Supported PbHfCd electrocatalysts over carbon-hydroxyapatite composite fabricated by precipitation and NaBH4 reduction methods for glucose electrooxidation

Ulaş B., Yilmaz Y., Koç S., DEMİR KIVRAK H.

Journal of Solid State Electrochemistry, vol.27, no.12, pp.3425-3437, 2023 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 27 Issue: 12
  • Publication Date: 2023
  • Doi Number: 10.1007/s10008-023-05635-2
  • Journal Name: Journal of Solid State Electrochemistry
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, Compendex, INSPEC
  • Page Numbers: pp.3425-3437
  • Keywords: Cd, Electrooxidation, Glucose, Hf, Hydroxyapatite, Pb
  • Van Yüzüncü Yıl University Affiliated: Yes

Abstract

Fuel cells are one excellent option for converting energy through green technology. Due to its accessibility and high-energy density, glucose can be employed as a fuel in fuel cells. In this study, hydroxyapatite (HAp) was prepared by the precipitation method, and carbon-doped HAp supported PbHfCd (PbHfCd/C-HAp) composite electrocatalysts at varying metal ratios for the glucose electrooxidation were synthesized via NaBH4 reduction method. Inductively coupled plasma mass spectrometry (ICP-MS), scanning electron microscopy (SEM-EDX), X-ray diffraction analysis (XRD), elemental mapping, and transmission electron microscopy (TEM) were used to evaluate the chemical structure, crystallinity, and morphological characteristics of the PbHfCd/C-HAp. Chronoamperometry (CA), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS) were utilized to scrutinize the electrocatalytic activity and stability of PbHfCd/C-Haps for glucose electrooxidation. The findings demonstrate that HAp enhances the glucose electrooxidation of PbHfCd alloy. With a specific activity of 4.73 mA/cm2, Pb80Hf10Cd10/C-HAp is the most stable and active anode electrocatalyst in this work, outperforming HAp by 4.9 times.