Large reduction in electrical contact resistance of flexible carbon nanotube/silicone rubber composites by trifluoroacetic acid treatment
Large reduction in electrical contact resistance of flexible carbon nanotube/silicone rubber composites by trifluoroacetic acid treatment
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DOI：
10.1016/j.compscitech.2017.03.004
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发表时间：
2017-05-03
影响因子：
9.1
通讯作者：
Mizusaki, Soichiro
中科院分区：
文献类型：
--
作者：
Lee, Sang-Eui;Jee, Sang Soo;Mizusaki, Soichiro
我们报告称，通过化学表面处理，可拉伸碳纳米管/硅橡胶复合材料与银电极之间的接触电阻大大降低，同时复合材料的导电性也得到增强。反应溶剂三氟乙酸就可以达到这个目的。此外，该处理可以在微观水平上实现均匀蚀刻，而几乎不会牺牲纳米复合材料的表面粗糙度。经过十秒和三十秒的处理，1.0 wt%纳米管复合材料的电导率提高了约两倍和三倍，这是由于接触电阻降低至原始值的一半所致。有意义的是，我们的发现可以成为一种减少纳米粒子负载同时保持高水平导电性的方法，从伸长率与导电粒子负载成反比的角度来看，这对于确保柔性或拉伸性至关重要。 (C) 2017 Elsevier Ltd. 保留所有权利。
We report a large reduction in contact resistance between stretchable carbon nanotube/silicone rubber composites and silver electrodes by a chemical surface treatment, accompanied by an enhancement in the electrical conductivity of the composites. The reactive solvent, trifluoroacetic acid, works for the purpose. In addition, the treatment makes a uniform etching in a micro level with little sacrifice in surface roughness of the nanocomposites. The electrical conductivity of 1.0 wt% nanotube composite was enhanced approximately two-fold and three-fold by ten- and thirty-second treatment, which was induced by the reduction in the contact resistance to one half of an original value. It is meaningful that our finding can be an approach to reduce the nanoparticle loading while keeping electrical conductivity in a high level, which can be crucial for securing flexibility or stretchability in a viewpoint that the elongation is inversely proportional to the conductive particle loading. (C) 2017 Elsevier Ltd. All rights reserved.