Lignin-Derived Carbon-Coated Functional Paper for Printed Electronics
Lignin-Derived Carbon-Coated Functional Paper for Printed Electronics
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DOI：
10.1021/acsaelm.1c00502
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发表时间：
2021-08-31
影响因子：
4.7
通讯作者：
Demir, Muslum
中科院分区：
文献类型：
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作者：
Altay, Bilge Nazli;Aksoy, Burak;Demir, Muslum
下一代印刷电子产品必须具有高性能、高性价比、多功能、可持续和环境友好等特点。在此，我们报道了用于印刷电子产品的柔性碳涂覆纸的制造，其确保了上述要求。多功能碳涂覆的基底通过采用复印纸、纤维素纳米纤维（CNF）和木质素衍生的石墨碳分别作为基础基底、粘合剂和导电颜料，使用可扩展的和简单的Mayer棒涂覆和压延方法来实现。通过压延施加的压力导致碳涂布纸的电阻降低96%。Western分析表明，碳层是亲水性的，并能够氢键。得到的介电常数是一个数量级小于复印纸，表明碳颗粒之间的CNF粘合剂阻碍极化机制。阻抗被测量为频率依赖性和电容性。电阻、阻抗和介电值表明碳涂层纸有利于电容性应用。用生物基粘合剂和导电颜料制造柔性基板为未来柔性电容器、传感器和可穿戴设备的可持续和环保印刷电子产品迈出了重要的一步，特别是对于需要可持续地进行报废处理的应用。
Next-generation printed electronics is required to be of high performance, cost-effective, multifunctional, sustainable, and environmentally benign. Herein, we report the manufacturing of a flexible carbon-coated paper for printed electronics ensuring the abovementioned requirements. The multifunctional carbon-coated substrate is achieved by employing copy paper, cellulose nanofibers (CNFs), and lignin-derived graphitic carbon as a base substrate, binder, and conductive pigment, respectively, using the scalable and simple Mayer rod coating and calendering methods. The pressure applied by the calendering led to a 96% decrease in electrical resistance for the carbon-coated paper. Wettability analysis revealed that the carbon layer is hydrophilic and capable of hydrogen bonding. The dielectric constant is obtained to be an order of magnitude less than that of the copy paper, indicating that the CNF binder between the carbon particles impedes the polarization mechanism. The impedance is measured as frequency-dependent and capacitive. The resistance, impedance, and dielectric values suggest that the carbon-coated paper is favorable for capacitive applications. Fabricating the flexible substrate with the biobased binder and conductive pigment introduces a significant step in sustainable and environmentally friendly printed electronics for future flexible capacitors, sensors, and wearable devices, especially for the applications where end-of-life disposal needs to be sustainable.