Article 2023 · 1 citations

Alternative Support Material to Platinum Catalyst Used for Oxygen Reduction Reaction: Nonporous Carbon

Ozturk, Aysenur, Yurtcan, Ayse Bayrakceken

Abstract

In this study, unlike porous carbon as a conventional catalyst support material in fuel cells, nonporous carbon was synthesized in the presence of different HCl concentrations (0.2 M-1 M) and investigated as a support material for platinum (Pt) catalysts in the oxygen reduction reaction (ORR). Since the micropore volume of the synthesized carbons is negligible, the detected surface areas with Brunauer-Emmett-Teller (BET) method were between the range of 19-23 m2/g. Among the support materials, the carbon-supported Pt catalyst synthesized in the presence of 1 M HCl was investigated electrochemically in terms of hydrogen oxidation (HOR) and ORR half-cell reactions in the three-electrode system. The Pt catalyst supported with nonporous carbon, synthesized using 1 M HCl, reached the maximum limiting current value of-1.2 mA/cm2 (@1600 rpm, 5 mV/s) at ORR hydrodynamic curves. Low internal and charge transfer resistances of the same catalyst in electrochemical impedance spectroscopy (EIS) analysis are attributable to its nonporous structure.

Keywords

Nonporous carbon Acid treatment Catalyst support Oxygen reduction reaction ACTIVATED CARBON PERFORMANCE NITROGEN CO ELECTROCATALYSTS NANOPARTICLES PHOSPHORUS NANOFIBERS ACID

WoS Categories

Multidisciplinary Sciences

Sustainable Development Goals

Affordable and Clean Energy

Citation

Journal: GAZI UNIVERSITY JOURNAL OF SCIENCE
Year: 2023
Volume: 36
Issue: 4
Pages: 1463-1478
ISSN: 2147-1762
DOI: 10.35378/gujs.1054803
WoS UID: WOS:001117763800004

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