scholarly journals PtRu/C catalyst slurry preparation for large-scale decal transfer with high performance of proton exchange membrane fuel cells

RSC Advances ◽  
2018 ◽  
Vol 8 (63) ◽  
pp. 36313-36322 ◽  
Author(s):  
Mihwa Choi ◽  
Jong Kwan Kim ◽  
Jungsuk Kim ◽  
Seugran Yang ◽  
Ji-Eun Park ◽  
...  
Keyword(s):  
High Performance ◽  
Large Scale ◽  
Proton Exchange Membrane ◽  
Membrane Electrode Assembly ◽  
Hydrogen Gas ◽  
Proton Exchange ◽  
Membrane Electrode ◽  
Large Area ◽  
Transfer Method ◽  
Exchange Membrane

A large-area membrane-electrode assembly (MEA) has been fabricated using the decal transfer method with a methanol-based PtRu/C catalyst slurry and its excellent performance was realized by using reformed hydrogen gas.

scholarly journals Synthesis of Sulfonated Poly(Arylene Ether Sulfone)s Containing Aliphatic Moieties for Effective Membrane Electrode Assembly Fabrication by Low-Temperature Decal Transfer Methods

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1713
Author(s):  
Jie-un Choi ◽  
Min-kyu Kyeong ◽  
Min-sung Kim ◽  
Sang-Soo Lee ◽  
Bora Seo ◽  
...  
Keyword(s):  
Proton Exchange Membrane ◽  
Membrane Electrode Assembly ◽  
Proton Exchange ◽  
Membrane Electrode ◽  
Scanning Calorimetry ◽  
Electrolyte Membrane ◽  
Arylene Ether ◽  
Transfer Method ◽  
Exchange Membrane ◽  
Sulfonated Poly

The purpose of this study was to investigate the effect of the aliphatic moiety in the sulfonated poly(arylene ether sulfone) (SPAES) backbone. A new monomer (4,4’-dihydroxy-1,6-diphenoxyhexane) was synthesized and polymerized with other monomers to obtain partially alkylated SPAESs. According to differential scanning calorimetry analysis, the glass transition temperature (Tg) of these polymers ranged from 85 to 90 °C, which is 100 °C lower than that of the fully aromatic SPAES. Due to the low Tg values obtained for the partially alkylated SPAESs, it was possible to prepare a hydrocarbon electrolyte membrane-based membrane electrode assembly (MEA) with Nafion® binder in the electrode through the use of a decal transfer method, which is the most commercially suitable system to obtain an MEA of proton exchange membrane fuel cells (PEMFCs). A single cell prepared using this partially alkylated SPAES as an electrolyte membrane exhibited a peak power density of 539 mW cm−2.

Applying machine learning to boost the development of high-performance membrane electrode assembly for proton exchange membrane fuel cells

2021 ◽  
Author(s):  
Rui Ding ◽  
Yiqin Ding ◽  
Hongyu Zhang ◽  
Ran Wang ◽  
Zihan Xu ◽  
...  
Keyword(s):  
Machine Learning ◽  
High Performance ◽  
Proton Exchange Membrane ◽  
Membrane Electrode Assembly ◽  
Proton Exchange ◽  
Membrane Electrode ◽  
Decision Modeling ◽  
Selection Decision ◽  
Set Up ◽  
Exchange Membrane

A comprehensive machine learning workflow consisting of feature selection, decision modeling, regression modeling, and extremum optimization was set up to give predictions based on big-data, bringing revolutionary changes to labor-intensive fields.

scholarly journals On the Effect of Anion Exchange Ionomer Binders in Bipolar Electrode Membrane Interface Water Electrolysis

2021 ◽  
Author(s):  
Britta Mayerhöfer ◽  
Konrad Ehelebe ◽  
Florian Dominik Speck ◽  
Markus Bierling ◽  
Johannes Bender ◽  
...  
Keyword(s):  
Proton Exchange Membrane ◽  
Water Electrolysis ◽  
Membrane Electrode Assembly ◽  
Proton Exchange ◽  
Membrane Electrode ◽  
Bipolar Electrode ◽  
Electrode Interface ◽  
Exchange Membrane ◽  
Electrode Membrane ◽  
Pem Water Electrolyzer

Bipolar membrane|electrode interface water electrolyzers (BPEMWE) were found to outperform a proton exchange membrane (PEM) water electrolyzer reference in a similar membrane electrode assembly (MEA) design based on individual porous...

scholarly journals MOF Derived Catalysts for Oxygen Reduction Reaction in Proton Exchange Membrane Fuel Cell

2018 ◽  
Vol 778 ◽  
pp. 275-282
Author(s):  
Noaman Khan ◽  
Saim Saher ◽  
Xuan Shi ◽  
Muhammad Noman ◽  
Mujahid Wasim Durani ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Membrane Electrode Assembly ◽  
Reduction Reaction ◽  
Proton Exchange ◽  
Membrane Electrode ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
Exchange Membrane

Highly porous ZIF-67 (Zeolitic imidazole framework) has a conductive crystalline metal organic framework (MOF) structure which was served as a precursor and template for the preparation of nitrogen-doped carbon nanotubes (NCNTs) electrocatalysts. As a first step, the chloroplatinic acid, a platinum (Pt) precursor was infiltrated in ZIF-67 with a precise amount to obtain 0.12 mg.cm-2 Pt loading. Later, the infiltrated structure was calcined at 700°C in Ar:H2 (90:10 vol%) gas mixture. Multi-walled nitrogen-doped carbon nanotubes were grown on the surface of ZIF-67 crystals following thermal activation at 700°C. The resulting PtCo-NCNTs electrocatalysts were deposited on Nafion-212 solid electrolyte membrane by spray technique to study the oxygen reduction reaction (ORR) in the presence of H2/O2 gases in a temperature range of 50-70°C. The present study elucidates the performance of nitrogen-doped carbon nanotubes ORR electrocatalysts derived from ZIF-67 and the effects of membrane electrode assembly (MEA) steaming on the performance of proton exchange membrane fuel cell (PEMFC) employing PtCo-NCNTs as ORR electrocatalysts. We observed that the peak power density at 70°C was 450 mW/cm2 for steamed membrane electrode assembly (MEA) compared to 392 mW/cm2 for an identical MEA without steaming.

scholarly journals Development of a Heuristic Control Algorithm for Detection and Regeneration of CO Poisoned LT-PEMFC Stacks in Stationary Applications

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4648 ◽  
Author(s):  
Vietja Tullius ◽  
Marco Zobel ◽  
Alexander Dyck
Keyword(s):  
High Performance ◽  
Proton Exchange Membrane ◽  
Operation Time ◽  
Proton Exchange ◽  
Membrane Electrode ◽  
Co Poisoning ◽  
Sensitivity Tests ◽  
First Results ◽  
Exchange Membrane ◽  
First Time

Combined heat and power (CHP) systems based on low-temperature proton exchange membrane fuel cells (LT-PEMFC) technology are suspected to CO poisoning on the anode side. The fuel cell CO sensitivity increases with ongoing operation time leading to high performance losses. In this paper we present the development of detection and regeneration algorithm based on air bleed to minimize voltage losses due to CO poisoning. Therefore, CO sensitivity tests with two short stacks with different operation time will be analyzed and the test results of aged membrane electrode assemblies (MEAs) will be presented for the first time. Additionally, the first results of the algorithm in operation will be shown.

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