Sulfonated aromatic polymers containing hexafluoroisopropylidene groups: a simple but effective structure for fuel cell membranes

2018 ◽  
Vol 6 (47) ◽  
pp. 24625-24632 ◽  
Author(s):  
Jinju Ahn ◽  
Ryo Shimizu ◽  
Kenji Miyatake

Highly proton conductive and chemically stable sulfonated aromatic polymer (SBAF) membranes containing hexafluoroisopropylidene groups enabled high performance and durable fuel cells.

2013 ◽  
Vol 38 (14) ◽  
pp. 5894-5902 ◽  
Author(s):  
Mahsa S. Asgari ◽  
Manouchehr Nikazar ◽  
Payam Molla-abbasi ◽  
Mohammad Mahdi Hasani-Sadrabadi

2015 ◽  
Vol 48 (19) ◽  
pp. 7117-7126 ◽  
Author(s):  
Ying Chang ◽  
Angela D. Mohanty ◽  
Sarah B. Smedley ◽  
Khaldoon Abu-Hakmeh ◽  
Young Hun Lee ◽  
...  

Author(s):  
Stephen J. Derby ◽  
John Lippiatt

One of the biggest challenges in the manufacturing of high temperature fuel cells is the creation of the Membrane Exchange Assembly (MEA). This is the heart of the fuel cell, where the 4–5 components must be assembled with very high tolerances to perform successfully. One of the key components, the membrane, is similar to plastic food wrap. Handling plastic wrap alone in a wrinkle free mode, with precision cut edges is difficult enough. But it also must be saturated in acid, creating a very slippery product. And the membrane will grow or shrink in a matter of 5 minutes when exposed to moisture in the air. So this material handling effort is orders of magnitude more difficult than the established methods for “simple” items like paper. This paper will document the research conducted into the robotic material handling of the fuel cell membranes. It requires a mix of traditional robotic techniques, some techniques from the fabric handling arena, and some new approaches. The issues from lifting a wet film from a PET backer sheet consistently and the sensing requirements for accurate placement have made this a challenging effort.


2014 ◽  
Vol 2 (16) ◽  
pp. 5870-5882 ◽  
Author(s):  
Yves Buchmüller ◽  
Alexander Wokaun ◽  
Lorenz Gubler

Antioxidants are covalently attached to the polymer backbone in radiation grafted fuel cell membranes. The obtained membranes displayed superior stability compared to non-stabilized membranes.


Fuel Cells II ◽  
2008 ◽  
pp. 1-62 ◽  
Author(s):  
Gerhard Maier ◽  
Jochen Meier-Haack

2018 ◽  
Vol 6 (34) ◽  
pp. 16537-16547 ◽  
Author(s):  
Thanh Huong Pham ◽  
Joel S. Olsson ◽  
Patric Jannasch

The synthesis and studies of aromatic polymers tethered with azaspiro cations provide important insights towards the design of highly thermochemically stable hydroxide ion conducting fuel cell membranes.


2019 ◽  
Vol 25 (1) ◽  
pp. 1091-1099
Author(s):  
Christel Laberty-Robert ◽  
Ozlem Sel ◽  
Karine Valle ◽  
Franck Perreira ◽  
Clement Sanchez

Sign in / Sign up

Export Citation Format

Share Document