A comparative study of hydrogen evolution on Pt/GC and Pt/GNPs in acid solution

被引：0
作者：
Rakocevic, Lazar [1 ]
Golubovic, Jelena [2 ]
Radovic, Dana Vasiljevic [3 ]
Rajic, Vladimir [1 ]
Strbac, Svetlana [2 ]
机构：
[1] Univ Belgrade, Lab Atom Phys, INS Vinca, Mike Alasa 12-14, Belgrade 11351, Serbia
[2] Univ Belgrade, Dept Electrochem, ICTM, Njegoseva 12, Belgrade 11000, Serbia
[3] Univ Belgrade, Dept Microelect Technol, ICTM, Njegoseva 12, Belgrade 11000, Serbia
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2024年 / 51卷
关键词：
Platinum; Glassy carbon; Graphene nanoplatelets; Hydrogen evolution reaction; Acid solution; PLATINUM NANOPARTICLES; EFFICIENT ELECTROCATALYST; SUPPORT MATERIALS; CARBON NANOTUBES; GRAPHENE; ELECTRODES; OXIDATION; NANOSPHERES; DEPOSITION; MECHANISM;
D O I：
暂无
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We present a comparative study of the electrocatalytic performance of catalysts obtained by electrochemical and spontaneous deposition of Pt on glassy carbon (GC) and graphene nanoplatelets (GNPs) supports. Pt/GC, with high Pt loading, obtained by electrochemical deposition of Pt, and Pt/GNPs, with low Pt loading, obtained by spontaneous deposition, show the highest activity for the hydrogen evolution reaction (HER) in acid solution. AFM images of Pt/GC reveal that the GC coverage by Pt nanoparticles is 87%, while SEM images of Pt/GNPs do not show the presence of Pt species due to their small amount. XPS analysis confirms that the amount of Pt is 48.1 wt% in Pt/GC and 4.6 wt% in Pt/GNPs. The HER activity of both catalysts is equally high, showing onset potentials close to 0.0V (vs. RHE). The Tafel slopes of 30 mV/dec for Pt/GC and 37 mV/dec for Pt/GNPs indicate different HER mechanisms. (c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1240 / 1254
页数：15
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