• 文献标题:   Engineering of N,P,S-Triple doped 3-dimensional graphene architecture: Catalyst-support for "surface-clean" Pd nanoparticles to boost the electrocatalysis of ethanol oxidation reaction
  • 文献类型:   Article
  • 作  者:   KARAMAN C
  • 作者关键词:   ethanol oxidation reaction, fuel cell, heteroatom doping, hybrid electrocatalyst, pd nanoparticle, threedimensional graphene
  • 出版物名称:   INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • ISSN:   0360-3199 EI 1879-3487
  • 通讯作者地址:  
  • 被引频次:   4
  • DOI:   10.1016/j.ijhydene.2022.02.093 EA JAN 2023
  • 出版年:   2023

▎ 摘  要

The engineering of robust electrocatalysts for the ethanol oxidation reaction (EOR) with cost-natural, superior electrocatalytic activity, and stability, is crucial for the scaled-up applications of direct ethanol fuel cells. Herein, a facile bottom-up hydrothermal strategy has been implemented to synthesize N,P,S triple-doped 3-dimensional (3D) graphene ar-chitectures (N,P,S-3DG) with interconnected, hierarchical porous structure, followed by Pd nanoparticles were uniformly decorated onto the N,P,S-3DG via solvothermal approach. As fabricated hybrid nanocatalyst, labeled as Pd@N,P,S-3DG, is of charming physicochemical characteristics including large electrochemically active specific surface area, inter-connected hierarchical pore network, a satisfactory percentage of heteroatom dopants, uniform distribution of Pd nanoparticles, as well as superior electrocatalytic performance metrics such as high catalytic activity, long-term stability, and tolerance to poisoning. The characterizations have confirmed the strong electrostatic interaction between the Pd nanoparticles and carbonaceous support material, thereby leading to homogeneously anchoring Pd nanoparticles onto 3D architecture and forming of novel active sites as well as synergistically boosting the EOR catalytic activity. The Pd@N,P,S-3DG has offered an enlarged electrochemically active surface area (50.3 m(2) g(-1)), an enhanced catalytic current density of 1784 mA mg(-1)Pd, and outstanding long-term stability, thereby distinctly tran-scending those of commercial carbonaceous material-supported Pd catalysts. The work is of great importance since it may pave the way for the rational design of low-cost high-performance carbonaceous-based nano-electrocatalysts to be utilized in large-scale energy applications. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.