CNT-Supported Multi-Metallic (Ga@PdAgCo) Anode Catalysts: Synthesis, Characterization, and Glucose Electrooxidation Application


KAYA Ş., Caglar A., DEMİR KIVRAK H.

Journal of Electronic Materials, vol.52, no.2, pp.887-895, 2023 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 52 Issue: 2
  • Publication Date: 2023
  • Doi Number: 10.1007/s11664-022-10079-x
  • Journal Name: Journal of Electronic Materials
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Applied Science & Technology Source, Chemical Abstracts Core, Chimica, Compendex, Computer & Applied Sciences, INSPEC
  • Page Numbers: pp.887-895
  • Keywords: Ag, carbon nanotube, Co, Ga, glucose, Pd
  • Van Yüzüncü Yıl University Affiliated: No

Abstract

© 2022, The Minerals, Metals & Materials Society.Here, Ga@PdAgCo catalysts were prepared by sequential reduction using carbon nanotubes (CNT) as support material. The catalysts at different weight percentages were characterized by inductively coupled plasma-mass spectrometry (ICP-MS), transmission electron microscopy (TEM), x-ray photoelectron spectroscopy (XPS), and x-ray diffraction (XRD) analytical techniques. Chronoamperometry (CA), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS) measurements were applied to examine the glucose electrooxidation performance of the catalysts. Among the catalysts, the 7% Ga@PdAgCo(CNT) multi-metallic catalyst provided the best mass activity and specific activity of 231.08 mA/mg Pd and 2.475 mA/cm2, respectively. EIS results revealed that the 7% Ga@PdAgCo(CNT) catalyst has a faster electron transfer rate with low (632 Ω) charge transfer resistance (Rct). Consequently, the 7% Ga@PdAgCo(CNT) catalyst stands out as a potential anode catalyst for direct glucose fuel cells.