Construction of highly efficient ion channel within anion exchange membrane based on interpenetrating polymer network for H2/Air (CO2-free) alkaline fuel cell

2021 ◽  
Vol 486 ◽  
pp. 229377
Author(s):  
Lingping Zeng ◽  
Yunchuan Liao ◽  
Jianchuan Wang ◽  
Zidong Wei
Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-11 ◽  
Author(s):  
Lingping Zeng ◽  
Qian He ◽  
Yunchuan Liao ◽  
Shangyi Kuang ◽  
Jianchuan Wang ◽  
...  

A high-performance anion exchange membrane (AEM) is critical for the development of alkaline fuel cell. In this work, AEMs with an interpenetrating polymer network (IPN) are synthesized. An electron microscope clearly reveals a highly efficient “ion channel” network, which is constructed with a small amount of cation exchange groups. This specially designed ion channel leads to extraordinary hydroxide conductivity (e.g., 257.8 mS cm-1 at 80 °C) of IPN AEMs at moderate ion exchange capacity (IEC=1.75 mmol g−1), as well as excellent long-term alkaline stability at harsh condition which showed that 81% of original conductivity can be retained after a long time for 1248 hours. Moreover, a remarkable peak power density of 1.20 W cm-2 (0.1 MPa backpressure) with nonprecious metal (FeNx-CNTs) as oxygen reduction reaction (ORR) catalyst in a fuel cell test was achieved. This work offers a general strategy to prepare high-performance AEMs based on IPN structure design.


Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2335 ◽  
Author(s):  
Lina Wang ◽  
Benbing Shi

In this study, imidazolium brushes tethered by –NH2-containing ligands were grafted onto the surface of a 2D material, MXene, using precipitation polymerization followed by quaternization. Functionalized MXene was embedded into chitosan matrix to prepare a hybrid alkaline anion exchange membrane. Due to high interfacial compatibility, functionalized MXene was homogeneously dispersed in chitosan matrix, generating continuous ion conduction channels and then greatly enhancing OH− conduction property (up to 172%). The ability and mechanism of OH− conduction in the membrane were elaborated based on systematic tests. The mechanical-thermal stability and swelling resistance of the membrane were evidently augmented. Therefore, it is a promising anion exchange membrane for alkaline fuel cell application.


2015 ◽  
Vol 64 (16) ◽  
pp. 831-837 ◽  
Author(s):  
Jujie Luo ◽  
Chunjing Liu ◽  
Yanhui Song ◽  
Peipei Cui ◽  
Yu Zhang

ChemSusChem ◽  
2008 ◽  
Vol 1 (1-2) ◽  
pp. 79-81 ◽  
Author(s):  
Latifah A. Adams ◽  
Simon D. Poynton ◽  
Christelle Tamain ◽  
Robert C. T. Slade ◽  
John R. Varcoe

Polymer ◽  
2013 ◽  
Vol 54 (1) ◽  
pp. 111-119 ◽  
Author(s):  
Anil H.N. Rao ◽  
Roshni Lilly Thankamony ◽  
Hyoung-Juhn Kim ◽  
Sukwoo Nam ◽  
Tae-Hyun Kim

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