空气电极碳基催化剂研究进展

Research progress on carbon-based catalysts for air electrodes

金属空气电池具有高能量密度与低成本等优点,被认为是最具有发展前进的绿色清洁能源之一。反应的持续进行需要催化剂从中催化,常以贵金属、非贵金属、过渡金属氧化物与碳材料为主。其中,碳材料具有低廉的价格、良好的稳定性与氧还原性能,易与其他元素进行掺杂等优势,碳基复合催化剂在空气电极领域备受关注。基于空气电极中发生的氧还原反应机理,详细介绍了近年来炭黑、介孔碳、碳纳米管、碳纳米纤维与石墨烯等碳材料复合催化剂在气体扩散电极领域的研究进展,为未来碳基催化剂的开发与应用提出了新方向。

With the advantages of high energy density and low cost,metal-air batteries are considered to be one of the most promising green and clean energy sources for future development.The continuous reaction requires catalysts from which precious metals,non-precious metals,transition metal oxides and carbon materials are often used as the main catalysts.Among them,carbon materials have the advantages of low price,good stability and oxygen reduction performance,as well as the ease of doping with other elements,etc.Carbon-based composite catalysts are of great interest in the field of air electrodes.Based on the mechanism of oxygen reduction reactions occurring in air electrodes,this paper described in details the research progress of carbon material composite catalysts such as carbon black,mesoporous carbon,carbon nanotubes,carbon nanofibers and graphene in the field of gas diffusion electrodes in recent years,and proposed new directions for the future development and application of carbon-based catalysts.