Graphene nanosheets derived from waste plastic for cost-effective thermoelectric applications

• DOI: 10.1016/j.rinma.2022.100260
• Publication Date: 2022-02-08T05:06:46Z
• Authors: Kuldeep K. Garg; Sandeep Pandey; Amit Kumar; Aniket Rana; Nanda Gopal Sahoo; Rajiv K. Singh
• Keywords: Waste plastics; Thermoelectric applications; Thermoelectric materials; TA401-492; 0202 electrical engineering, electronic engineering, information engineering; 02 engineering and technology; Graphene nanosheets; Materials of engineering and construction. Mechanics of materials; 7. Clean energy; 12. Responsible consumption

Herein, we report the synthesis of graphene nanosheets (GNs) derived from plastic waste for cost-effective thermoelectric (TE) applications. The GNs was done as per our present process, where a two-step pyrolysis process carried at temperature range 400 °C–850 °C by using Al2O3 catalytic and degradation template, while nickel metal-based beds were used to get high-quality indigenously developed 100 Kg batch pilot-scale plant. Raman, X-ray diffraction (XRD), transmission electron microscopy (TEM) analysis showed presence 4–5 nm thick sheets GNs. After successful plastics, TE properties thus synthesized investigated. low resistivity 3.93 × 10−2 Ω-m room temperature, which are further decreases with an increase in temperature. Seebeck coefficient values show that material behaves p-type semiconductor. figure merit ZT signatory value 0.1 10−6 426 K corresponding within results indicate plastic-derived can be variety