碳载体对生物醇燃料电池pt基阳极电化学性能的影响

IF 2.8 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology Pub Date : 2025-03-04 DOI:10.1002/jctb.7841

Xiaoyan Qing, Zhongda Liu, Christos Chatzilias, Alexandros K. Bikogiannakis, Georgios Kyriakou, Pedro Fardim, Alexandros Katsaounis, Eftychia Martino

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引用次数: 0

摘要

直接酒精燃料电池（DAFCs）是一种很有前途的能量转换装置，但其广泛应用受到酒精氧化动力学缓慢、催化剂中毒和pt基材料成本高的限制。在本研究中，我们研究了不同的碳载体，特别是石墨烯纳米片（GNPs）和炭黑（Vulcan XC-72）对pt基阳极电化学性能的影响。此外，我们研究了三元PtRuSn催化剂，其中Sn的加入旨在提高催化性能，同时通过部分取代Ru可能降低成本。结果采用湿浸渍法合成了催化剂，并利用多种分析技术对催化剂的结构和电子性能进行了全面表征。与支撑在Vulcan XC-72上的催化剂相比，支撑在GNPs上的催化剂具有更小的金属颗粒尺寸和更高的催化活性。电化学分析（CO汽提法、循环伏安法和计时安培法）表明，gnp负载的催化剂在醇氧化过程中表现出更低的起始电位、更高的电化学活性表面积和更高的电流密度。值得注意的是，PtRuSn(5:4:1)/GNPs催化剂对乙醇和甘油的氧化活性最高，这突出了GNPs在提高稳定性和催化性能方面的作用。综上所述，GNPs可以作为DAFCs阳极催化剂的高效载体，增强分散性和稳定性。三元PtRuSn催化剂的使用有望改善酒精氧化，同时提供更平衡的性能和材料成本的方法。这些见解有助于开发更高效、经济可行的燃料电池技术。©2025作者。化学技术与生物技术杂志，John Wiley &出版；代表化学工业学会（SCI）的儿子有限公司。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Effect of carbon support on the electrochemical performance of Pt-based anodes for bio-alcohol fuel cells

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Effect of carbon support on the electrochemical performance of Pt-based anodes for bio-alcohol fuel cells

BACKGROUND

Direct alcohol fuel cells (DAFCs) are promising energy conversion devices, but their broader application is limited by slow kinetics of alcohol oxidation, catalyst poisoning, and high cost of Pt-based materials. In the present study we investigate the impact of different carbon supports, specifically graphene nanoplatelets (GNPs) and carbon black (Vulcan XC-72), on the electrochemical performance of Pt-based anodes. Additionally, we investigate ternary PtRuSn catalysts, where the incorporation of Sn is intended to enhance catalytic performance while potentially reducing costs through the partial substitution of Ru.

RESULTS

Catalysts were synthesized using the wet impregnation method, and their structural and electronic properties were thoroughly characterized using a variety of analytical techniques. Catalysts supported on GNPs exhibited smaller metal particle sizes and enhanced catalytic activity compared to those supported on Vulcan XC-72. Electrochemical analysis (CO stripping, cyclic voltammetry, and chronoamperometry) revealed that the GNP-supported catalysts demonstrated lower onset potential, higher electrochemical active surface area, and higher current densities during alcohol oxidation. Notably, the PtRuSn(5:4:1)/GNPs catalyst exhibited the highest activity for ethanol and glycerol oxidation, highlighting the role of GNPs in enhancing both the stability and catalytic performance.

CONCLUSION

Overall, the findings indicate that GNPs can function as a highly effective support for anode catalysts in DAFCs, enhancing dispersion and stability. The use of ternary PtRuSn catalysts appears promising for improving alcohol oxidation while offering a more balanced approach to performance and material cost. These insights could contribute to the development of more efficient and economically viable fuel cell technologies. © 2025 The Author(s). Journal of Chemical Technology and Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).

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来源期刊

Journal of chemical technology and biotechnology 工程技术-工程：化工

CiteScore

7.00

自引率

5.90%

发文量

268

审稿时长

1.7 months

期刊介绍： Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.