Highly Stable Graphene Inks Based on Organic Binary Solvents
Highly Stable Graphene Inks Based on Organic Binary Solvents
复制标题
基于有机二元溶剂的高度稳定的石墨烯墨水
DOI：
10.1002/ppsc.202200153
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发表时间：
2023
影响因子：
2.7
通讯作者：
Ahmed M
中科院分区：
文献类型：
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作者：
Ahmed M
在可穿戴电子产品的开发中，配制高度稳定的石墨烯基导电油墨，使其在储存期间具有一致的电性能仍然是一个重大挑战。通过使用两种不同的有机二元溶剂首次制备了两种高度稳定的石墨烯基油墨（环己酮：乙二醇（CEG）油墨和环己酮：松油醇（CT）油墨），而不使用溶剂交换方法。这两种墨水都显示出非常高的稳定性（即使在两个月后也保持稳定），电性能的变化可以忽略不计。在这里，它演示了如何利用这种油墨涂覆柔性基材以创建可穿戴的电子纺织品。这两种油墨涂覆的电子纺织品都显示出显著低的薄层电阻（CEG油墨为209.1 Ω □− 1，CT油墨为10322.4 Ω □− 1），两个月内电阻增加不到15%。因此，这些油墨提供了高生产率和再现性，并且可以成为配制石墨烯基油墨的最有效方法之一。
Formulating highly stable graphene‐based conductive inks with consistency in electrical properties over the storage period has remained a significant challenge in the development of wearable electronics. Two highly stable graphene‐based inks (Cyclohexanone:Ethylene glycol (CEG) ink and Cyclohexanone:Terpineol (CT) ink) are prepared by using two different organic binary solvents, for the first time, without using solvent exchange methods. Both the inks display remarkably high stability (stable even after two months) with negligible variability in electrical properties. Here, it is demonstrated how such inks can be utilized to coat flexible substrates to create wearable e‐textiles. Both the inks coated e‐textiles show significantly low sheet resistance (≈209.1 Ω □−1for CEG ink and ≈322.4 Ω □−1CT ink) that show less than a 15% increase in electrical resistance over two months. Therefore, these inks offer high productivity and reproducibility and can be one of the most effective methods for formulating graphene‐based inks.