振荡电位和供氧条件下 PEM 燃料电池阴极催化剂层的性能

IF 4.7 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications Pub Date : 2023-12-28 DOI:10.1016/j.elecom.2023.107655

Andrei Kulikovsky

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引用次数: 0

摘要

解决了 PEM 燃料电池阴极催化剂层在电位和氧浓度谐波扰动同时作用下的阻抗模型。求解结果表明，在氧浓度扰动振幅增大的情况下，催化剂层阻抗显著降低。过电位和氧浓度的微小同相振荡导致形成了一个氧传输损耗可忽略不计的子层。作为一个理想的非极化电极，该子层极大地降低了系统阻抗。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Performance of a PEM fuel cell cathode catalyst layer under oscillating potential and oxygen supply

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Performance of a PEM fuel cell cathode catalyst layer under oscillating potential and oxygen supply

A model for impedance of a PEM fuel cell cathode catalyst layer under simultaneous application of potential and oxygen concentration harmonic perturbations is solved. The solution demonstrates strong lowering of the layer impedance under increase in the amplitude of oxygen concentration perturbation. Small in–phase oscillations of the overpotential and oxygen concentration lead to formation of a sub–layer with negligible oxygen transport loss. Working as an ideal non–polarizable electrode, this sub–layer dramatically reduces the system impedance.

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来源期刊

Electrochemistry Communications 工程技术-电化学

CiteScore

8.50

自引率

3.70%

发文量

160

审稿时长

1.2 months

期刊介绍： Electrochemistry Communications is an open access journal providing fast dissemination of short communications, full communications and mini reviews covering the whole field of electrochemistry which merit urgent publication. Short communications are limited to a maximum of 20,000 characters (including spaces) while full communications and mini reviews are limited to 25,000 characters (including spaces). Supplementary information is permitted for full communications and mini reviews but not for short communications. We aim to be the fastest journal in electrochemistry for these types of papers.