CN106916379A - 一种超级电容器用聚丙烯隔膜 - Google Patents
一种超级电容器用聚丙烯隔膜 Download PDFInfo
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Abstract
本发明公开了一种超级电容器用聚丙烯隔膜，其由以下重量份的原料制成：聚丙烯70‑80份、聚丁二酸丁二醇酯10‑15份、碳纤维8‑12份、山梨醇6‑9份、六氟磷锂3‑5份、十二烷基磺酸钠3‑7份、羧甲基纤维素钠5‑10份、聚乙烯醇20‑30份、甘草酸二钾6‑10份、纳米二氧化硅7‑11份、甲基丙烯酸羟丙酯5‑8份。本发明提供的超级电容器用聚丙烯隔膜致密、低电阻、高强度、功率密度高，可很好的降低超级电容器的内阻，提高超级电容器的工作性能。
Description
技术领域
本发明涉及一种超级电容器用聚丙烯隔膜。
背景技术
超级电容器又称双电层电容器、黄金电容、法拉第电容，是一种新型的储能原件，它兼有物理电容器和电池的特性，能提供比物理电容器更高的能量密度，比电池具有更高的功率密度和更长的循环寿命，并且这种电容器己在工业领域实现产业化和实际应用。超级电容器是利用双电层原理的电容器。当外加电压加到超级电容器的两个极板上时，与普通电容器一样，极板的正电极存储正电荷，负极板存储负电荷，在超级电容器的两极板上电荷产生的电场作用下，在电解液与电极间的界面上形成相反的电荷，以平衡电解液的内电场，这种正电荷与负电荷在两个不同相之间的接触面上，以正负电荷之间极短间隙排列在相反的位置上，这个电荷分布层叫做双电层，因此电容量非常大。当两极板间电势低于电解液的氧化还原电极电位时，电解液界面上电荷不会脱离电解液，超级电容器为正常工作状态(通常为3V以下)，如电容器两端电压超过电解液的氧化还原电极电位时，电解液将分解，为非正常状态。由于随着超级电容器放电，正、负极板上的电荷被外电路泄放，电解液的界面上的电荷相应减少。由此可以看出：超级电容器的充放电过程始终是物理过程，没有化学反应。因此性能是稳定的，与利用化学反应的蓄电池是不同的。超级电容器具有以下优点：在很小的体积下达到法拉级的电容量；无须特别的充电电路和控制放电电路；和电池相比过充、过放都不对其寿命构成负面影响；从环保的角度考虑，它是一种绿色能源；超级电容器可焊接，因而不存在像电池接触不牢固等问题。
新产品和新功能的电子整机日新月异、产品的市场寿命越来越短，这对电子元件各个方面要求更高。且由于受世界经济环境的影响，电容器产业面临能源成本、材料成本、劳动力成本、环保成本的全面上涨，而产品销售价格却一再下降，整个行业的经营受到双重压力。所以电子元件产业要变强，必须做到企业创新、行业创新、产品创新，才能跟上电子信息整机发展的需要。从结构上看，超级电容器主要由电极、电解质、隔膜、端板、引线和封装材料组成，其中电极、电解质和隔膜的组成和质量对超级电容器的性能起着决定性的影响，采用何种电极、电解质和隔膜材料将基本决定最终产品的类型与特性。为此，我们从隔膜着手，开发新的高性能的隔膜，提供一种超级电容器用聚丙烯隔膜。
发明内容
本发明的目的在于提供一种超级电容器用聚丙烯隔膜。
为了实现上述目的，本发明提供了一种超级电容器用聚丙烯隔膜，由以下重量份的原料制得：聚丙烯70-80份、聚丁二酸丁二醇酯10-15份、碳纤维8-12份、山梨醇6-9份、六氟磷锂3-5份、十二烷基磺酸钠3-7份、羧甲基纤维素钠5-10份、聚乙烯醇20-30份、甘草酸二钾6-10份、纳米二氧化硅7-11份、甲基丙烯酸羟丙酯5-8份
其还包含月桂醇硫酸钠10-18份。
其还包含六偏磷酸钠1-4份。
有益效果：本发明提供的超级电容器用聚丙烯隔膜致密、低电阻、高强度、功率密度高，可很好的降低超级电容器的内阻，提高超级电容器的工作性能。
具体实施方式
实施例1
本实施例提供的一种超级电容器用聚丙烯隔膜，由以下重量份的原料制得：聚丙烯70份、聚丁二酸丁二醇酯10份、碳纤维8份、山梨醇6份、六氟磷锂3份、十二烷基磺酸钠3份、羧甲基纤维素钠5份、聚乙烯醇20份、甘草酸二钾6份、纳米二氧化硅7份、甲基丙烯酸羟丙酯5份。
实施例2
本实施例提供的一种超级电容器用聚丙烯隔膜，由以下重量份的原料制得：聚丙烯80份、聚丁二酸丁二醇酯15份、碳纤维12份、山梨醇9份、六氟磷锂5份、十二烷基磺酸钠7份、羧甲基纤维素钠10份、聚乙烯醇30份、甘草酸二钾10份、纳米二氧化硅11份、甲基丙烯酸羟丙酯8份、月桂醇硫酸钠18份。
实施例3
本实施例提供的一种超级电容器用聚丙烯隔膜，由以下重量份的原料制得：聚丙烯80份、聚丁二酸丁二醇酯15份、碳纤维12份、山梨醇9份、六氟磷锂5份、十二烷基磺酸钠7份、羧甲基纤维素钠10份、聚乙烯醇30份、甘草酸二钾10份、纳米二氧化硅11份、甲基丙烯酸羟丙酯8份、月桂醇硫酸钠18份、六偏磷酸钠4份。
实施例4
上述实施例1-3使用的生产工艺为常规生产工艺，其步骤为：将各组分按质量配比在超声波反应器下超声共混1～3小时，过滤除去不溶物，静置脱泡，得到共混液；然后用流延法将共混液流延在玻璃模具上，膜的厚度控制在10～50um，在室温下干燥，干燥后将膜揭下，接着将揭下的膜置于干燥箱中进行热交联，在60～160℃温度范围内热交联10小时。
Claims (3)
1.一种超级电容器用聚丙烯隔膜，其特征在于由以下重量份的原料制成：聚丙烯70-80份、聚丁二酸丁二醇酯10-15份、碳纤维8-12份、山梨醇6-9份、六氟磷锂3-5份、十二烷基磺酸钠3-7份、羧甲基纤维素钠5-10份、聚乙烯醇20-30份、甘草酸二钾6-10份、纳米二氧化硅7-11份、甲基丙烯酸羟丙酯5-8份。
2.根据权利要求1所述的一种超级电容器用聚丙烯隔膜，其特征在于：其还包含月桂醇硫酸钠10-18份。
3.根据权利要求2所述的一种超级电容器用聚丙烯隔膜，其特征在于：其还包含六偏磷酸钠1-4份。
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| CN113130205A (zh) * | 2020-01-16 | 2021-07-16 | 安徽英和电气有限公司 | 电容器 |
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| CN110931686B (zh) * | 2019-10-25 | 2021-11-05 | 合肥国轩高科动力能源有限公司 | 聚丁二酸乙二醇酯微球乳液涂覆型锂电池隔膜的制备方法 |
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