Results 251 to 260 of about 159,023 (283)

Microheterogeneity of anion exchange membranes

Journal of Applied Polymer Science, 1975
Anion exchange membranes (ferricyanide ion type) prepared by the “paste method” were treated with an aqueous solution of hydrogen peroxide, and the resultant microporous membranes had no ion exchange capacity but water permeability. By measuring the water permeability of the membranes and observing the electron microphotographs of the membrane surfaces,
Yukio Mizutani, Koshi Kusumoto, Masakatsu Nishimura, Toshihiko Nishimura   +3 more
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Nitrate-selective anion-exchange membranes

Journal of Membrane Science, 1988
Abstract A nitrate-specific anion-exchange membrane was obtained by suitable amination of bromomethylated polysulfone blended with polysulfone. The presence of a tertiary amine is required. In transport from aqueous solutions containing a 7-fold excess of chloride ions over nitrate ions, nitrate flux is larger than chloride flux by a factor of two as
A. Eyal, O. Kedem
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(Invited) Anion Exchange Membranes

ECS Meeting Abstracts, 2019
I didn't think I was going to work on anion exchange membranes until Shimshon gave me a call in early 2008 wanting to talk about quaternary ammonium-containing polymers. It has been an interesting journey since then. CellEra's support allowed me to hire my first postdoc - Jingling Yan - and also introduced me to a great cast of characters including ...
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3D Printing of Micropatterned Anion Exchange Membranes

ACS Applied Materials & Interfaces, 2016
Micropatterned anion exchange membranes (AEMs) have been 3D printed via a photoinitiated free radical polymerization and quaternization process. The photocurable formulation, consisting of diurethane dimethacrylate (DUDA), poly(ethylene glycol) diacrylate (PEGDA), dipentaerythritol penta-/hexa- acrylate, and 4-vinylbenzyl chloride (VBC), was directly ...
Jiho, Seo, Douglas I, Kushner, Michael A, Hickner   +2 more
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Anion Exchange Membrane Water Electrolysis

2020
This chapter gives an overview of anion exchange membrane (AEM) water electrolysis. It provides basic information of the AEM water electrolysis from the thermodynamic and kinetic aspects, the development of electrode materials, electrolyte and diaphragm.
Ya Yan, Bao Yu Xia, Hongbin Zhao, Muhammad Arif Khan   +3 more
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Advancements in Anion Exchange Membrane Cations

ECS Transactions, 2015
Anion-exchange membrane fuel cells (AME-FCs) are of increasingly popular interest as they enable the use of non-Pt fuel cell catalysts, the primary cost limitation of proton exchange membrane fuel cells. Benzyltrimethyl ammonium (BTMA) is the standard cation that has historically been utilized as the hydroxide conductor in AEMs.
Matthew R Sturgeon, Hai Long, A M Park, Bryan S Pivovar   +3 more
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Mechanical Characterization of Anion Exchange Membranes

ECS Transactions, 2013
Alkali anion exchange membrane (AEM) fuel cells have the potential for electrochemical energy conversion using inexpensive catalyst and a variety of fuel types. Stability and transport must be improved in AEMs before these devices can be fully realized.
Melissa A Vandiver, Benjamin R Caire, Krysta Waldrop, Andrew M Herring, Matthew W Liberatore   +4 more
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Characterization of heterogeneous anion-exchange membrane

Journal of Membrane Science, 2001
Abstract This paper reports the studies on the properties of heterogeneous anion-exchange membranes prepared from polyvinyl chloride (PVC) as binder and anion-exchange resin powder. The effect of variation of ion-exchange resin particle size as well as the resin–binder ratio on different mechanical, electrochemical and morphological properties of the
Punita V Vyas, B.G Shah, G.S Trivedi, P Ray, S.K Adhikary, R Rangarajan   +5 more
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Water permeation through anion exchange membranes

Journal of Power Sources, 2018
Abstract An understanding of water permeation through solid polymer electrolyte (SPE) membranes is crucial to offset the unbalanced water activity within SPE fuel cells. We examine water permeation through an emerging class of anion exchange membranes, hexamethyl-p-terphenyl poly (dimethylbenzimidazolium) (HMT-PMBI), and compare it against series of ...
Xiaoyan Luo, Andrew Wright, Thomas Weissbach, Steven Holdcroft   +3 more
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Permselectivity and microstructure of anion exchange membranes

Journal of Colloid and Interface Science, 2008
The water content, the ion exchange capacity, the transport number of counter-ion of the AMV and AMX anion exchange membranes were determined. The two-phase model (gel phase and interstitial phase) of structure microheterogeneity was validated by means of conductivity measurements.
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