CN114527610A - 一种电致变色用准固态电解质的制备及其应用 - Google Patents
一种电致变色用准固态电解质的制备及其应用 Download PDFInfo
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- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 12
- 239000008367 deionised water Substances 0.000 claims abstract description 12
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 12
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 10
- 239000004417 polycarbonate Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract 3
- 238000000034 method Methods 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 5
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- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 3
- 229920002799 BoPET Polymers 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000011244 liquid electrolyte Substances 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000004506 ultrasonic cleaning Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
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- 239000011268 mixed slurry Substances 0.000 description 1
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- 238000004806 packaging method and process Methods 0.000 description 1
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- 229910001251 solid state electrolyte alloy Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
本发明涉及一种电致变色用准固态电解质的制备及其应用,原材料包括:无水氯化锂、聚乙烯醇、聚碳酸酯、去离子水。将无水氯化锂、聚乙烯醇和聚碳酸酯按一定比例加入去离子水中,加热搅拌一段时间,制备出准固态电解质。将该电解质用于柔性电致变色器件中。本发明制备工艺简单、成本低;制备的准固态电解质电导率高。能用于电致变色器件中,并能有效提高器件的电致变色性能,有很好的应用前景。
Description
技术领域
本发明属于电致变色材料及其制备和应用领域,特别涉及一种电致变色用准固态电解质的制备及其应用。
背景技术
电致变色是材料的光学属性(反射率、透过率、吸收率等)在外加电场的作用下发生稳定、可逆的颜色变化的现象,在外观上表现为颜色和透明度的可逆变化。具有电致变色性能的材料称为电致变色材料,用电致变色材料做成的器件称为电致变色器件。电致变色器件由透明基底、电致变色层、透明导电层、离子存储层、电解质层(离子导电层)等多层结构组成。电解质层(离子导电层)通过吸引质子,允许电子以所需的方式移动。在两电极之间起着传输离子的作用。电解质质又分为液态电解质、固态电解质、准固态电解质。液态电解质存在一些问题诸如:封装困难、易发生漏液、易爆炸。固态电解质同样也存在一些问题如:制备固态电解质所用设备和材料价格非常昂贵,需要真空的工作环境,不适合电致变色器件的产业化生产。
发明内容
本发明所要解决的技术问题是提供一种电致变色用准固态电解质的制备,本发明提供了一种制备电致变色用准固态电解质的方法,利用本发明的方法所制的准固态电解质应用到柔性电致变色器件展现了出色的电致变色性能,该方法制备工艺简单、成本低。
本发明的一种电致变色用准固态电解质,将无水氯化锂、聚乙烯醇和聚碳酸酯按一定比例加入去离子水中,加热搅拌一段时间。无水氯化锂、聚乙烯醇、聚碳酸酯和去离子水质量比为3:10:1:120~7:20:3:200。
所述电致变色准固态电解质的厚度为0.5mm~3mm。
本发明的一种电致变色用准固态电解质的制备方法,包括:
(1)将无水氯化锂、聚乙烯醇、聚碳酸酯和去离子水按3:10:1:120~7:20:3:200混合,加热搅拌,得到混合透明凝胶;
(2)将上述混合浆料置于基底,在室温下冷却4h~12h,即可得准固态电解质。
一种电致变色用准固态电解质的制备方法其中步骤(1)中的加热的温度为70℃~95℃。
一种电致变色用准固态电解质的制备方法其中所述步骤(2)中准固态电解质量为1g~40g。
