scholarly journals Crosslinked Pore-Filling Anion Exchange Membrane Using the Cylindrical Centrifugal Force for Anion Exchange Membrane Fuel Cell System

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2758
Author(s):  
Tae Yang Son ◽  
Tae-Hyun Kim ◽  
Sang Yong Nam
Keyword(s):  
Anion Exchange ◽  
Power Density ◽  
Centrifugal Force ◽  
Cell System ◽  
Anion Exchange Membrane ◽  
Maximum Power ◽  
Membrane Electrode ◽  
Maximum Power Density ◽  
Pore Filling ◽  
Exchange Membrane

In this study, novel crosslinked pore-filling membranes were fabricated by using a centrifugal force from the cylindrical centrifugal machine. For preparing these crosslinked pore-filling membranes, the poly(phenylene oxide) containing long side chains to improve the water management (hydrophilic), porous polyethylene support (hydrophobic) and crosslinker based on the diamine were used. The resulting membranes showed a uniform thickness, flexible and transparent because it is well filled. Among them, PF-XAc-PPO70_25 showed good mechanical properties (56.1 MPa of tensile strength and 781.0 MPa of Young’s modulus) and dimensional stability due to the support. In addition, it has a high hydroxide conductivity (87.1 mS/cm at 80 °C) and low area specific resistance (0.040 Ω·cm2), at the same time showing stable alkaline stability. These data outperformed the commercial FAA-3-50 membrane sold by Fumatech in Germany. Based on the optimized properties, membrane electrode assembly using XAc-PPO70_25 revealed excellent cell performance (maximum power density: 239 mW/cm2 at 0.49 V) than those of commercial FAA-3-50 Fumatech anion exchange membrane (maximum power density: 212 mW/cm2 at 0.54 V) under the operating condition of 60 °C and 100% RH as well. It was expected that PF-XAc-PPO70_25 could be an excellent candidate based on the results superior to those of commercial membranes in these essential characteristics of fuel cells.

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...

Investigation of a New Anion Exchange Membrane-based Direct Ammonia Fuel Cell System

Fuel Cells ◽  
2018 ◽  
Vol 18 (4) ◽  
pp. 379-388 ◽  
Author(s):  
O. Siddiqui ◽  
I. Dincer
Keyword(s):  
Fuel Cell ◽  
Anion Exchange ◽  
Cell System ◽  
Anion Exchange Membrane ◽  
Fuel Cell System ◽  
Exchange Membrane

Highly Efficient Platinum Group Metal Free Based Membrane-Electrode Assembly for Anion Exchange Membrane Water Electrolysis

2013 ◽  
Vol 53 (5) ◽  
pp. 1378-1381 ◽  
Author(s):  
Claudiu C. Pavel ◽  
Franco Cecconi ◽  
Chiara Emiliani ◽  
Serena Santiccioli ◽  
Adriana Scaffidi ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Water Electrolysis ◽  
Platinum Group Metal ◽  
Membrane Electrode Assembly ◽  
Anion Exchange Membrane ◽  
Membrane Electrode ◽  
Metal Free ◽  
Highly Efficient ◽  
Group Metal ◽  
Exchange Membrane

Integration of a Pd-CeO2/C Anode with Pt and Pt-Free Cathode Catalysts in High Power Density Anion Exchange Membrane Fuel Cells

2020 ◽  
Vol 3 (10) ◽  
pp. 10209-10214 ◽  
Author(s):  
Hamish A. Miller ◽  
Maria V. Pagliaro ◽  
Marco Bellini ◽  
Francesco Bartoli ◽  
Lianqin Wang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Anion Exchange ◽  
Power Density ◽  
High Power ◽  
Anion Exchange Membrane ◽  
High Power Density ◽  
Cathode Catalysts ◽  
Exchange Membrane

Fabrication of an Anion-Exchange Membrane by Pore-Filling Using Catechol–1,4-Diazabicyclo-[2,2,2]octane Coating and Its Application to Reverse Electrodialysis

