Engineering porosity into trimetallic PtPdNi nanospheres for enhanced electrocatalytic oxygen reduction activity

• 作者: Chunjie Li Hairong Xue Hongjie Yu Hongjing Wang Liang Wang Shuli Yin Xiaonian Li Yinghao Li You Xu
• 来源期刊: 绿色能源与环境：英文版
• 学科: 工学
• 关键词: Tri-metallic PtPdNi MESOPOROUS structures NANOSPHERES Oxygen reduction reaction ELECTROCATALYSTS
• 年，卷（期）: lsnyyhjywb_2018,（4）
• 页码范围: 352-359
• 页数: 8页
• 分类号: TM911.4

摘要

Platinum(Pt)-based multi-metallic nanostructures show great promise as electrocatalysts for the oxygen reduction reaction(ORR) in fuel cell cathodes. Herein, we report a simple, one-step surfactant-directed synthetic strategy to directly synthesize tri-metallic PtPdNi mesoporous nanospheres(PtPdNi MNs) in a high yield. The synthesis could be accomplished in aqueous solution at mild reaction temperature(40C)without needing any organic solvent, yielding well-dispersed PtPdNi MNs with uniform shape and narrow size distribution. Benefitting from their unique mesoporous and highly open structure and tri-metallic composition, the as-synthesized PtPdNi MNs demonstrate superior catalytic activity and stability for ORR in acidic solution in comparison with PtPdNi nanodendrites(PtPdNi NDs), PtPd MNs and commercial Pt/C catalyst. The present approach may open a reliable path to the design of advanced electrocatalysts with desired performance.