CN108615617A - 一种石墨烯/pedot：pss复合纳米自支撑薄膜的制备方法及其产品和应用 - Google Patents
一种石墨烯/pedot：pss复合纳米自支撑薄膜的制备方法及其产品和应用 Download PDFInfo
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Abstract
本发明涉及一种石墨烯/PEDOT：PSS复合纳米自支撑薄膜的制备方法及其产品和应用，具体方法是先将氧化石墨烯溶于水中，搅拌均匀，制得氧化石墨烯溶液，然后将PEDOT：PSS溶液滴入所得氧化石墨烯溶液中，搅拌均匀，然后将混合液缓慢滴加在滤膜上，真空抽滤；最后将石墨烯/PEDOT：PSS复合纳米自支撑薄膜烘干后从滤膜剥离下来，放入管式加热炉进行热处理；该方法简单，制得的复合膜石墨烯有序排列，呈层状结构，具有优异的化学性能，在柔性固态超级电容器，柔性锂离子电池等方面有着广泛的应用。
Description
技术领域
本发明属于纳米储能材料领域，涉及一种石墨烯/PEDOT：PSS复合纳米自支撑薄膜的制 备方法，还涉及由该方法制得的产品和应用。
背景技术
石墨烯独特的二维结构和出色的理化特性，使其在超级电容器中的应用具有极大的潜力。 与传统的多孔碳材料相比，石墨烯具有非常高的导电性，大的比表面积及大量的层间构造， 从而成为双电层电容器有前景的电极材料选择和制备赝电容电极活性成分的载体材料。但由 于π-π堆积和范德华力的存在，导致石墨烯易团聚，从而降低了石墨烯的比表面积和比容量。 因此，急需一种解决石墨烯易团聚的方法，来提高石墨烯基电极材料的比表面积和比容量。 此外本方法制备的薄膜相较于纯石墨烯薄膜，导电性和机械性能有明显增强。
发明内容
有鉴于此，本发明的目的之一在于提供一种石墨烯/PEDOT：PSS复合纳米自支撑薄膜的 制备方法；本发明的目的之二在于提供由上述方法制得的石墨烯/PEDOT：PSS复合纳米自支 撑薄膜；本发明的目的之三在于提供石墨烯/PEDOT：PSS复合纳米自支撑薄膜的应用。
为达到上述目的，本发明提供如下技术方案：
1、一种石墨烯/PEDOT：PSS复合纳米自支撑薄膜的制备方法，具体步骤如下：
(1)将氧化石墨烯溶于水中，搅拌均匀，制得氧化石墨烯溶液，记为样品1；
(2)将PEDOT：PSS溶液滴入步骤(1)所得氧化石墨烯溶液中，搅拌均匀，记为样品2；
(3)将步骤(2)制得的样品2缓慢滴加在滤膜上，真空抽滤；
(4)将抽滤后的材料烘干后从滤膜剥离下来，放入管式加热炉进行热处理，得石墨烯 /PEDOT：PSS复合纳米自支撑薄膜。
优选的，步骤(1)中，所述氧化石墨烯溶液中氧化石墨烯的浓度为1～5mg/ml；搅拌时 间为12～24小时。
优选的，所述氧化石墨烯溶液中氧化石墨烯的浓度为2mgl/ml，搅拌时间为24小时。
优选的，步骤(2)中，所述PEDOT：PSS溶液加入量按PEDOT：PSS溶液与所述氧化 石墨烯溶液的体积比为1～4：20加入。
优选的，步骤(2)中，所述搅拌为搅拌30～180min。
6.根据权利要求1所述石墨烯/PEDOT：PSS复合纳米自支撑薄膜的制备方法，其特征在 于：步骤(4)中，所述热处理条件为50～150℃处理30min。
7.由所述的制备方法制得的石墨烯/PEDOT：PSS复合纳米自支撑薄膜。
8.所述石墨烯/PEDOT：PSS复合纳米自支撑薄膜在制备电极材料或超级电容器中的应用。
本发明的有益效果在于：一种石墨烯/PEDOT：PSS复合纳米自支撑薄膜的制备方法，该 制备方法简单，可在常温下进行，并且本发明使用真空抽滤自组装法可实现氧化石墨烯片的 有序排列，易于得到层状结构比较好的纳米复合膜；本发明在制备过程中PEDOT：PSS与氧 化石墨烯复合，由于PEDOT具有较高的电导率、较宽的电压窗口、高容量、较高的电荷移 动性、良好的热稳定性以及良好的化学稳定性，因此制得的产品具有优良的电化学性能，可 以作为储能材料在柔性固态超级电容器，柔性锂离子电池等方面广泛应用。
附图说明
为了使本发明的目的、技术方案和有益效果更加清楚，本发明提供如下附图进行说明：
图1为石墨烯/PEDOT：PSS复合纳米自支撑薄膜实物图。
图2为石墨烯/PEDOT：PSS复合纳米自支撑薄膜横截面的SEM图。
图3为石墨烯/PEDOT：PSS复合纳米自支撑薄膜拉伸试验结果。
具体实施方式
下面将结合附图，对本发明的优选实施例进行详细的描述。
实施例1
一种石墨烯/PEDOT：PSS复合纳米自支撑薄膜的制备方法，具体步骤如下：
(1)将40mg氧化石墨烯溶于20mL去离子水中，常温磁力搅拌24h，得氧化石墨烯 溶液，记为样品1；
(2)将4μL PEDOT：PSS溶液滴入步骤(1)所得氧化石墨烯溶液中，搅拌60min， 记为样品2；
(3)将步骤(2)制得的样品2缓慢滴加在滤膜上，利用真空抽滤自组装法抽制薄膜；
