Lignin-Derived Carbon-Coated Functional Paper for Printed Electronics

Abstract

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 carboncoated 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.

Efficient N-Doped Porous Carbonaceous CO2 Adsorbents Derived from Commercial Urea-Formaldehyde Resin

“…The one relatively intense peak and another broad peak located at around 22.3° and 43.8° could be attributed to the (002) and (100) reflections of the disordered carbon layer. The high intensity in the low angle region claims the existence of plentiful microporosity within the carbon framework, which is in accord with the nitrogen adsorption–desorption results. − …”

Sustainable Macromolecular Materials in Flexible Electronics

“…[ 277 ] Electrospinning or chemical functionalization can be used for this. [ 178,278 ] Wang et al. created crosslinked electrodes with PVA using lignin and cellulose.…”

“…[277] Electrospinning or chemical functionalization can be used for this. [178,278] Wang et al created crosslinked electrodes with PVA using lignin and cellulose. One side of this multilayer structure was more rigid and durable, while the other side had high adhesion strength and was more flexible.…”

Hydrothermal Synthesis of Biomass-Derived Magnetic Carbon Composites for Adsorption and Catalysis

“…Previous research has shown the potential to produce functional iron oxide materials supported on or encapsulated within hydrochar. For example, carbon-encapsulated nanoparticles have been produced using glucose as the carbon source. , Other work has focused on post-synthesis modification of hydrochars produced from waste lignocellulosic materials through impregnation with an appropriate iron precursor. − The latter approach typically requires pyrolysis at temperatures in excess of 600 °C to introduce porosity into carbon. Rattanachueskul et al have demonstrated the conversion of sugarcane bagasse and an iron precursor into magnetic carbon composites via a one-pot synthesis with a 24 h reaction time .…”