Upcycling of waste printed circuit boards into metallic pyrolytic carbon for supercapacitor electrode

Cebeci H. H., Yılmaz İ., YARGI Ö., Açıkalın K., Gelir A., KANTÜRK FİGEN A.

Journal of Materials Science: Materials in Electronics, vol.34, no.4, 2023 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 34 Issue: 4
  • Publication Date: 2023
  • Doi Number: 10.1007/s10854-023-09817-6
  • Journal Name: Journal of Materials Science: Materials in Electronics
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Chemical Abstracts Core, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, MEDLINE, Metadex, Civil Engineering Abstracts
  • Yıldız Technical University Affiliated: Yes


Upcycling of electronic waste is the efficient strategy to minimize the negative effect on environment. In the present study, e-waste (originating from small household appliances) was upcycled into the metal contented pyrolytic carbon (C-WPCB) through a simple pyrolysis without activation or any other additional processes. After crushing and fractionating, pyrolysis was performed at 500 °C under nitrogen atmosphere. The obtained metallic pyrolytic carbon was characterized by well-known techniques such as SEM–EDS, XRF, XRD, ATR/FT-IR, TG/DTG, and BET analyses and utilized for supercapacitor electrode preparation. For this purpose, nickel foam was electrochemically coated by C-WPCB which was previously dispersed in three different solutions: 1.5 M H2SO4, 3 M KCl, and 1.5 M KOH, respectively. Electrochemical characterization of the prepared electrodes was performed by cyclic voltammetry (CV) at different scan rates and galvanostatic charge–discharge (GCD) methods at different current densities in 6 M KOH electrolyte in half-cell configuration. The best performance was obtained for the electrode prepared in H2SO4 solution where the specific capacitance, specific power, and specific energy were found as 39.5 F/g, 25.0 kW/kg, and 16.5 Wh/kg at 5 A/g, respectively.