炭负载铁系元素催化剂在氧还原反应中的应用研究进展  

Recent advances in carbon-supported iron group electrocatalysts for the oxygen reduction reaction

作　　者：李平 王焕磊 LI Ping;WANG Huan-lei(School of Materials Science and Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学材料科学与工程学院,山东青岛266100

出　　处：《新型炭材料》2021年第4期665-682,共18页New Carbon Materials

基　　金：山东省自然科学基金(ZR2020ME038);山东省重点研发计划(公益类科技攻关)(2019GGX102038);中央高校基本科研业务费专项(201941010,201822008);青岛市应用基础研究计划项目(19-6-2-77-cg);国家自然科学基金(21471139).

摘　　要：金属-空气电池作为新兴的能源装置受到了人们的关注。氧还原反应(ORR)是金属-空气电池的关键电化学过程。由于氧还原反应缓慢的动力学速率和铂基ORR催化剂高昂的价格严重阻碍了金属-空气电池的规模化应用。铁系元素不但地球储量丰富而且具有多样的杂化轨道,将铁系元素引入到炭骨架中可以实现与铂相近的催化性能,非常有希望取代铂基催化剂成为商用ORR催化剂。本文根据活性位点的分类,对铁系元素基炭催化剂在ORR中的应用进行了综述,并系统总结了各中活性位点在ORR过程中的作用机理。本文在系统论述炭负载铁系元素催化剂结构和性能间构效关系的基础上,充分认识铁系元素在ORR中的作用,为今后设计具有高效ORR催化性能的廉价催化剂提供技术支撑和理论指导。Metal-air batteries are emerging energy devices that have received worldwide attention.The oxygen reduction reaction(ORR)is the key electrochemical process of metal-air batteries.The sluggish nature of ORR kinetics and the high cost of Pt-based ORR catalysts have severely hindered their large-scale application.As earth-abundant elements,the iron group elements have a vari-ety of hybrid orbitals,and their incorporation into the carbon skeleton achieves good ORR catalytic activity,giving them great poten-tial for substituting for Pt-based catalysts.Here,their uses for ORR and the function of each active site in the ORR process are sum-marized.The relationship between the microstructure and performance of these catalysts may help us fully understand the role of iron group elements in ORR and provide basic insight into the design of cheap catalysts with outstanding ORR catalytic performance in the future.

关 键 词：铁系元素 炭基催化剂 杂原子掺杂 氧还原反应 结构调控 

分 类 号：TB33[一般工业技术—材料科学与工程]