迈向多克量级高度均匀负载型金属纳米颗粒的连续生产及其在合成优异金属间化合物Pt合金氧还原反应电催化剂中的应用。
Toward the Continuous Production of Multigram Quantities of Highly Uniform Supported Metallic Nanoparticles and Their Application for Synthesis of Superior Intermetallic Pt-Alloy ORR Electrocatalysts.
作者信息
Pavko Luka, Gatalo Matija, Križan Gregor, Križan Janez, Ehelebe Konrad, Ruiz-Zepeda Francisco, Šala Martin, Dražić Goran, Geuß Moritz, Kaiser Pascal, Bele Marjan, Kostelec Mitja, Đukić Tina, Van de Velde Nigel, Jerman Ivan, Cherevko Serhiy, Hodnik Nejc, Genorio Boštjan, Gaberšček Miran
机构信息
Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana, Slovenia.
Faculty of Chemistry and Chemical Technology, University of Ljubljana, 1001 Ljubljana, Slovenia.
出版信息
ACS Appl Energy Mater. 2021 Dec 27;4(12):13819-13829. doi: 10.1021/acsaem.1c02570. Epub 2021 Nov 23.
A fast and facile pulse combustion (PC) method that allows for the continuous production of multigram quantities of high-metal-loaded and highly uniform supported metallic nanoparticles (SMNPs) is presented. Namely, various metal on carbon (M/C) composites have been prepared by using only three feedstock components: water, metal-salt, and the supporting material. The present approach can be elegantly utilized also for numerous other applications in electrocatalysis, heterogeneous catalysis, and sensors. In this study, the PC-prepared M/C composites were used as metal precursors for the Pt NPs deposition using double passivation with the galvanic displacement method (DP method). Lastly, by using thin-film rotating disc electrode (TF-RDE) and gas-diffusion electrode (GDE) methodologies, we show that the synergistic effects of combining PC technology with the DP method enable production of superior intermetallic Pt-M electrocatalysts with an improved oxygen reduction reaction (ORR) performance when compared to a commercial Pt-Co electrocatalyst for proton exchange membrane fuel cells (PEMFCs) application.
本文介绍了一种快速简便的脉冲燃烧（PC）方法，该方法能够连续生产数克高金属负载且高度均匀的负载型金属纳米颗粒（SMNP）。具体而言，仅使用水、金属盐和载体材料这三种原料成分，就制备出了各种碳载金属（M/C）复合材料。本方法还可巧妙地应用于电催化、多相催化及传感器等众多其他领域。在本研究中，采用双钝化电置换法（DP法），将PC法制备的M/C复合材料用作铂纳米颗粒沉积的金属前驱体。最后，通过使用薄膜旋转圆盘电极（TF-RDE）和气体扩散电极（GDE）方法，我们表明，与用于质子交换膜燃料电池（PEMFC）的商业铂钴电催化剂相比，将PC技术与DP法相结合的协同效应能够制备出具有优异性能的金属间铂- M电催化剂，其氧还原反应（ORR）性能得到了改善。
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