A dual functional material: Spirulina Platensis waste-supported Pd-Co catalyst as a novel promising supercapacitor electrode


KARAKAŞ D. E., Akdemir M., MOHAMED ATABANI A., KAYA M.

FUEL, vol.304, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 304
  • Publication Date: 2021
  • Doi Number: 10.1016/j.fuel.2021.121334
  • Journal Name: FUEL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Biotechnology Research Abstracts, Chemical Abstracts Core, Communication Abstracts, INSPEC, Metadex, Pollution Abstracts, Civil Engineering Abstracts
  • Keywords: Methanolysis, Hydrogen, SPW-Pd-Co catalyst, Spirulina Platensis, Supercapacitor, SPENT COFFEE GROUNDS, SODIUM-BOROHYDRIDE HYDROLYSIS, METAL-FREE CATALYST, HYDROGEN GENERATION, ACTIVATED CARBONS, POROUS CARBON, BIO-OIL, METHANOLYSIS, PERFORMANCE, STORAGE
  • Erciyes University Affiliated: Yes

Abstract

In the present study, Spirulina Platensis waste-supported Pd-Co (SPW-Pd-Co) catalyst was used as an efficient catalyst for the methanolysis reaction of sodium borohydride (NaBH4); moreover, the produced SPW-Pd-Co catalyst was tested as a supercapacitor electrode material for the first time. In this context, the SPW-Pd-Co catalyst was synthesized by the treatment of the Spirulina Platensis waste (SPW) with 1-7 M HCl, 1 mL PdCl2 solution (2% w/w) and 1, 2, 3, 4, and 5 mL CoCl2 center dot 6H(2)O solution (5% w/w). Under optimum conditions, the most active catalyst was obtained by burning with 3 M HCl-Pd-4 mL Co2+ solution at 600 degrees C for 90 min. The maximum rate of hydrogen generation (HGR) obtained at 30 degrees C from the NaBH4 methanolysis reaction was found to be 5497.7 mLmin(-1) gcat(-1), and the catalyst activation energy was found to be 10.32 kJ mol(-1). The gravimetric capacitance of the prepared electrode was calculated as 50 F/g at 2 A/g current density. The capacitance values of the supercapacitor are at a significant level in terms of capacity and the cost.