Activity of Platinum-Based Cathode Electrocatalysts in Oxygen Redaction for Proton-Exchange Membrane Fuel Cells: Influence of the Ionomer Content

IF 3.1 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Inorganics Pub Date : 2024-01-02 DOI:10.3390/inorganics12010023

A. Alekseenko, S. Belenov, Dmitriy Mauer, E. Moguchikh, Irina Falina, Julia Bayan, I. Pankov, Danil Alekseenko, V. Guterman

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Abstract

Studying the ORR activity of platinum-based electrocatalysts is an urgent task in the development of materials for proton-exchange membrane fuel cells. The catalytic ink composition and the formation technique of a thin layer at the RDE play a significant role in studying ORR activity. The use of a polymer ionomer in the catalytic ink provides viscosity as well as proton conductivity. Nafion is widely used as an ionomer for research both at the RDE and in the MEA. The search for ionomers is a priority task in the development of the MEA components to replace Nafion. The study also considers the possibility of using the LF4-SK polymer as an alternative ionomer. The comparative results on the composition and techniques of applying the catalytic layer using LF4-SK and Nafion ionomers are presented, and the influence of the catalytic ink composition on the electrochemical characteristics of commercial platinum–carbon catalysts and a highly efficient platinum catalyst based on an N-doped carbon support is assessed.

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铂基阴极电催化剂在质子交换膜燃料电池氧还原反应中的活性：离子聚合物含量的影响

研究铂基电催化剂的 ORR 活性是开发质子交换膜燃料电池材料的一项紧迫任务。催化墨水的成分和 RDE 薄层的形成技术在研究 ORR 活性方面发挥着重要作用。在催化墨水中使用聚合物离聚体不仅能提供粘度，还能提供质子传导性。在 RDE 和 MEA 的研究中，Nafion 被广泛用作离子体。寻找离子体是开发 MEA 组件以取代 Nafion 的首要任务。本研究还考虑了使用 LF4-SK 聚合物作为替代离聚物的可能性。研究介绍了使用 LF4-SK 和 Nafion 离子聚合物涂敷催化层的成分和技术的比较结果，并评估了催化油墨成分对商用铂碳催化剂和基于掺杂 N 的碳载体的高效铂催化剂的电化学特性的影响。

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来源期刊

Inorganics Chemistry-Inorganic Chemistry

CiteScore

2.80

自引率

10.30%

发文量

193

审稿时长

6 weeks

期刊介绍： Inorganics is an open access journal that covers all aspects of inorganic chemistry research. Topics include but are not limited to: synthesis and characterization of inorganic compounds, complexes and materials structure and bonding in inorganic molecular and solid state compounds spectroscopic, magnetic, physical and chemical properties of inorganic compounds chemical reactivity, physical properties and applications of inorganic compounds and materials mechanisms of inorganic reactions organometallic compounds inorganic cluster chemistry heterogenous and homogeneous catalytic reactions promoted by inorganic compounds thermodynamics and kinetics of significant new and known inorganic compounds supramolecular systems and coordination polymers bio-inorganic chemistry and applications of inorganic compounds in biological systems and medicine environmental and sustainable energy applications of inorganic compounds and materials MD