Developing highly active Pd-based nanocatalysts with a well-organized structure is desired for direct alcohol fuel cell commercialization. In this study, room temperature seed mediated growth strategy has been successfully developed to prepare ternary Pd@Cd_x-Ag_y core-shell as advanced novel non-Pt anode nanocatalysts for ethanol oxidation reaction EOR in alkaline electrolyte. The introduction of oxophilic Cd and Ag metals into Pd nanocatalysts can reduce the adsorption energy of OH_ads on the Pd@Cd_x-Ag_y nanocatalysts and inhibit the CO_ads on the Pd surface. Morphological characterization demonstrates that the as-synthesized Pd@Cd_x-Ag_y nanocatalysts are well-organized core-shell nanostructure with Pd NPs as the core and Cd-Ag alloy as the shell. Moreover, electrochemical results indicate that the Pd@Cd₁-Ag₁ core-shell catalyst exhibit a remarkable electrochemical activity ($2995.76\mathrm{mA}{\mathrm{mg}}_{\mathrm{Pd}}^{-1}$), excellent CO tolerance and long-term durability compared to those of Pd@Cd $(1285.9\mathrm{mA}{\mathrm{mg}}_{\mathrm{Pd}}^{-1}$), Pd@Ag ($2423.52\mathrm{mA}{\mathrm{mg}}_{\mathrm{Pd}}^{-1}$) and commercial Pd/C (JM) ($477.4\mathrm{mA}{\mathrm{mg}}_{\mathrm{Pd}}^{-1}$) nanocatalysts. The excellent catalytic activity and stability of Pd@Cd₁-Ag₁ nanocatalyst can be associated to their huge electrochemical active surface area, positive influence of Cd-Ag NPs on Pd NPs and the unique well-organized core-shell nanostructure. These results suggested that the as-synthesized Pd@Cd_x-Ag_y core-shell could serve as advanced catalysts towards alkaline DEFCs.

对于酒精燃料电池的直接商业化，期望开发具有良好组织的结构的高活性基于Pd的纳米催化剂。在这项研究中，成功​​地开发了室温种子介导的生长策略，以制备三元Pd @ Cd _x -Ag _y核壳，作为先进的新型非Pt阳极纳米催化剂，用于碱性电解质中乙醇氧化反应EOR。引入亲氧性镉和银金属的成的Pd纳米催化剂可以减少OH的吸附能_广告上的Pd @镉_X -Ag _ÿ纳米催化剂并抑制CO_的广告的钯表面上。形态表征表明合成后的Pd @ Cd _x -Ag _y纳米催化剂是组织良好的核-壳纳米结构，以Pd NPs为核，Cd-Ag合金为壳。此外，电化学结果表明，Pd @ Cd ₁ -Ag ₁核壳催化剂表现出显着的电化学活性（$2995.76\mathrm{嘛}{\mathrm{毫克}}_{\mathrm{钯}}^{-\mathrm{1个}}$），与Pd @ Cd相比具有出色的CO耐受性和长期耐用性 $（1285.9\mathrm{嘛}{\mathrm{毫克}}_{\mathrm{钯}}^{-\mathrm{1个}}$），Pd @ Ag（$2423.52\mathrm{嘛}{\mathrm{毫克}}_{\mathrm{钯}}^{-\mathrm{1个}}$）和商业Pd / C（JM）（$477.4\mathrm{嘛}{\mathrm{毫克}}_{\mathrm{钯}}^{-\mathrm{1个}}$）纳米催化剂。Pd @ Cd ₁ -Ag ₁纳米催化剂优异的催化活性和稳定性与它们巨大的电化学活性表面积，Cd-Ag NPs对Pd NPs的积极影响以及独特的组织良好的核-壳纳米结构有关。这些结果表明，所合成的Pd @ Ç d _X -Ag _ý芯-壳可以作为向碱性DEFCs高级催化剂。