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发明授权
CN105694088B 一种聚乙烯醇/壳聚糖固体电解质薄膜的制备方法及应用 失效 - 权利终止

一种聚乙烯醇/壳聚糖固体电解质薄膜的制备方法及应用
摘要：
本发明公开了一种聚乙烯醇/壳聚糖固体电解质薄膜的制备方法及应用。采用可同时溶解壳聚糖和增塑改性聚乙烯醇/壳聚糖复合材料的路易斯酸性无机盐氯化铝水溶液为壳聚糖溶剂，避免了在壳聚糖的溶解中醋酸等挥发性有机酸的使用，制备得到原始聚乙烯醇/壳聚糖复合薄膜，通过后续加入甲醛溶液中浸泡的方式进行交联，并将交联后的聚乙烯醇/壳聚糖薄膜放入NaOH溶液中浸泡改性得到聚乙烯醇/壳聚糖固体电解质薄膜。所制备的聚乙烯醇/壳聚糖固体电解质薄膜具有良好的耐水性能和尺寸稳定性，薄膜的离子导电性大大增强，离子电导率达1.06×10‑2(S·cm‑1)，甲醇透过率达5.23×10‑6(cm2·s‑1)。
摘要（英）：

The invention discloses application and a preparation method of a polyvinyl alcohol/chitosan solid electrolyte film. By adoption of Lewis acidic inorganic salt aluminum chloride aqueous solution capable of simultaneously dissolving chitosan and a plasticized modified polyvinyl alcohol/chitosan composite material as a chitosan solvent, utilization of volatile organic acids such as acetic acid in dissolution of chitosan is avoided, and an original polyvinyl alcohol/chitosan composite film is prepared; the original polyvinyl alcohol/chitosan composite film is subsequently soaked into a formaldehyde solution to realize crosslinking, and the crosslinked polyvinyl alcohol/chitosan composite film is soaked into a NaOH solution to realize modification so as to obtain the polyvinyl alcohol/chitosan solid electrolyte film. The polyvinyl alcohol/chitosan solid electrolyte film prepared according to the method has excellent water resistance and dimensional stability; ionic conductivity of the film is greatly improved up to 1.06*10<-2>(S.cm<-1>), and the methanol permeability reaches 5.23*10<-6>(cm<2>.s<-1>).

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