A5036649829- Fuel Cells and Related Materials
- Membrane-based Ion Separation Techniques
- Advanced battery technologies research
- Electrocatalysts for Energy Conversion
- Advanced Battery Materials and Technologies
- Synthesis and properties of polymers
- Membrane Separation and Gas Transport
Norsk Hydro (Germany)
2024
Elbit Systems (Israel)
2019
Technion – Israel Institute of Technology
2014-2018
The properties and stability of quaternary ammonium poly(sulfone) QA-RADEL poly(phenylene oxide) QA-PPO were investigated. These two membranes have a major difference in their backbone structure where contains an electron-withdrawing group is ether-based without the main chain. Conductivity, thickness swelling measurments examined at various temperatures for both types samples. HRSEM FTIR analysis indicated that membrane degraded much faster than under high temperature pH conditions. showed...
The effect of the cross-linker chemical structure on properties and stability anion exchange membrane is focus this study. Two different cross-linkers were investigated, one with linear hexyl chain between crosslinking sites, other, ether in center alkyl linker. These two have a fundamental difference their polarity hydrophilicity. ether-containing more polar therefore will improve membrane's water uptake conductivity. Swelling conductivity measurements performed at various temperatures for...
The influence of an alkyl side chain attached to the nitrogen-centered cationic group on properties and chemical stability poly(phenylene oxide) based anion exchange membrane is focus this study. Two different groups were investigated: one common benzyl trimethyl ammonium (BTMA) group, other dimethyldecyl with a C10 pendant cation-centered quaternary nitrogen. Swelling measurements performed over range temperatures for both types samples. Water uptake was found be lower (21 wt%) than BTMA...
Abstract Anion exchange membrane water electrolysis (AEMWE) for hydrogen production combines the advantages of proton and alkaline electrolysis. Several strategies have been adopted to improve performance AEMWE obtain membranes with high hydroxide ion conductivity, low gas permeation, durability. In this work AEMs reinforced poly[2,2’‐(p‐oxydiphenylene)‐5,5’‐benzimidazole] (PBIO) polymer fibres developed. A fibre web PBIO prepared by electrospinning was impregnated into poly(terphenylene)...
Production of hydrocarbon-based, alkaline exchange, membrane-electrode assemblies (MEA's) for fuel cells and electrolyzers is examined via catalyst-coated membrane (CCM) gas-diffusion electrode (GDE) fabrication routes. The inability effectively to hot-press hydrocarbon-based ion-exchange polymers (ionomers) risks performance limitations due poor interfacial contact, especially between GDE membrane. addition an ionomeric interlayer shown greatly improve the intimacy contact membrane, as...
The effect of cross-linker and its apparent impact on AEM properties will be the focus this study. Two different cross-linkers were chosen, one has an amino-ether group other, a trymethylhexadecyl amine group. These two have fundamental difference, where is more hydrophilic therefore would improve membrane's conductivity may prevent membrane’s drying out. chemical stability membrane with these investigated. Swelling measurements examined at various temperatures for both types samples....
Investigation on the subject of structure and chemical stability was carried out two anion exchange membranes that have a great potential for being candidates in alkaline fuel cells. Both contain poly(2,6-dimethylphenylene oxide) (PPO) backbone, one has benzyltrimethyl ammonium cation (BTMA) while other long (10 carbons) alkyl side chain pendant to nitrogen-centered (C10) as can be seen Scheme. Membrane with contributes better hydrophilic–hydrophobic separation which significantly influence...
Anion-exchange membranes (AEMs) have attracted great interest for their operation in alkaline platinum-free fuel cells .However the use of AEMs a wide range devices has been limited due to various challenges. Two major obstacles are membranes' low conductivity and poor stability highly environment required that necessitates generation hydroxide anions transport through solid polymer membrane. The effect cross-linker its apparent impact on AEM properties will be focus this study. different...
Anion exchange membrane fuel cells (AEMFC) are getting more and attention in the last decade, due to their great potential as low cost electrochemical energy conversion systems. In years, advancement were made performance of anion cells. With recent advances especially beginning-of-life power density showing that direct competition with proton cell technology is indeed feasible, durability alkaline Membrane-Electrode Assemblies (MEAs), which had been largely set aside community, comes into...
In 2009, CellEra Technologies began work on an Alkaline Exchange Membrane Fuel Cell (AEMFC) stack. Shortly thereafter, at a time when there was relatively little interest in the technology, stack with 100 cm 2 active area, yielding slightly under mW/cm , running H and O achieved. This result first demonstration of AEMFC operation generated significant market interest. The membrane-electrode assemblies (MEA’s) used therein yielded up to 200 single-cell tests, comfortably world-leading power...