A single-step route for large-scale synthesis of core-shell palladium@platinum dendritic nanocrystals/reduced graphene oxide with enhanced electrocatalytic properties

作者：Liu, Qi; Xu, Yan-Ru; Wang, Ai-Jun; Feng, Jiu-Ju^*

来源：Journal of Power Sources, 2016, 302: 394-401.

DOI：10.1016/j.jpowsour.2015.10.079

• Core-shell dendritic nanocrystals
• Reduced graphene oxide
• Poly(ethylene oxide)
• Methanol oxidation reaction
• Ethanol oxidation reaction

In this report, a facile, seed-less and single-step method is developed for large-scale synthesis of core-shell Pd@Pt dendritic nanocrystals anchored on reduced graphene oxide (Pd@Pt DNC/rGO) under mild conditions. Poly(ethylene oxide) is employed as a structure-directing and stabilizing agent. Compared with commercial Pt/C (20 wt%) and Pd/C (20 wt%) catalysts, the as-obtained nanocomposite has large electrochemically active surface area (114.15 m(2)g(metal)(-1)), and shows superior catalytic activity and stability With the mass activities of 1210.0 and 1128.5 mA mg(metal)(-1) for methanol and ethanol oxidation, respectively. The improved catalytic activity is mainly the consequence of the synergistic effects between Pd and Pt of the dendritic structures, as well as rGO as a support.

• 出版日期2016-1-20
• 单位河南师范大学; 浙江师范大学