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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.
Recent advances in various nanocatalysts supported by graphene derivatives for oxygen reduction reaction (ORR) in fuel cells are reviewed.The conventional electrochemical techniques for the characterization of graphene-based electrocatalysts and the recent development of graphene-based electrocatalysts The electrochemical activity and stability of Pt catalysts supported on reduced graphene oxide (RGO) have been significantly improved.Other noble metal catalysts such as Pd, Au and Ag also show high catalytic activity.When RGO or a few layers of graphene as carrier, the stability of Pd catalyst is improved.The synthesis method of graphene oxide supported Au or Ag catalyst is discussed.In addition, the non-noble transition metal in the form of N4 chelate complex can reduce the oxygen Of the electrochemical properties of Fe and Co is an alternative cheap ORR catalyst.In most cases, the stability and resistance of these catalysts can be solved, but its overall performance is still very difficult to go beyond the Pt / C catalyst.