Pd/TiO2 decorated carbon fibers as an efficient anode catalyst for methanol electro-oxidation

IF 2.6 4区工程技术 Q3 ELECTROCHEMISTRY

Fuel Cells Pub Date : 2024-05-11 DOI:10.1002/fuce.202300113

Lei Yin, Chenxing Wang, Yusong Liu, Xiaolei Su, Yanyan Song, Yi Liu

引用次数: 0

Abstract

In this study, Pd/TiO₂ decorated carbon nanofibers (Pd/TiO₂@CNFs) and Pd@CNFs were prepared by the impregnation method for application in direct methanol fuel cells (DMFCs). Pd and TiO₂ particles were supported on the surface of carbon fibers. Noticeably, When the mass fraction of PdCl₂ added is 4%, the Pd@CNFs catalyst (Pd-4@CNFs) showed higher electrocatalytic activity and stability, which were about 28.4 and 13.2 times higher than those of commercial Pd/C catalyst, respectively. On the basis of Pd-4@CNFs catalyst, TiO₂ with a mass fraction of 10% was added to produce Pd/TiO₂@CNFs catalyst (Pd-4/TiO₂-10@CNFs). The electrocatalytic activity of Pd-4/TiO₂-10@CNFs increased to 3,850.4 A·g⁻¹, which was 31.9 times higher than that of commercial Pd/C catalysts. These results demonstrated that the novel Pd/TiO₂@CNFs catalyst is expected to be an efficient and durable catalyst for DMFC.

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作为甲醇电氧化高效阳极催化剂的 Pd/TiO2 装饰碳纤维

本研究采用浸渍法制备了 Pd/TiO2 装饰碳纳米纤维（Pd/TiO2@CNFs）和 Pd@CNFs，并将其应用于直接甲醇燃料电池（DMFCs）。Pd 和 TiO2 颗粒被支撑在碳纤维表面。值得注意的是，当 PdCl2 的质量分数为 4% 时，Pd@CNFs 催化剂（Pd-4@CNFs）表现出更高的电催化活性和稳定性，分别是商用 Pd/C 催化剂的 28.4 倍和 13.2 倍。在 Pd-4@CNFs 催化剂的基础上，加入质量分数为 10%的 TiO2，制得 Pd/TiO2@CNFs 催化剂（Pd-4/TiO2-10@CNFs）。Pd-4/TiO2-10@CNFs 的电催化活性提高到 3,850.4 A-g-1，是商用 Pd/C 催化剂的 31.9 倍。这些结果表明，新型 Pd/TiO2@CNFs 催化剂有望成为 DMFC 高效、持久的催化剂。

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

Fuel Cells 工程技术-电化学

CiteScore

5.80

自引率

3.60%

发文量

审稿时长

3.7 months

期刊介绍： This journal is only available online from 2011 onwards. Fuel Cells — From Fundamentals to Systems publishes on all aspects of fuel cells, ranging from their molecular basis to their applications in systems such as power plants, road vehicles and power sources in portables. Fuel Cells is a platform for scientific exchange in a diverse interdisciplinary field. All related work in -chemistry- materials science- physics- chemical engineering- electrical engineering- mechanical engineering- is included. Fuel Cells—From Fundamentals to Systems has an International Editorial Board and Editorial Advisory Board, with each Editor being a renowned expert representing a key discipline in the field from either a distinguished academic institution or one of the globally leading companies. Fuel Cells—From Fundamentals to Systems is designed to meet the needs of scientists and engineers who are actively working in the field. Until now, information on materials, stack technology and system approaches has been dispersed over a number of traditional scientific journals dedicated to classical disciplines such as electrochemistry, materials science or power technology. Fuel Cells—From Fundamentals to Systems concentrates on the publication of peer-reviewed original research papers and reviews.