Langmuir ◽  
2018 ◽  
Vol 34 (37) ◽  
pp. 10837-10846 ◽  
Author(s):  
Jiyeon Choi ◽  
SeungCheol Yang ◽  
Nam-Jo Jeong ◽  
Hanki Kim ◽  
Won-Sik Kim
Keyword(s):  
Anion Exchange ◽  
Anion Exchange Membrane ◽  
Pore Filling ◽  
Reverse Electrodialysis ◽  
Exchange Membrane

Optimal Design of Hybrid Fuel Cell Vehicles

2006 ◽  
Author(s):  
Jeongwoo Han ◽  
Michael Kokkolaras ◽  
Panos Papalambros
Keyword(s):  
Fuel Cell ◽  
Power Density ◽  
Cell System ◽  
Maximum Power ◽  
Fuel Cell Vehicle ◽  
Maximum Power Density ◽  
Fuel Cell Vehicles ◽  
Fuel Cell System ◽  
Vehicle Performance ◽  
Cell Systems

Fuel cells are being considered increasingly as a viable alternative energy source for automobiles because of their clean and efficient power generation. Numerous technological concepts have been developed and compared in terms of safety, robust operation, fuel economy, and vehicle performance. However, several issues still exist and must be addressed to improve the viability of this emerging technology. Despite the relatively large number of models and prototypes, a model-based vehicle design capability with sufficient fidelity and efficiency is not yet available in the literature. In this article we present an analysis and design optimization model for fuel cell vehicles that can be applied to both hybrid and non-hybrid vehicles by integrating a fuel cell vehicle simulator with a physics-based fuel cell model. The integration is achieved via quasi-steady fuel cell performance maps, and provides the ability to modify the characteristics of fuel cell systems with sufficient accuracy (less than 5% error) and efficiency (98% computational time reduction on average). Thus, a vehicle can be optimized subject to constraints that include various performance metrics and design specifications so that the overall efficiency of the hybrid fuel cell vehicle can be improved by 14% without violating any constraints. The obtained optimal fuel cell system is also compared to other, not vehicle-related, fuel cell systems optimized for maximum power density or maximum efficiency. A tradeoff between power density and efficiency can be observed depending on the size of compressors. Typically, a larger compressor results in higher fuel cell power density at the cost of fuel cell efficiency because it operates in a wider current region. When optimizing the fuel cell system for maximum power density, we observe that the optimal compressor operates efficiently. When optimizing the fuel cell system to be used as a power source in a vehicle, the optimal compressor is smaller and less efficient than the one of the fuel cell system optimized for maximum power density. In spite of this compressor inefficiency, the fuel cell system is 9% more efficient on average. In addition, vehicle performance can be improved significantly because the fuel cell system is designed both for maximum power density and efficiency. For a more comprehensive understanding of the overall design tradeoffs, several constraints dealing with cost, weight, and packaging issues must be considered.

Solvent effect study on selectivity of liquid anion exchange membrane electrode

1976 ◽  
Vol 48 (6) ◽  
pp. 865-868 ◽  
Author(s):  
Claudio. Fabiani
Keyword(s):  
Solvent Effect ◽  
Anion Exchange ◽  
Effect Study ◽  
Anion Exchange Membrane ◽  
Membrane Electrode ◽  
Exchange Membrane

A high-performance supportless silver nanowire catalyst for anion exchange membrane fuel cells

2015 ◽  
Vol 3 (4) ◽  
pp. 1410-1416 ◽  
Author(s):  
L. Zeng ◽  
T. S. Zhao ◽  
L. An
Keyword(s):  
Fuel Cells ◽  
Anion Exchange ◽  
Power Density ◽  
Peak Power ◽  
High Performance ◽  
Anion Exchange Membrane ◽  
Silver Nanowire ◽  
Peak Power Density ◽  
Exchange Membrane

The use of supportless Ag NWs enabled the H2/O2 AEMFC to yield a peak power density of 164 mW cm−2.

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