Membrane Electrode Assembly Design with Various Bifunctional Catalysts in Reversible Anion Exchange Membrane Fuel Cells

2017 ◽  
Keyword(s):  
Fuel Cells ◽  
Anion Exchange ◽  
Membrane Electrode Assembly ◽  
Anion Exchange Membrane ◽  
Membrane Electrode ◽  
Bifunctional Catalysts ◽  
Assembly Design ◽  
Exchange Membrane

scholarly journals Polystyrene-Based Hydroxide-Ion-Conducting Ionomer: Binder Characteristics and Performance in Anion-Exchange Membrane Fuel Cells

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 690
Author(s):  
Ji Eon Chae ◽  
So Young Lee ◽  
Sung Jong Yoo ◽  
Jin Young Kim ◽  
Jong Hyun Jang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Anion Exchange ◽  
High Performance ◽  
Membrane Electrode Assembly ◽  
Exchange Capacity ◽  
Anion Exchange Membrane ◽  
Membrane Electrode ◽  
Hydroxide Ion ◽  
Ion Conducting ◽  
Exchange Membrane

Polystyrene-based polymers with variable molecular weights are prepared by radical polymerization of styrene. Polystyrene is grafted with bromo-alkyl chains of different lengths through Friedel–Crafts acylation and quaternized to afford a series of hydroxide-ion-conducting ionomers for the catalyst binder for the membrane electrode assembly in anion-exchange membrane fuel cells (AEMFCs). Structural analyses reveal that the molecular weight of the polystyrene backbone ranges from 10,000 to 63,000 g mol−1, while the ion exchange capacity of quaternary-ammonium-group-bearing ionomers ranges from 1.44 to 1.74 mmol g−1. The performance of AEMFCs constructed using the prepared electrode ionomers is affected by several ionomer properties, and a maximal power density of 407 mW cm−2 and a durability exceeding that of a reference cell with a commercially available ionomer are achieved under optimal conditions. Thus, the developed approach is concluded to be well suited for the fabrication of next-generation electrode ionomers for high-performance AEMFCs.

Degradation study for membrane electrode assembly of anion exchange membrane fuel cell at a single-cell level

2021 ◽  
Author(s):  
Jonghyun Hyun ◽  
Seok-Hwan Yang ◽  
Gisu Doo ◽  
Sungyu Choi ◽  
Dong-Hyun Lee ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Single Cell ◽  
Anion Exchange ◽  
Membrane Electrode Assembly ◽  
Anion Exchange Membrane ◽  
Membrane Electrode ◽  
Single Cell Level ◽  
Cell Level ◽  
Degradation Study ◽  
Exchange Membrane

The durability of the membrane electrode assembly (MEA) is one of the important requirements for the successful commercialization of anion exchange membrane fuel cells (AEMFCs). While chemical stabilities of the...

scholarly journals The effect of ionomer content in catalyst layers in anion-exchange membrane water electrolyzers prepared with reinforced membranes (Aemion+)

2021 ◽  
Author(s):  
Susanne Koch ◽  
Philipp A. Heizmann ◽  
Sophia K. Kilian ◽  
Benjamin Britton ◽  
Steven Holdcroft ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Membrane Electrode Assembly ◽  
Anion Exchange Membrane ◽  
Significant Rise ◽  
Membrane Electrode ◽  
Catalyst Layers ◽  
Exchange Membrane

Anion-exchange membrane water electrolyzers (AEMWEs) have seen a significant rise in performance and durability in recent years. However, systematic studies of membrane-electrode assembly parameters such as ionomer and catalyst contents...

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