Novel sulfonated poly(ether ether ketone)/triphenylamine hybrid membrane for vanadium redox flow battery applications.
Novel sulfonated poly(ether ether ketone)/triphenylamine hybrid membrane for vanadium redox flow battery applications.
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用于钒氧化还原液流电池应用的新型磺化聚醚醚酮/三苯胺杂化膜
DOI：
10.1039/c8ra09695c
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发表时间：
2019-01-25
期刊：
影响因子：
3.9
通讯作者：
Wang, Ruilin
中科院分区：
文献类型：
--
作者：
Quan, Yizhou;Wang, Gang;Li, Anfeng;Wei, Xiaoyan;Li, Feng;Zhang, Jie;Chen, Jinwei;Wang, Ruilin
成功制备了具有不同三苯胺负载量（1%、2%和5%）的新型磺化聚醚醚酮/三苯胺杂化膜。通过探索不同膜的理化性质和形态，确定了最佳三苯胺负载量。由于胺基和磺化基团之间的酸碱相互作用，杂化膜比原始 SPEEK 膜表现出更低的钒渗透性。三苯胺的引入还改善了质子传导性，因为三苯胺的氮原子可以被质子化并有助于质子转移。结果，与 SPEEK 和 Nafion115 膜相比，杂化膜表现出更高的离子选择性。与 Nafion115 膜相比，带有 SPEEK/TPAM-1% 膜的 VRFB 单电池在 60 mA cm−2 的电流密度下表现出更好的性能。 SPEEK/TPAM杂化膜在VRFB应用中具有巨大的潜力。新型 TPAM 杂化膜比原始 SPEEK 膜表现出更低的钒渗透性和更高的质子电导率。
A novel sulfonated poly(ether ether ketone)/triphenylamine hybrid membrane with various triphenylamine loadings (1%, 2% and 5%) has been successfully fabricated. Optimum triphenylamine loading was confirmed by exploring the physicochemical properties and morphology of different membranes. The hybrid membrane exhibited lower vanadium permeability than pristine SPEEK membranes due to the acid–base interaction between amine groups and sulfonated groups. Introduction of triphenylamine also improved the proton conductivity because the nitrogen atom of triphenylamine can be protonated and contribute to the proton transfer. As the result, the hybrid membrane demonstrated higher ion selectivity compared with SPEEK and Nafion115 membranes. The VRFB single cell with SPEEK/TPAM-1% membrane showed better performance compared to a Nafion115 membrane at the current density of 60 mA cm−2. The SPEEK/TPAM hybrid membrane has great potential for VRFB application. The novel TPAM hybrid membrane exhibited both lower vanadium permeability and higher proton conductivity than pristine SPEEK membrane.
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