Influence of the Carbon Support on the Structural–Morphological Parameters and Electrochemical Properties of Platinum-Containing Catalysts for Fuel-Cell Cathode with a Proton-Exchange Membrane

IF 0.8 Q3 Engineering

Nanotechnologies in Russia Pub Date : 2024-03-23 DOI:10.1134/S2635167624600093

Yu. A. Bayan, K. O. Paperzh, I. V. Pankov, A. S. Pavlets, E. A. Moguchikh, A. A. Alekseenko

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Abstract

Finding the optimal substrate for electrocatalysts used as electrodes in fuel cells is an urgent task for the development of hydrogen energetics. The composition and the morphological and electrochemical properties of platinum–carbon catalysts synthesized according to a common method on various carbon supports (Vulcan XC-72, Vulcan XC-72R, Ketjenblack EC-300J, Ketjenblack EC-600JD, and modified Ketjenblack EC-600JD) and of a JM-20 commercial electrocatalyst are analyzed comparatively. It is found that highly dispersed supports (from 800 m²/g) make it possible to increase the catalytic activity of Pt/C materials in the electroreduction reaction of oxygen by two times compared to those with a specific surface area of less than 250 m²/g. The preliminary treatment of a carbon support with melamine increases the stability of catalysts based on it by 40%. A platinum-carbon catalyst with a 1.6-times-higher electrochemically active surface area and 1.7-times-higher mass activity in the reaction of oxygen electroreduction compared to a commercial analogue is obtained.

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碳载体对质子交换膜燃料电池阴极含铂催化剂的结构形态参数和电化学性质的影响

为燃料电池中用作电极的电催化剂寻找最佳基质是氢能源开发的一项紧迫任务。本文比较分析了在各种碳载体（Vulcan XC-72、Vulcan XC-72R、Ketjenblack EC-300J、Ketjenblack EC-600JD 和改性 Ketjenblack EC-600JD）上用普通方法合成的铂碳催化剂以及 JM-20 商用电催化剂的组成、形态和电化学特性。研究发现，与比表面积小于 250 m2/g 的铂/碳材料相比，高度分散的支持物（800 m2/g 以上）可将铂/碳材料在氧气电还原反应中的催化活性提高两倍。用三聚氰胺对碳载体进行初步处理，可使以碳载体为基础的催化剂的稳定性提高 40%。一种铂碳催化剂在氧气电还原反应中的电化学活性表面积和质量活性分别是商用同类催化剂的 1.6 倍和 1.7 倍。

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来源期刊

Nanotechnologies in Russia NANOSCIENCE & NANOTECHNOLOGY-

CiteScore

1.20

自引率

0.00%

发文量

期刊介绍： Nanobiotechnology Reports publishes interdisciplinary research articles on fundamental aspects of the structure and properties of nanoscale objects and nanomaterials, polymeric and bioorganic molecules, and supramolecular and biohybrid complexes, as well as articles that discuss technologies for their preparation and processing, and practical implementation of products, devices, and nature-like systems based on them. The journal publishes original articles and reviews that meet the highest scientific quality standards in the following areas of science and technology studies: self-organizing structures and nanoassemblies; nanostructures, including nanotubes; functional and structural nanomaterials; polymeric, bioorganic, and hybrid nanomaterials; devices and products based on nanomaterials and nanotechnology; nanobiology and genetics, and omics technologies; nanobiomedicine and nanopharmaceutics; nanoelectronics and neuromorphic computing systems; neurocognitive systems and technologies; nanophotonics; natural science methods in a study of cultural heritage items; metrology, standardization, and monitoring in nanotechnology.