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Novel Nanocomposite PEM Membranes with Continuous Proton Transportation Channel and Reinforcing Network Formed by Electrospinning Solution Casting Method
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-05-19 , DOI: 10.1002/mame.201900388 Wei Hu 1 , Xue Yang 2 , Xiaowei Hou 2 , Qi Zhao 2 , Baijun Liu 3 , Zhaoyan Sun 4 , Haiming Xie 1 , Guangshan Zhu 1
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-05-19 , DOI: 10.1002/mame.201900388 Wei Hu 1 , Xue Yang 2 , Xiaowei Hou 2 , Qi Zhao 2 , Baijun Liu 3 , Zhaoyan Sun 4 , Haiming Xie 1 , Guangshan Zhu 1
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In this work, a kind of novel nanocomposite proton exchange membranes (PEMs) with excellent properties for fuel cell application is obtained through the combination of electrospinning and solution casting. PEMs are obtained via the electrospinning of solution of sulfonated poly(arylene ether ketone)s (SPAEK)s with carboxylic acid group (SPAEK‐COOH) inserted with nanocrystal cellulose (NCC) first, and then, the SPAEK‐COOH solution is cast on the obtained electrospinning membrane to fill the voids. According to the scanning electron microscopy image of the membrane surface and freeze‐fractured cross section, the nonporous membrane was successfully obtained. The water uptake and the swelling rate of the nanocomposite membrane with 2% NCC (NF‐NCC2) decrease to 62% and 61.5%, respectively, and the membrane shows much higher proton conductivity (0.29 S cm−1) than the pristine SPAEK‐COOH membrane (NF‐NCC0) (0.196 S cm−1) at 100 °C. Furthermore, NF‐NCC2 shows a tensile strength of 38 MPa, which is an increase of 36% compared to NF‐NCC0 (28 MPa). The orderly and uniform distribution of NCC in the electrospinning nanofiber and further in the membranes.
中文翻译：
电纺丝溶液浇铸法形成具有连续质子传输通道和增强网络的新型纳米复合PEM膜
通过静电纺丝和溶液流延的结合，获得了一种在燃料电池应用中具有优异性能的新型纳米复合质子交换膜（PEMs）。通过静电纺制带有羧酸基团（SPAEK-COOH）的磺化聚（亚芳基醚酮）（SPAEK）溶液并先插入纳米晶体纤维素（NCC），然后将SPAEK-COOH溶液浇铸在上面得到的静电纺丝膜填充空隙。根据膜表面和冷冻断裂横截面的扫描电子显微镜图像，成功获得了无孔膜。NCC为2％（NF-NCC2）的纳米复合膜的吸水率和溶胀率分别降低至62％和61.5％，并且膜的质子传导率更高（0。-1）比原始SPAEK-COOH膜（NF-NCC0）（0.196 S cm -1）在100°C。此外，NF‐NCC2的抗张强度为38 MPa，与NF‐NCC0（28 MPa）相比增加了36％。NCC在静电纺丝纳米纤维中以及在膜中的有序和均匀分布。
更新日期：2020-05-19
中文翻译：
电纺丝溶液浇铸法形成具有连续质子传输通道和增强网络的新型纳米复合PEM膜
通过静电纺丝和溶液流延的结合，获得了一种在燃料电池应用中具有优异性能的新型纳米复合质子交换膜（PEMs）。通过静电纺制带有羧酸基团（SPAEK-COOH）的磺化聚（亚芳基醚酮）（SPAEK）溶液并先插入纳米晶体纤维素（NCC），然后将SPAEK-COOH溶液浇铸在上面得到的静电纺丝膜填充空隙。根据膜表面和冷冻断裂横截面的扫描电子显微镜图像，成功获得了无孔膜。NCC为2％（NF-NCC2）的纳米复合膜的吸水率和溶胀率分别降低至62％和61.5％，并且膜的质子传导率更高（0。-1）比原始SPAEK-COOH膜（NF-NCC0）（0.196 S cm -1）在100°C。此外，NF‐NCC2的抗张强度为38 MPa，与NF‐NCC0（28 MPa）相比增加了36％。NCC在静电纺丝纳米纤维中以及在膜中的有序和均匀分布。
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