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Nano Research

, Volume 9, Issue 11, pp 3494–3503 | Cite as

Hollow PtNi alloy nanospheres with enhanced activity and methanol tolerance for the oxygen reduction reaction

  • Huimin Liu
  • Xinyu Liu
  • Yumei Li
  • Yufeng Jia
  • Yawen Tang
  • Yu Chen
Research Article

Abstract

The development of active and methanol-tolerant cathode electrocatalysts for the oxygen reduction reaction (ORR) is extremely important for accelerating the commercial viability of direct methanol fuel cells (DMFCs). In this work, we present an efficient and template-free route for facile synthesis of cyanide (CN−)-functionalized PtNi hollow nanospheres (PtNi@CN HNSs) with a high alloying degree using a simple cyanogel reduction method at room temperature. The physical and electrocatalytic properties of the PtNi@CN HNSs were investigated by various physical and electrochemical techniques. The PtNi@CN HNSs exhibited significantly enhanced electrocatalytic activity, durability, and particular methanol tolerance for the ORR as compared to commercial Pt black, and thus they are promising cathode electrocatalysts for DMFCs.

Keywords

cyanogel PtNi alloy chemical functionalization oxygen reduction reaction methanol tolerance 

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Hollow PtNi alloy nanospheres with enhanced activity and methanol tolerance for the oxygen reduction reaction

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© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Key Laboratory of Macromolecular Science of Shaanxi Province, School of Materials Science and EngineeringShaanxi Normal UniversityXi’anChina
  2. 2.Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials ScienceNanjing Normal UniversityNanjingChina

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