Ehrlich Lisa, Pospiech Doris, Uhlmann Petra, Tzschöckell Felix, Hager Martin D, Voit Brigitte
Department Polymer Structures, Leibniz-Institut für Polymerforschung Dresden e.V, Dresden, Germany.
Technische Universität Dresden, Organic Chemistry of Polymers, Dresden, Germany.
Des Monomers Polym. 2023 Oct 11;26(1):198-213. doi: 10.1080/15685551.2023.2267235. eCollection 2023.
Polymeric single chloride-ion conductor networks based on acrylic imidazolium chloride ionic liquid monomers AACXImCYCl as reported previously are prepared. The chemical structure of the polymers is varied with respect to the acrylic substituents (alkyl spacer and alkyl substituent in the imidazolium ring). The networks are examined in detail with respect to the influence of the chemical structure on the resulting properties including thermal behavior, rheological behavior, swelling behavior, and ionic conductivity. The ionic conductivities increase (by two orders of magnitude from 10 to 10 S·cm with increasing temperature), while the complex viscosities of the polymer networks decrease simultaneously. After swelling in water for 1 week the ionic conductivity reaches values of 10 S·cm. A clear influence of the spacer and the crosslinker content on the glass transition temperature was shown for the first time in these investigations. With increasing crosslinker content, the values and the viscosities of the networks increase. With increasing spacer length, the values decrease, but the viscosities increase with increasing temperature. The results reveal that the materials represent promising electrolytes for batteries, as proven by successful charging/discharging of a p(TEMPO-MA)/zinc battery over 350 cycles.
制备了基于先前报道的丙烯酸咪唑鎓氯化物离子液体单体AACXImCYCl的聚合物单氯离子导体网络。聚合物的化学结构随丙烯酸取代基（咪唑环中的烷基间隔基和烷基取代基）而变化。详细研究了化学结构对所得性能的影响，包括热行为、流变行为、溶胀行为和离子电导率。离子电导率增加（随着温度升高从10到10 S·cm增加两个数量级），而聚合物网络的复数粘度同时降低。在水中溶胀1周后，离子电导率达到10 S·cm的值。在这些研究中首次显示了间隔基和交联剂含量对玻璃化转变温度有明显影响。随着交联剂含量增加，网络的值和粘度增加。随着间隔基长度增加，值降低，但粘度随温度升高而增加。结果表明，这些材料是有前景的电池电解质，p(TEMPO-MA)/锌电池成功充放电超过350次证明了这一点。