(4)将抽制的薄膜待烘干后从滤膜剥离下来，放入管式加热炉50～150℃热处理30min。
实施例2
一种石墨烯/PEDOT：PSS复合纳米自支撑薄膜的制备方法，具体步骤如下：
(1)将20mg氧化石墨烯溶于20mL去离子水中，常温磁力搅拌24h，得氧化石墨烯 溶液，记为样品1；
(2)将2μL PEDOT：PSS溶液滴入步骤(1)所得氧化石墨烯溶液中，搅拌60min，记 为样品2。
(3)将步骤(2)制得的样品2缓慢滴加在滤膜上，利用真空抽滤自组装法抽制薄膜；
(4)将抽制的薄膜待烘干后从滤膜剥离下来，放入管式加热炉50～150℃热处理30min。
实施例3
一种石墨烯/PEDOT：PSS复合纳米自支撑薄膜的制备方法，具体步骤如下：
(1)将100mg氧化石墨烯溶于20mL去离子水中，常温磁力搅拌24h，得氧化石墨烯溶液，记为样品1；
(2)将4μL PEDOT:PSS溶液滴入步骤(1)所得氧化石墨烯溶液中，搅拌60min，记 为样品2；
(3)将步骤(2)制得的样品2缓慢滴加在滤膜上，利用真空抽滤自组装法抽制薄膜；
(4)将抽制的薄膜待烘干后从滤膜剥离下来，放入管式加热炉50～150℃热处理30min。
实施例4
一种石墨烯/PEDOT：PSS复合纳米自支撑薄膜的制备方法，具体步骤如下：
(1)将40mg氧化石墨烯溶于20mL去离子水中，常温磁力搅拌24h，得氧化石墨烯 溶液，记为样品1；
(2)将1μL PEDOT：PSS溶液滴入步骤(1)所得氧化石墨烯溶液中，搅拌60min，记 为样品2；
(3)将样品2缓慢滴加在滤膜上，利用真空抽滤自组装法抽制薄膜；
(4)将抽制的薄膜待烘干后从滤膜剥离下来，放入管式加热炉50～150℃热处理30min。
检测薄膜的电化学性能，结果如表1所示，结果显示制得薄膜相较于氧化石墨烯薄膜， 电导率有极大的提高，表明电化学性能优良，可在柔性固态超级电容器，柔性锂离子电池等 方面广泛的应用。
表1、薄膜的电化学性能
制得的石墨烯/PEDOT：PSS复合纳米自支撑薄膜如图1所示，薄膜截面在扫描电子显微 镜下观察到的图像如图2所示。结果显示，制得的石墨烯/PEDOT：PSS复合纳米自支撑薄膜 石墨烯有序排列，层状结构好。制得的石墨烯/PEDOT：PSS复合纳米自支撑薄膜拉伸试验结 果如上图3所示，实验证明在相同应变下石墨烯/PEDOT：PSS复合纳米自支撑薄膜拉伸强度 为44.2MPa，氧化石墨烯薄膜拉伸强度仅为23.6MPa，证实我们所制备的石墨烯/PEDOT：PSS 复合纳米自支撑薄膜机械性能有显著提升。
制得的石墨烯/PEDOT：PSS复合纳米自支撑薄膜机械性能展示。结果显示，制得的石墨 烯/PEDOT：PSS复合纳米自支撑薄膜有比较好的机械性能。
最后说明的是，以上优选实施例仅用以说明本发明的技术方案而非限制，尽管通过上述优 选实施例已经对本发明进行了详细的描述，但本领域技术人员应当理解，可以在形式上和细 节上对其作出各种各样的改变，而不偏离本发明权利要求书所限定的范围。
Claims (8)
1.一种石墨烯/PEDOT：PSS复合纳米自支撑薄膜的制备方法，其特征在于：具体步骤如下：
(1)将氧化石墨烯溶于水中，搅拌均匀，制得氧化石墨烯溶液，记为样品1；
(2)将PEDOT：PSS溶液滴入步骤(1)所得氧化石墨烯溶液中，搅拌均匀，记为样品2；
(3)将步骤(2)制得的样品2缓慢滴加在滤膜上，真空抽滤；
(4)将抽滤后的材料烘干后从滤膜剥离下来，放入管式加热炉进行热处理，得石墨烯/PEDOT：PSS复合纳米自支撑薄膜。
2.根据权利要求1所述石墨烯/PEDOT：PSS复合纳米自支撑薄膜的制备方法，其特征在于：步骤(1)中，所述氧化石墨烯溶液中氧化石墨烯的浓度为1～5mg/ml；搅拌时间为12～24小时。
3.根据权利要求2所述石墨烯/PEDOT：PSS复合纳米自支撑薄膜的制备方法，其特征在于：所述氧化石墨烯溶液中氧化石墨烯的浓度为2mg/ml，搅拌时间为24小时。
4.根据权利要求1所述石墨烯/PEDOT：PSS复合纳米自支撑薄膜的制备方法，其特征在于：步骤(2)中，所述PEDOT：PSS溶液加入量按PEDOT：PSS溶液与所述氧化石墨烯溶液的体积比为1～4：200加入。
5.根据权利要求1所述石墨烯/PEDOT：PSS复合纳米自支撑薄膜的制备方法，其特征在于：步骤(2)中，所述搅拌为搅拌30～180min。
6.根据权利要求1所述石墨烯/PEDOT：PSS复合纳米自支撑薄膜的制备方法，其特征在于：所述热处理条件为50～300℃处理30min。
7.由权利要求1～6任一项所述的制备方法制得的石墨烯/PEDOT：PSS复合纳米自支撑薄膜。
8.权利要求7所述石墨烯/PEDOT：PSS复合纳米自支撑薄膜在制备电极材料或超级电容器中的应用。
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