Enhanced performance of CNT supported bimetallic PdM (M=Cr, Ta, Bi, Hf) catalysts as anode electrode for ammonia borane electrooxidation

Kaya Ş., Caglar A., Demir Kıvrak H.

Process Safety and Environmental Protection, vol.191, pp.1896-1904, 2024 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 191
  • Publication Date: 2024
  • Doi Number: 10.1016/j.psep.2024.09.080
  • Journal Name: Process Safety and Environmental Protection
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, Environment Index, Food Science & Technology Abstracts, Greenfile, INSPEC, Metadex, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Page Numbers: pp.1896-1904
  • Keywords: Ammonia borane, Bimetallic, Carbon nanotube, Electrooxidation
  • Eskisehir Osmangazi University Affiliated: Yes

Abstract

Herein, carbon nanotube (CNT) supported PdM (M=Cr, Ta, Bi, Hf) catalysts are prepared by sodium borohydride (NaBH4) reduction method. The analytical techniques such as X-ray diffraction (XRD), scanning electron microscopy-energy dispersive X-ray (SEM-EDX), and X-ray photoelectron spectroscopy (XPS) are utilized for the characterization of the bimetallic catalysts. The ammonia borane electrooxidation activities of the bimetallic catalysts are defined by cyclic voltammetry (CV) measurements. The stability of the bimetallic catalysts and resistance to ammonia borane electrooxidation are determined by using chronoamperometry (CA) and electrochemical impedance spectroscopy (EIS) measurements. The highest catalytic activity for ammonia borane electrooxidation is obtained as 52.60 mA/cm2 with PdCr/CNT catalyst. PdCr/CNT catalyst with high catalytic activity could be promising as an anode catalyst for direct ammonia borane fuel cell.