Organic fuels oxidation: A common misunderstanding related to non-noble fuel cell catalysts

IF 7.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry Pub Date : 2024-07-02 DOI:10.1016/j.coelec.2024.101567

引用次数: 0

Abstract

This opinion addresses a basic impossibility to use Ni-containing and similar mediator electrocatalysts for fuel cell anodes if the fuel is organic, and air (or oxygen) is the oxidant. The reason is that oxidation onset potential is always higher than O₂/H₂O equilibrium potential. These anodes can operate in fuel cells with peroxide, but the voltages reported for direct urea peroxide fuel cells demonstrate contradiction with urea oxidation onset potentials. Ni-containing anodes for “boosting” in water electrolysis and in electrochemical reforming present more heathy research branch.

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有机燃料氧化：与非贵族燃料电池催化剂有关的常见误解

如果燃料是有机物，而空气（或氧气）是氧化剂，则不可能将含镍和类似介质电催化剂用于燃料电池阳极。原因是氧化起始电位总是高于 O2/H2O 平衡电位。这些阳极可以在含有过氧化物的燃料电池中工作，但报告的直接过氧化尿素燃料电池的电压与尿素氧化起始电位存在矛盾。在水电解和电化学重整中用于 "增压 "的含镍阳极是更热门的研究领域。

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

Current Opinion in Electrochemistry Chemistry-Analytical Chemistry

CiteScore

14.00

自引率

5.90%

发文量

272

审稿时长

73 days

期刊介绍： The development of the Current Opinion journals stemmed from the acknowledgment of the growing challenge for specialists to stay abreast of the expanding volume of information within their field. In Current Opinion in Electrochemistry, they help the reader by providing in a systematic manner: 1.The views of experts on current advances in electrochemistry in a clear and readable form. 2.Evaluations of the most interesting papers, annotated by experts, from the great wealth of original publications. In the realm of electrochemistry, the subject is divided into 12 themed sections, with each section undergoing an annual review cycle: • Bioelectrochemistry • Electrocatalysis • Electrochemical Materials and Engineering • Energy Storage: Batteries and Supercapacitors • Energy Transformation • Environmental Electrochemistry • Fundamental & Theoretical Electrochemistry • Innovative Methods in Electrochemistry • Organic & Molecular Electrochemistry • Physical & Nano-Electrochemistry • Sensors & Bio-sensors •