催化学报 ›› 2015, Vol. 36 ›› Issue (11): 1799-1810.DOI: 10.1016/S1872-2067(15)60971-8

• 综述 • 上一篇    下一篇

石墨烯衍生物负载的纳米催化剂用于氧还原反应

Ilkeun Leea, Ji Bong Joob, Mohammadreza Shokouhimehrc   

  1. a 加利福尼亚大学河滨分校化学系, 美国;
    b 韩国能源研究所低碳过程实验室, 大田305-343, 韩国;
    c 国立首尔大学工程学院, 化工和生物工程系, 首尔151-741, 韩国
  • 收稿日期:2015-06-30 修回日期:2015-09-09 出版日期:2015-11-02 发布日期:2015-11-02
  • 通讯作者: Ilkeun Lee. 电子信箱:ilkeun@ucr.edu;Ji Bong Joo. 电子信箱:jbjoo@kier.re.kr;Mohammadreza Shokouhimehr. 电子信箱:mrsh2@snu.ac.kr

Graphene derivatives supported nanocatalysts for oxygen reduction reaction

Ilkeun Leea, Ji Bong Joob, Mohammadreza Shokouhimehrc   

  1. a Department of Chemistry, University of California, Riverside, CA, 92521, USA;
    b Low Carbon Process Lab, Korea Institute of Energy Research, Deajeon 305-343, Korea;
    c School of Chemical and Biological Engineering, College of Engineering, Seoul National University, Seoul 151-741, Korea
  • Received:2015-06-30 Revised:2015-09-09 Online:2015-11-02 Published:2015-11-02
  • Contact: Ilkeun Lee. 电子信箱:ilkeun@ucr.edu;Ji Bong Joo. 电子信箱:jbjoo@kier.re.kr;Mohammadreza Shokouhimehr. 电子信箱:mrsh2@snu.ac.kr

摘要:

综述了用于燃料电池中氧还原反应(ORR)的石墨烯衍生物负载的各种纳米催化剂的最新进展. 介绍了用于表征石墨烯基电催化剂的常规电化学技术以及石墨烯基电催化剂最新的研究进展. 负载于还原氧化石墨烯(RGO)上的Pt催化剂的电化学活性和稳定性均得到显著提高. 其它贵金属催化剂, 如Pd, Au和Ag也表现出较高的催化活性. 当以RGO或少层石墨烯为载体时, Pd催化剂的稳定性提高. 讨论了氧化石墨烯负载Au或Ag催化剂的合成方法. 另外, 以N4螯合络合物形式存在的非贵过渡金属可降低氧的电化学性能. Fe和Co是可替代的廉价ORR催化剂. 在大多数情况下, 这些催化剂稳定性和耐受性的问题均可得到解决, 但其整体性能还很难超越Pt/C催化剂.

关键词: 石墨烯, 氧还原反应, 电催化剂, 纳米催化剂

Abstract:

Very recent progress on the graphene derivatives supported variable nanocatalysts for oxygen reduction reaction (ORR) in fuel cell is reviewed. First, common electrochemical techniques to characterize graphene-based electrocatalysts are mentioned. Second, recent updates on graphene-derived electrocatalysts are introduced. In this part, both electrochemical activity and stability of Pt catalysts can be improved when they are supported by reduced graphene oxide (RGO). Other noble-metal catalysts including Pd, Au, and Ag showing comparable performance have been investigated. The stability of Pd catalyst is enhanced by RGO or few-layered graphene support. Synthetic approaches for Au or Ag catalysts supported on graphene oxide are discussed. In addition, non-noble transition metals in N4-chelate complexes can reduce oxygen electrochemically. Fe and Co are cheap alternative catalysts for ORR. In most cases, the stability and tolerance issues are overcome well, but their overall performances don't seem to surpass Pt/C catalyst yet.

Key words: Graphene, Oxygen reduction reaction, Electrocatalyst, Nanocatalyst