The ability to precisely engineer advanced catalysts for the oxygen reduction reaction (ORR) and glycerol oxidation reaction (GOR) is crucial for the deployment of fuel cells (FCs) and electrolyzers. In this work, we used an atomic layer deposition (ALD) process to prepare highly dispersed palladium nanoparticles (PdNPs) on electro‐activated carbon felt electrodes. The prepared PdNPs were well dispersed and presented diameters of 4–6 nm, corresponding to a mass loading of 96 μg_Pd cm⁻² or 0.9 wt.%. For the GOR, the as‐synthesized nanocatalysts outperformed the commercial Pd/C (20 wt.%) reference by an order of magnitude. The bare electrode also displays distinguished kinetics towards the ORR. The enhanced performance is explained by the good palladium‐carbon interaction and the reduced aggregation and/or detachment of PdNPs. The results uncovered herein provide new strategic routes for the development of advanced electrodes for applications in electrochemical energy conversion.

中文翻译：

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通过原子层沉积制备的活化碳负载钯催化剂提高了催化甘油的氧化活性

精确设计用于氧还原反应（ORR）和甘油氧化反应（GOR）的先进催化剂的能力对于部署燃料电池（FC）和电解槽至关重要。在这项工作中，我们使用原子层沉积（ALD）工艺在电活化碳毡电极上制备高度分散的钯纳米粒子（PdNP）。制备的PdNP分散良好，直径为4–6 nm，对应于_96μgPd  cm ^-2的质量负载或0.9重量％。对于GOR，合成后的纳米催化剂的性能优于商品Pd / C（20 wt。％）参考值一个数量级。裸电极还显示出对ORR的出色动力学。钯-碳良好的相互作用以及PdNP的聚集和/或分离减少，可以解释性能的提高。本文揭示的结果为开发用于电化学能量转换的高级电极提供了新的战略途径。