<br>新型 Na+ 超离子导电聚合物凝胶混合物电解质膜固定碳酸盐、四层和离子液体分子液体混合物的研究,Journal of Molecular Liquids

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新型 Na+ 超离子导电聚合物凝胶混合物电解质膜固定碳酸盐、四层和离子液体分子液体混合物的研究
Journal of Molecular Liquids ( IF 5.3 ) Pub Date : 2021-07-06 , DOI: 10.1016/j.molliq.2021.116922
Mohanjeet Singh Syali ₁ , Kuldeep Mishra ₂ , D.K. Kanchan ₃ , Deepak Kumar ₄

Affiliation

通过溶液浇铸法制备了固定碳酸盐、四层聚合物和离子液体分子液体混合物的新型 Na+ 超离子导电聚合物凝胶混合物电解质膜。优化的独立式电解质膜在环境温度下提供 3.3 × 10-3 S cm-1 的离子电导率和 0.31 的钠离子传输数。在频率相关的电介质和模量研究的帮助下，已经研究了详细的离子动力学。通过 FTIR 研究研究了这些分子液体与四氟硼酸钠盐和聚（偏二氟乙烯-六氟丙烯）聚合物宿主的可能相互作用。DSC 研究证实，电解质系统可将凝胶相维持在 ~ 120 °C 以下。线性扫描伏安法显示电解质系统提供的工作电压范围为 3.46 V。具有优化电解质膜和活性炭电极的双电层电容器（EDLC）电池表现出 ~ 60F g-1 的比放电容量，并且随循环次数的增加而下降可以忽略不计。报道的 Na + 超离子导电鸡尾酒电解质系统可用作电解质，同时制造电化学器件，尤其是 EDLC。

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Studies on a novel Na+ superionic conducting polymer gel cocktail electrolyte membrane immobilizing molecular liquid mixture of carbonates, tetraglyme and ionic liquid

Novel Na+ superionic conducting polymer gel cocktail electrolyte membranes immobilizing molecular liquid mixture of carbonates, tetraglyme and ionic liquid have been prepared by solution cast method. The optimized free standing electrolyte membrane offers ionic conductivity of 3.3 × 10-3 S cm−1 and sodium-ion transport number of 0.31 at ambient temperature. The detailed ion-dynamics have been investigated with the help of frequency dependent dielectric and modulus studies. The possible interaction of these molecular liquids with sodium tetrafluoroborate salt and poly(vinylidiene fluoride-hexafluoropropylene) polymer host is investigated by FTIR studies. The DSC study confirms that the electrolyte system maintains the gel phase up to ~ 120 °C. The linear sweep voltammetry reveal the working voltage range offered by the electrolyte system to be 3.46 V. The Electric double layer capacitor (EDLC) cell with optimized electrolyte membrane and electrodes of activated carbon demonstrate the specific discharge capacity of ~ 60F g−1 and drops negligibly with cycle number. The reported Na+ superionic conducting cocktail electrolyte system can be utilized as an electrolyte while fabricating electrochemical devices especially the EDLCs.

更新日期：2021-07-06

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