Anion exchange membranes with clusters of alkyl ammonium group for mitigating water swelling but not ionic conductivity

2018 ◽  
Vol 550 ◽  
pp. 101-109 ◽  
Author(s):  
Md. Masem Hossain ◽  
Jianqiu Hou ◽  
Liang Wu ◽  
Qianqian Ge ◽  
Xian Liang ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Anion Exchange ◽  
Anion Exchange Membranes ◽  
Ammonium Group ◽  
Water Swelling ◽  
Alkyl Ammonium

scholarly journals Highly Conductive and Water-Swelling Resistant Anion Exchange Membrane for Alkaline Fuel Cells

2019 ◽  
Vol 20 (14) ◽  
pp. 3470 ◽  
Author(s):  
Qianqian Ge ◽  
Xiang Zhu ◽  
Zhengjin Yang
Keyword(s):  
Fuel Cells ◽  
Ionic Conductivity ◽  
Anion Exchange ◽  
Microphase Separation ◽  
Anion Exchange Membranes ◽  
Alkaline Fuel Cells ◽  
Transmission Electron ◽  
Hyperbranched Poly ◽  
Water Swelling ◽  
Exchange Membrane

To ameliorate the trade-off effect between ionic conductivity and water swelling of anion exchange membranes (AEMs), a crosslinked, hyperbranched membrane (C-HBM) combining the advantages of densely functionalization architecture and crosslinking structure was fabricated by the quaternization of the hyperbranched poly(4-vinylbenzyl chloride) (HB-PVBC) with a multiamine oligomer poly(N,N-Dimethylbenzylamine). The membrane displayed well-developed microphase separation morphology, as confirmed by small angle X-ray scattering (SAXS) and transmission electron microscopy (TEM). Moreover, the corresponding high ionic conductivity, strongly depressed water swelling, high thermal stability, and acceptable alkaline stability were achieved. Of special note is the much higher ratio of hydroxide conductivity to water swelling (33.0) than that of most published side-chain type, block, and densely functionalized AEMs, implying its higher potential for application in fuel cells.

Crosslinked metallo-polyelectrolytes with enhanced flexibility and dimensional stability for anion-exchange membranes

2020 ◽  
Vol 11 (28) ◽  
pp. 4542-4546 ◽  
Author(s):  
Tianyu Zhu ◽  
Chuanbing Tang
Keyword(s):  
Ionic Conductivity ◽  
Anion Exchange ◽  
Dimensional Stability ◽  
Anion Exchange Membranes

We report a class of crosslinked metallo-polyelectrolytes as anion exchange membranes with exceptional mechanical flexibility, dimensional stability and ionic conductivity.

scholarly journals Electrospun Composite Proton-Exchange and Anion-Exchange Membranes for Fuel Cells

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6709
Author(s):  
Zhihao Shang ◽  
Ryszard Wycisk ◽  
Peter Pintauro
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Anion Exchange ◽  
High Performance ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Anion Exchange Membranes ◽  
Dry Conditions ◽  
Water Swelling ◽  
Exchange Membrane

A fuel cell is an electrochemical device that converts the chemical energy of a fuel and oxidant into electricity. Cation-exchange and anion-exchange membranes play an important role in hydrogen fed proton-exchange membrane (PEM) and anion-exchange membrane (AEM) fuel cells, respectively. Over the past 10 years, there has been growing interest in using nanofiber electrospinning to fabricate fuel cell PEMs and AEMs with improved properties, e.g., a high ion conductivity with low in-plane water swelling and good mechanical strength under wet and dry conditions. Electrospinning is used to create either reinforcing scaffolds that can be pore-filled with an ionomer or precursor mats of interwoven ionomer and reinforcing polymers, which after suitable processing (densification) form a functional membrane. In this review paper, methods of nanofiber composite PEMs and AEMs fabrication are reviewed and the properties of these membranes are discussed and contrasted with the properties of fuel cell membranes prepared using conventional methods. The information and discussions contained herein are intended to provide inspiration for the design of high-performance next-generation fuel cell ion-exchange membranes.

scholarly journals Correction to “110th Anniversary: The Dehydration and Loss of Ionic Conductivity in Anion Exchange Membranes Due to FeCl4– Ion Exchange and the Role of Membrane Microstructure”

2020 ◽  
Vol 59 (21) ◽  
pp. 10229-10230
Author(s):  
Michael J. McGrath ◽  
Nicholas Patterson ◽  
Bryce C. Manubay ◽  
Samantha H. Hardy ◽  
John J. Malecha ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Ion Exchange ◽  
Anion Exchange ◽  
Anion Exchange Membranes ◽  
Membrane Microstructure

A deep learning protocol for analyzing and predicting ionic conductivity of anion exchange membranes

2021 ◽  
pp. 119983
Author(s):  
Fu-Heng Zhai ◽  
Qing-Qing Zhan ◽  
Yun-Fei Yang ◽  
Ni-Ya Ye ◽  
Rui-Ying Wan ◽  
...  
Keyword(s):  
Deep Learning ◽  
Ionic Conductivity ◽  
Anion Exchange ◽  
Anion Exchange Membranes

New Polyethylene Based Anion Exchange Membranes (PE–AEMs) with High Ionic Conductivity

2011 ◽  
Vol 44 (15) ◽  
pp. 5937-5946 ◽  
Author(s):  
Min Zhang ◽  
Hyung Kyu Kim ◽  
Elena Chalkova ◽  
Fedkin Mark ◽  
Serguei N. Lvov ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Anion Exchange ◽  
High Ionic Conductivity ◽  
Anion Exchange Membranes
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