本发明具有以下优点:
(1)性能优异:本发明的准固态电解质具有高电导率,能够有效的提高电致变色器件的性能。
(2)工艺操作简单:操作条件容易控制,制备成功率较高。整个制备过程也无需特殊条件,对设备要求不苛刻,具有产业应用的可能性。
(3)本发明的准固态电解质厚度可以控制,可弯曲,适合应用于柔性电致变色器件中。
附图说明:
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案,下面将对具体实施方式或现有技术描述中所需要使用的附图做简单地介绍:
图1为实施例1制备的柔性电致变色器件的数码照片图;其中(a)为褪色态,(b)为着色态;
图2为实施例1制备的柔性电致变色器件的分别在褪色状态和着色状态下的光透过率曲线。
具体实施方式
下面详细描述本发明的实施例。下面描述的实施例是示例性的,仅用于解释本发明,而不能理解为对本发明的限制。此外应理解,在阅读了本发明讲授的内容之后,本领域技术人员可以对本发明作各种改动或修改,这些等价形式同样落于本申请所附权利要求书所限定的范围。
实施例1:
裁剪尺寸大小长4cm宽1.5cm的ITO导电PET薄膜。依次用丙酮、酒精、去离子水超声波清洗10min,重复两次。得到干净的基底,置于干燥箱中。室温下,将32mL的去离子水加入至100mL的烧杯中,然后称取0.5g的无水氯化锂和3g的聚乙烯醇置于上述烧杯中;接着在烧杯中加入1mL的聚碳酸酯;在95℃的温度下搅拌20min;室温下冷却4h得到透明均匀的准固态电解质,将准固态电解质和PET薄膜组装制备出柔性电致变色器件。
图1为所制得柔性电致变色器件的数码照片图,当对器件施加负压(-2.5V),器件变蓝;对器件施加正压(2.5V),器件发生褪色现象。
图2为所制得柔性电致变色器件的分别在褪色状态和着色状态下的光透过率曲线图;波长550nm处变色范围为22.1%,最大变色范围38.7%。
实施例2
裁剪尺寸大小长4cm宽1.5cm的ITO导电PI薄膜。依次用丙酮、酒精、去离子水超声波清洗10min,重复两次。得到干净的基底,置于干燥箱中。室温下,将32mL的去离子水加入至100mL的烧杯中,然后称取0.5g的无水氯化锂和3g的聚乙烯醇置于上述烧杯中;接着在烧杯中加入1mL的聚碳酸酯;在95℃的温度下搅拌20min;室温下冷却4h得到透明均匀的准固态电解质,将准固态电解质和PI薄膜组装制备出柔性电致变色器件。
对器件施加负压(-2.5V),器件变蓝;对器件施加正压(2.5V),器件发生褪色现象。
Claims (5)
1.一种电致变色用准固态电解质,其特征在于:将原料混合加热搅拌成准固态,原料为:无水氯化锂、聚乙烯醇、聚碳酸酯、去离子水。其中无水氯化锂、聚乙烯醇、聚碳酸酯、去离子水的质量比为3:10:1:120~7:20:3:200。
2.根据权利要求1所属的一种电致变色用准固态电解质,其特征在于:所述电致变色准固态电解质的厚度为0.5mm~3mm。
3.一种如权利要求1~2任一所述的电致变色准固态电解质的制备方法包括:
(1)将无水氯化锂、聚碳酸酯、聚乙烯醇和去离子水按3:10:1:120~7:20:3:200的比例混合,加热搅拌,得到混合透明凝胶;
(2)将上述混合透明凝胶置于基底,在室温下冷却4h~12h,即可得准固态电解质。
4.根据权利要求3所述的一种电致变色用准固态电解质的制备方法,其特征在于:步骤(1)中的加热的温度为70℃~95℃。
5.根据权利要求3所述的一种电致变色用准固态电解质的制备方法,其特征在于:所述步骤(2)中准固态电解质量为1g~40g。
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US5280381A (en) * | 1992-07-27 | 1994-01-18 | Ford Motor Company | Process for preparing a solid polymeric fast ion conducting layer for an electrochromic device |
CN110183700A (zh) * | 2019-05-30 | 2019-08-30 | 中国科学技术大学 | 银纳米线柔性透明导电电极的制备方法、电致变色器件及其制备方法 |
CN110196522A (zh) * | 2019-06-26 | 2019-09-03 | 上海洞舟实业有限公司 | 一种白光电致变色器件的制备方法 |
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US5280381A (en) * | 1992-07-27 | 1994-01-18 | Ford Motor Company | Process for preparing a solid polymeric fast ion conducting layer for an electrochromic device |
CN110183700A (zh) * | 2019-05-30 | 2019-08-30 | 中国科学技术大学 | 银纳米线柔性透明导电电极的制备方法、电致变色器件及其制备方法 |
CN110196522A (zh) * | 2019-06-26 | 2019-09-03 | 上海洞舟实业有限公司 | 一种白光电致变色器件的制备方法 |
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