CN106220888A - 一种复合离子液体的微孔聚合物电解质制备方法 - Google Patents

一种复合离子液体的微孔聚合物电解质制备方法 Download PDF

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CN106220888A
CN106220888A CN201610699412.8A CN201610699412A CN106220888A CN 106220888 A CN106220888 A CN 106220888A CN 201610699412 A CN201610699412 A CN 201610699412A CN 106220888 A CN106220888 A CN 106220888A
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王利萍
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Abstract

一种复合离子液体的微孔聚合物电解质制备方法，先制备离子液体，再制备PVDF‑HFP/PMMA基体及微孔聚合物电解质，将PVDF‑HFP和PMMA溶解在DMAC和EG（质量比9:1）的混合溶液中，并且在40℃下搅拌24h，得到均一的溶液，然后将得到的混合溶液涂布在磨具上，并且放在真空环境下60℃蒸发除去DMAC和EG，从而得到微孔聚合物膜，将得到的膜浸泡在a步骤制得的离子液体与LiClO4的混合溶液中，拿出得到微孔聚合物电解质。本发明的有益效果是：合成工艺简单，反应条件温和，生产成本较低，可重复性好。

Description

一种复合离子液体的微孔聚合物电解质制备方法
技术领域
本发明涉及材料合成方法，具体的是一种复合离子液体的微孔聚合物电解质制备方法。
背景技术
随着人类社会对能源的需求越来越大，能源短缺和环境污染这两大难题日益突出，人类越来越倾向于使用可持续、清洁、高效的新能源体系。其中，锂离子电池由于比能量大、工
作电压高、循环寿命长和环境污染小等优点，在小型数码电子产品，电动汽车、航空航天等领域具有广泛的应用前景。传统的锂电池大多以非质子溶剂作为电解质，聚合物电解质由于
其不泄露，不易燃逐步得到人们的青睐，但是聚氧化乙烯（ＰＥＯ）由于其较高的结晶度导致了其较低的离子电导率（１０－８～１０－７Ｓ／ｃｍ），人们通过各种办法，如共混、添加无机纳米颗粒等来提高其电导率，虽然离子电导率得到一定的提升，但是仍然难以满足商业要求。通过将高离子电导率的有机电解质与聚合物基体复合得到的凝胶聚合物电解质，一般电导率可达到１０－３Ｓ／ｃｍ，与传统的有机电解质相比更近一步。微孔聚合物电解质作为凝胶聚合物电解质中的一种，由于其离子电导率很大程度上取决于其吸收的电解质，因此微孔聚合物电解质也逐渐成为研究的热点。离子液体作为一种新型的绿色溶剂，由于其高离子电导率、较宽的电化学窗口以及不可燃性，有望成为替代传统有机溶剂的新型溶剂。
发明内容
本发明所要解决的技术问题在于提供一种复合离子液体的微孔聚合物电解质制备方法，提供一种新的制备方法。
本发明采用的制备方法，包括如下步骤：
a、制备离子液体，将0.1mol 1－甲基咪唑、0.12mol溴丁烷和0.1mol四氟硼酸钠加入三口烧瓶中，在氮气保护的条件下匀速搅拌６ｈ，得到白色悬浮液，将生成物倒入单口锥形瓶并放到真空干燥箱中120℃抽真空24h，然后进行离心分离除去下层白色沉淀，重复真空干燥和离子分离３次，最后得到纯净无色透明的离子液体；
b、制备PVDF-HFP/PMMA基体及微孔聚合物电解质，将PVDF-HFP和PMMA溶解在DMAC和EG（质量比9:1）的混合溶液中，并且在40℃下搅拌24h，得到均一的溶液，然后将得到的混合溶液涂布在磨具上，并且放在真空环境下60℃蒸发除去DMAC和EG，从而得到微孔聚合物膜，将得到的膜浸泡在a步骤制得的离子液体与LiClO4的混合溶液中，拿出得到微孔聚合物电解质。
本发明的有益效果是：合成工艺简单，反应条件温和，生产成本较低，可重复性好。
具体实施方式
以下结合实例进一步说明本发明的内容，由技术常识可知，本发明也可通过其它的不脱离本发明技术特征的方案来描述，因此所有在本发明范围内或等同本发明范围内的改变均被本发明包含。
实施例:
a、制备离子液体，将0.1mol 1－甲基咪唑、0.12mol溴丁烷和0.1mol四氟硼酸钠加入三口烧瓶中，在氮气保护的条件下匀速搅拌６ｈ，得到白色悬浮液，将生成物倒入单口锥形瓶并放到真空干燥箱中120℃抽真空24h，然后进行离心分离除去下层白色沉淀，重复真空干燥和离子分离３次，最后得到纯净无色透明的离子液体；
b、制备PVDF-HFP/PMMA基体及微孔聚合物电解质，将PVDF-HFP和PMMA溶解在DMAC和EG（质量比9:1）的混合溶液中，并且在40℃下搅拌24h，得到均一的溶液，然后将得到的混合溶液涂布在磨具上，并且放在真空环境下60℃蒸发除去DMAC和EG，从而得到微孔聚合物膜，将得到的膜浸泡在a步骤制得的离子液体与LiClO4的混合溶液中，拿出得到微孔聚合物电解质。
通过实验，根据本发明制得的微孔聚合物电解质膜的电导率在30℃下达到最大，1.52*10-3s/cm。

Claims (1)

1.一种复合离子液体的微孔聚合物电解质制备方法，包括如下步骤：
a、制备离子液体，将0.1mol 1－甲基咪唑、0.12mol溴丁烷和0.1mol四氟硼酸钠加入三口烧瓶中，在氮气保护的条件下匀速搅拌６ｈ，得到白色悬浮液，将生成物倒入单口锥形瓶并放到真空干燥箱中120℃抽真空24h，然后进行离心分离除去下层白色沉淀，重复真空干燥和离子分离３次，最后得到纯净无色透明的离子液体；
b、制备PVDF-HFP/PMMA基体及微孔聚合物电解质，将PVDF-HFP和PMMA溶解在DMAC和EG（质量比9:1）的混合溶液中，并且在40℃下搅拌24h，得到均一的溶液，然后将得到的混合溶液涂布在磨具上，并且放在真空环境下60℃蒸发除去DMAC和EG，从而得到微孔聚合物膜，将得到的膜浸泡在a步骤制得的离子液体与LiClO4的混合溶液中，拿出得到微孔聚合物电解质。
CN201610699412.8A 2016-08-22 2016-08-22 一种复合离子液体的微孔聚合物电解质制备方法 Pending CN106220888A (zh)

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CN109369870A (zh) * 2018-09-28 2019-02-22 上海师范大学 一种氮掺杂超稳定多孔聚合物复合材料及其制备方法
CN110010961A (zh) * 2019-04-10 2019-07-12 赣南师范大学 一种pvdf-hfp/pmma/pvp凝胶聚合物及其制备方法与应用

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109369870A (zh) * 2018-09-28 2019-02-22 上海师范大学 一种氮掺杂超稳定多孔聚合物复合材料及其制备方法
CN109369870B (zh) * 2018-09-28 2021-05-18 上海师范大学 一种氮掺杂超稳定多孔聚合物复合材料及其制备方法
CN110010961A (zh) * 2019-04-10 2019-07-12 赣南师范大学 一种pvdf-hfp/pmma/pvp凝胶聚合物及其制备方法与应用

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Application publication date: 20161214