Sulfonated poly(ether ether ketone)/s–TiO2 composite membrane for a vanadium redox flow battery
Sulfonated poly(ether ether ketone)/s–TiO2 composite membrane for a vanadium redox flow battery
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全钒氧化还原液流电池磺化聚醚醚酮/s-TiO2复合膜
DOI：
10.1002/app.48830
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发表时间：
2019
影响因子：
3
通讯作者：
Wang Ruilin
中科院分区：
文献类型：
--
作者：
Wang Gang;Wang Fei;Li Anfeng;Zhang Miaomiao;Zhang Jie;Chen Jinwei;Wang Ruilin
将磺化聚醚醚酮（SPEEK）与磺化二氧化钛（s-TiO 2）纳米粒子共混，制备了SPEEK/s-TiO 2复合膜。测定了复合膜的质子传导率、吸水率、溶胀度和离子交换容量等重要理化参数。并对其热稳定性和化学稳定性进行了测试。与Nafion 117、SPEEK和SPEEK/TiO 2膜相比，SPEEK/s-TiO 2复合膜具有最佳的选择性（7.13 × 104 S·min·cm−3）、较高的质子传导率（0.061 S·cm−1）和较低的四价钒离子（VO 2+）渗透率（8.55 × 10− 7 cm 2·min−1）。通过充放电循环测试表征了这些膜的电池性能，发现SPEEK/s-TiO 2复合膜显示出最高的能量效率（EE），高达82.3%，表明SPEEK/s-TiO 2复合膜是钒氧化还原液流电池（VRFB）应用的候选者。© 2019 Wiley Periodicals，Inc. J.应用聚合物Sci.2020，137，48830.
The SPEEK/s‐TiO2composite membrane was prepared by blending sulfonated poly(ether ether ketone) (SPEEK) and sulfonated titanium dioxide (s‐TiO2) nanoparticles. The important physiochemical parameters such as proton conductivity, water uptake, swelling degree and ion exchange capacity of the composite membrane were measured. The thermal stability and chemical stability were also tested. It was observed that the SPEEK/s‐TiO2composite membrane exhibited the best selectivity (7.13 × 104S·min·cm−3) accompanying high proton conductivity (0.061 S·cm−1) and low tetravalent vanadium ion (VO2+) permeability (8.55 × 10−7cm2·min−1) compared with Nafion117, SPEEK and SPEEK/TiO2membranes. The battery performance with these membranes was characterized by charge–discharge cycling tests and it was found that the SPEEK/s‐TiO2composite membrane showed the highest energy efficiency (EE) up to 82.3%, indicating the SPEEK/s‐TiO2composite membrane is a candidate for vanadium redox flow battery (VRFB) application. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2020,137, 48830.