Ternary PdNi-based nanocrystals supported on nitrogen-doped reduced graphene oxide as highly active electrocatalysts for the oxygen reduction reaction. (1st May 2017)

• Record Type: Journal Article
• Authors: Sun, Lingna; Liao, Biyan; Ren, Xiangzhong; Li, Yongliang; Zhang, Peixin; Deng, Libo; Gao, Yuan
• Is Part Of: Electrochimica acta. Volume 235(2017)
• Page Start: 543
• Page End: 552
• Publication Date: 2017-05-01
• Subjects: Oxygen reduction reaction -- Trimetallic -- Electrocatalyst -- Nitrogen-doped graphene; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2017.03.159
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: Ternary PdNiM (M = Cu or Sn) alloys are supported on nitrogen-doped graphene (NG) by a simple chemical reduction method. PdNiM (M = Cu or Sn) are used as nanocatalysts for the oxygen reduction reaction (ORR) in an alkaline electrolyte. The nanocatalysts are characterized by scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The physical properties demonstrate that PdNiM (M = Cu or Sn) nanoparticles are highly alloyed and well dispersed on NG. PdNiM (M = Cu or Sn) electrocatalysts exhibit high ORR activity and stability, which are better than 20% commercial Pd black and close to 20% commercial Pt/C. These results indicate that the addition of Sn or Cu into a PdNi-based catalyst not only reduces the level of Pd but also greatly improves the catalytic activity.