaraldehyde. The water uptake of the blend membranes was around 110% at 25 °C. The ionic conductivity at 25 °C in the OH− form was 29.5 mS/cm.

Effect of SiO2 additives on the PEM fuel cell electrode performance

2011 ◽  
Vol 36 (22) ◽  
pp. 14815-14822 ◽  
Author(s):  
V. Senthil Velan ◽  
G. Velayutham ◽  
Neha Hebalkar ◽  
K.S. Dhathathreyan
Keyword(s):  
Fuel Cell ◽  
Pem Fuel Cell ◽  
Electrode Performance ◽  
Fuel Cell Electrode ◽  
Cell Electrode

scholarly journals Helium Ion Microscopy of proton exchange membrane fuel cell electrode structures

2017 ◽  
Vol 4 (6) ◽  
pp. 1289-1304 ◽  
Author(s):  
Serguei Chiriaev ◽  
◽  
Nis Dam Madsen ◽  
Horst-Günter Rubahn ◽  
Shuang Ma Andersen ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Helium Ion ◽  
Fuel Cell Electrode ◽  
Ion Microscopy ◽  
Cell Electrode ◽  
Exchange Membrane

New Insights in Proton Exchange Membrane Fuel Cell Electrode Microstructure Changes from Accelerated Stress Testing By Microscopy Techniques

2021 ◽  
Vol MA2021-02 (36) ◽  
pp. 1069-1069
Author(s):  
Amir Peyman Soleymani ◽  
Jixin Chen ◽  
Chunmei Wang ◽  
Mark Ricketts ◽  
Stella Papasavva ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Stress Testing ◽  
Proton Exchange ◽  
Microstructure Changes ◽  
Fuel Cell Electrode ◽  
Cell Electrode ◽  
Microscopy Techniques ◽  
Exchange Membrane

Comparative methods for reduction and sulfonation of graphene oxide for fuel cell electrode applications

2019 ◽  
Vol 44 (24) ◽  
pp. 12356-12364 ◽  
Author(s):  
D. Morales-Acosta ◽  
J.D. Flores-Oyervides ◽  
J.A. Rodríguez-González ◽  
N.M. Sánchez-Padilla ◽  
R. Benavides ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Fuel Cell ◽  
Comparative Methods ◽  
Fuel Cell Electrode ◽  
Cell Electrode
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