Performance of the sulfonated poly ether ether ketone proton exchange membrane modified with sulfonated polystyrene and phosphotungstic acid for microbial fuel cell applications,Journal of Applied Polymer Science

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Performance of the sulfonated poly ether ether ketone proton exchange membrane modified with sulfonated polystyrene and phosphotungstic acid for microbial fuel cell applications
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-12-30 , DOI: 10.1002/app.50430
Seyed Hesam‐Aldin Samaei ₁ , Gholamreza Bakeri _{1,

2} , Mohammad Soleimani Lashkenari ₃

Affiliation

In this research, the preparation of low cost proton exchange membranes (PEMs) based on sulfonated poly ether ether ketone (SPEEK) for application in the microbial fuel cells (MFCs) is studied. Sulfonated polystyrene (SPS) and phosphotungstic acid (PWA) were employed to improve the performance of PEM through the creation of more proton pathways. At first, the sulfonation of PEEK and polystyrene were performed through two modified methods to obtain uniform and high degree of sulfonation (DS) of the polymers and then, the PEMs were prepared through the solution casting method. Accordingly, the formation of uniform skin layer was confirmed by the SEM micrographs. Blending the aforementioned additives to the SPEEK polymer solution significantly enhanced the proton conductivity, water uptake and durability of the modified membranes. The proton conductivities of SPEEK/SPS and SPEEK/PWA membranes at additive/SPEEK weight ratio of 0.15 were 45.3% and 26.2% higher than that of the commercial Nafion117 membrane, respectively. Moreover, the degradation times for the abovementioned modified membranes were 140 and 350 min which indicated satisfactory oxidation stability. Besides, the aforementioned membranes exhibited two times more water uptake compared to the neat SPEEK membrane. Finally, SPEEK/SPS and SPEEK/PWA membranes produced 68% and 36% higher maximum power in the MFC, compared to the commercial Nafion117 membrane. Therefore, the fabricated PEMs are potentially suitable alternatives to be used in the fuel cell applications.

中文翻译：

磺化聚苯乙烯和磷钨酸改性的磺化聚醚醚酮质子交换膜在微生物燃料电池中的性能

在这项研究中，研究了基于磺化聚醚醚酮（SPEEK）的低成本质子交换膜（PEM）的制备，以用于微生物燃料电池（MFCs）。磺化聚苯乙烯（SPS）和磷钨酸（PWA）用于通过创建更多的质子途径来改善PEM的性能。首先，通过两种改进的方法对PEEK和聚苯乙烯进行磺化，以获得聚合物的均匀，高度磺化度（DS），然后通过溶液流延法制备PEM。因此，通过SEM显微照片确认了均匀表皮层的形成。将上述添加剂掺入SPEEK聚合物溶液中可显着提高改性膜的质子传导性，吸水率和耐久性。添加剂/ SPEEK重量比为0.15时，SPEEK / SPS和SPEEK / PWA膜的质子电导率分别比市售Nafion117膜高45.3％和26.2％。此外，上述改性膜的降解时间为140和350分钟，这表明令人满意的氧化稳定性。此外，上述膜的吸水量是纯SPEEK膜的两倍。最后，与商用Nafion117膜相比，SPEEK / SPS和SPEEK / PWA膜在MFC中产生的最大功率分别高出68％和36％。因此，制造的PEM是燃料电池应用中潜在的合适替代品。分别比商品化的Nafion117膜高2％。此外，上述改性膜的降解时间为140和350分钟，这表明令人满意的氧化稳定性。此外，上述膜的吸水率是纯SPEEK膜的两倍。最后，与商用Nafion117膜相比，SPEEK / SPS和SPEEK / PWA膜在MFC中产生的最大功率分别高出68％和36％。因此，制造的PEM是燃料电池应用中潜在的合适替代品。分别比商品化的Nafion117膜高2％。此外，上述改性膜的降解时间为140和350分钟，这表明令人满意的氧化稳定性。此外，上述膜的吸水量是纯SPEEK膜的两倍。最后，与商用Nafion117膜相比，SPEEK / SPS和SPEEK / PWA膜在MFC中产生的最大功率分别高出68％和36％。因此，制造的PEM是燃料电池应用中潜在的合适替代品。最后，与商用Nafion117膜相比，SPEEK / SPS和SPEEK / PWA膜在MFC中产生的最大功率分别高出68％和36％。因此，制造的PEM是燃料电池应用中潜在的合适替代品。最后，与商用Nafion117膜相比，SPEEK / SPS和SPEEK / PWA膜在MFC中产生的最大功率分别高出68％和36％。因此，制造的PEM是燃料电池应用中潜在的合适替代品。

更新日期：2021-02-23

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