Metal complexes of N₄-macrocycles such as porphyrins and phthalocyanines have been studied for several decades as alternatives to Pt catalysts in polymer electrolyte fuel cells (PEFCs) and polymer electrolyte membrane (PEM) water electrolyzers. This review mainly describes the recent development of these catalysts for use in anode and cathode of PEFCs and PEM water electrolyzers. Performance of the developed catalysts and strategies of the development are summarized. This review aimed to discuss the advantages and disadvantages of the metallomacrocycle-based catalysts compared to conventional Pt electrocatalysts, and to emphasize their functions that the Pt catalyst does not have.

N _4大环金属的金属配合物，例如卟啉和酞菁，已经被研究了数十年，作为 聚合物电解质燃料电池（PEFC）和聚合物电解质膜（PEM）水电解槽中Pt催化剂的替代品。这篇综述主要描述了用于PEFC和PEM水电解槽的阳极和阴极的这些催化剂的最新发展。总结了已开发催化剂的性能和开发策略。这篇综述的目的是讨论与常规的Pt电催化剂相比，基于金属大环的催化剂的优点和缺点，并强调其功能是Pt催化剂所不具备的。