高熵氧化物电解水析氧催化剂的研究进展

Advances in High Entropy Oxide Electrocatalysts for Oxygen Evolution Reaction of Water Splitting

低碳环保、清洁高效的氢能有助于缓解当前严峻的能源短缺问题与环境污染危机,但电解水制氢过程中阳极析氧反应(OER)动力学缓慢、过电位高等因素制约了电解效率,因而开发高效廉价的OER催化剂成为电解水制氢技术商业化应用中的巨大挑战;由于具有熵稳定效应、元素组成与表面电子结构可调、金属活性位点丰富等特性,高熵氧化物近年来在电催化领域展现出良好的应用前景;主要综述了高熵氧化物的制备方法及其作为电解水OER催化剂的最新研究进展,并针对该领域发展中面临的障碍与难题提出应对策略。

Low-carbon,environmental-friendly,clean and efficient hydrogen energy contributes to alleviate currently severe energy shortage dilemma and environmental pollution crisis.However,the slow kinetics of anodic oxygen evolution reaction(OER)and high overpotential in the process of hydrogen producing from water electrolysis limit its efficiency.Thus,the development of cheap and efficient electrocatalysts has become a huge challenge in the commercial application of water-electrolysis hydrogenproduction technology.Owing to possessing the characteristics of entropy stabilization effect,adjustable element composition and surface electronic structure as well as abundant active metal sites,high entropy oxides exhibit the good application-prospect in the field of electrocatalysis.In this review,we mainly focus on the preparation methods of high entropy oxides and its latest research progress in the domain of electrocatalyst upon OER of water splitting,and also put forward the countermeasures for solving the obstacles and problems in the development of high entropy oxides.