Fluorine-Free Polynorbornene Membranes Based on a Sterically Hindered Pyridine for Vanadium Redox Flow Batteries

IF 4.4 2区化学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Polymer Materials Pub Date : 2024-11-11 DOI:10.1021/acsapm.4c0168610.1021/acsapm.4c01686

Julian Stonawski*, Frieder Junginger, Andreas Münchinger, Linus Hager, Simon Thiele and Jochen Kerres*,

引用次数: 0

Abstract

A 2,6-di-tert-butylpyridine-containing norbornene was synthesized by a one-step synthesis and copolymerized with an aromatic norbornene to obtain a membrane with a proton conductivity of 56 mS cm^–1 in 2 M H₂SO₄. Decreased vanadium(IV) permeability was reached compared to the fluorine-containing reference membrane FAPQ330. A vanadium(V) stability test for 55 days [1.6 M V(V)/2 M H₂SO₄] showed no degradation of functional groups but a loss of molecular weight. Vanadium redox flow battery single-cell tests resulted in a performance comparable to that of FAPQ330, and an in situ self-discharge test lasted more than 3 times longer for the cell equipped with pNorb-Pyr61.

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基于立体受阻吡啶的无氟聚降冰片烯膜，用于钒氧化还原液流电池

通过一步合成法合成了一种含 2,6-二叔丁基吡啶的降冰片烯，并与一种芳香族降冰片烯共聚，得到了一种在 2 M H2SO4 中质子电导率为 56 mS cm-1 的膜。与含氟参考膜 FAPQ330 相比，钒（IV）的渗透性有所降低。55 天的钒(V)稳定性测试[1.6 M V(V)/2 M H2SO4]表明，功能基团没有降解，但分子量有所下降。钒氧化还原液流电池单体电池测试的结果与 FAPQ330 的性能相当，而装有 pNorb-Pyr61 的电池在原位自放电测试中的持续时间比 FAPQ330 长 3 倍以上。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Polymer Materials Multiple-

CiteScore

7.20

自引率

6.00%

发文量

810

期刊介绍： ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.