金属大环化合物基氧还原电催化剂的研究进展

Progress of metal macrocyclic compound-based oxygen reduction electrocatalysts

作为燃料电池的关键反应,阴极电极上的氧还原反应(ORR)的反应动力学缓慢,需要大量昂贵的铂基电催化剂提高反应动力学。然而,铂的价格昂贵、稀缺和耐久性差等问题严重阻碍了燃料电池系统在实际中的广泛应用。因此,发展廉价高活性的非贵金属氧还原反应催化剂是实现燃料电池商业应用关键途径之一。大环化合物基催化剂以其独特的配位结构和高共轭化学性质发展迅速,被认为是铂基材料的潜在替代品。本文总结了近年来金属大环化合物基氧还原催化剂的发展和研究成果,着重探讨了金属大环化合物基氧还原催化剂的设计和制备,并概述了金属大环化合物基氧还原催化剂面临的挑战和未来的发展方向。

As a key reaction of the fuel cell,the oxygen reduction reaction(ORR)on the cathode electrode has slow reaction kinetics,and a large amount of expensive platinum-based electrocatalysts are needed to improve the reaction kinetics.However,the high price,scarcity and poor durability of platinum seriously hinder the widespread application of fuel cell system in practice.Therefore,developing low cost and high activity non-precious metal oxygen reduction reaction catalysts is one of the key ways to realize the commercial application of fuel cells.Macrocyclic compound-based catalysts are considered as potential substitutes for platinum-based materials due to their unique coordination structure and highly conjugated chemical properties.Here,we summarize the development and research achievements of metal macrocyclic compound-based oxygen reduction catalysts in recent years,emphatically discuss the design and preparation of metal macrocyclic compound-based oxygen reduction catalysts,and outline the challenges and future development direction of metal macrocyclic compound-based oxygen reduction catalysts.