甲酸燃料电池的新型催化剂

Q3 Engineering

Serbian Journal of Electrical Engineering Pub Date : 2022-01-01 DOI:10.2298/sjee2203387s

Milica Spasojevic-Savkovic, Zoran Kićanović, P. Spasojevic, Milentije Luković

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引用次数: 0

摘要

低电位下沉积的铊原子在甲酸对铂钌合金的电氧化过程中表现出催化作用。在与附原子Tl覆盖度最佳的Pt/Ru电极上，HCOOH的氧化电位比在Pt/Ru电极上高出近180 mV。修饰Pt/Ru电极的催化作用可能是由位于Pt原子上的Tl配原子与相邻Ru原子的OH原子相互作用引起的。这些相互作用稳定了钌- oh物质，并允许它们在比Pt/Ru电极更负的电位下形成。Ru-OH可以氧化结合牢固的中间产物COad，从而释放出Pt原子，用于氧化后续的HCOOH分子。催化作用可能是由第三体效应引起的。

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New catalysts for formic acid fuel cells

Thallium adatoms deposited at under-potentials have shown the catalytic effect during the electrooxidation of formic acid on platinum ruthenium alloys. At Pt/Ru with an optimal coverage degree with adatoms Tl, HCOOH is oxidized at nearly 180 mV more negative potential than at Pt/Ru electrodes. The catalytic effect of modified Pt/Ru electrodes is plausibly caused by interaction of the Tl adatoms, located at Pt atoms with OH species of adjacent Ru atoms. These interactions stabilize Ru-OH species and allows for their formation at more negative potentials than at the Pt/Ru electrodes. The Ru-OH species oxidize firmly bound intermediates COad and thus release the Pt atoms for the oxidation of subsequent HCOOH molecules. The catalytic effect is probably caused by the third-body effect.

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来源期刊

Serbian Journal of Electrical Engineering Energy-Energy Engineering and Power Technology

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

25 weeks

期刊介绍： The main aims of the Journal are to publish peer review papers giving results of the fundamental and applied research in the field of electrical engineering. The Journal covers a wide scope of problems in the following scientific fields: Applied and Theoretical Electromagnetics, Instrumentation and Measurement, Power Engineering, Power Systems, Electrical Machines, Electrical Drives, Electronics, Telecommunications, Computer Engineering, Automatic Control and Systems, Mechatronics, Electrical Materials, Information Technologies, Engineering Mathematics, etc.