Facile synthesis of granular polypyrrole supported PdSn alloy nanoparticles for efficient electrocatalytic oxidation of alcohols

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-06-19 DOI:10.1016/j.ijhydene.2025.150025

Yakai Hao , Huan Zhang , Huijin Chen , Ruirui Yue , Peipei Liu , Jingkun Xu

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Abstract

Developing of highly active and durable catalysts is essential for advancing fuel cell technology and addressing the depletion of fossil fuels. In this study, a polypyrrole-supported palladium-tin alloy nanoparticles (PdSn/PPy) was synthesized at room temperature using a one-step interfacial polymerization method that combines the organic and aqueous phases without heating and stirring. The Pd₄Sn₆/PPy catalyst exhibited exceptional electrocatalytic activity for ethylene glycol oxidation (EGOR) and ethanol oxidation (EOR) in alkaline media, achieving peak current densities of 7445.1 and 3823.8 mA mg_Pd⁻¹, respectively, which are 12.8 and 17.5 times higher than those of commercial Pd/C. The enhanced performance originates from the electronic modulation of Pd's d-band center through Sn alloying, together with the synergistic interaction between the metal nanoparticles and the PPy support. This study provides a promising approach to optimizing alkaline direct alcohol fuel cells (ADAFCs) anode catalysts, achieving both low Pd loading and superior catalytic efficiency.

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聚吡咯负载PdSn合金纳米颗粒高效电催化氧化醇的简易合成

开发高活性和耐用的催化剂是推进燃料电池技术和解决化石燃料枯竭问题的必要条件。在本研究中，在室温下，采用一步界面聚合方法合成了聚吡咯负载的钯锡合金纳米颗粒（PdSn/PPy），该方法将有机相和水相结合，无需加热和搅拌。Pd4Sn6/PPy催化剂在碱性介质中对乙二醇氧化（EGOR）和乙醇氧化（EOR）表现出优异的电催化活性，峰值电流密度分别为7445.1 mA mgPd−1和3823.8 mA mgPd−1，分别是商用Pd/C的12.8和17.5倍。这种增强的性能源于锡合金对钯d带中心的电子调制，以及金属纳米颗粒与PPy载体之间的协同作用。该研究为优化碱性直接醇燃料电池（ADAFCs）阳极催化剂提供了一种很有前途的方法，可以实现低Pd负载和优异的催化效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.