二维过渡金属碳化物或碳氮化物在燃料电池催化剂中的应用研究进展

Research progress of two-dimensional transition metal carbides and carbonitrides materials for fuel-cell catalysts

MXene是一类新型二维层状过渡金属碳化物或碳氮化物,一般通过化学刻蚀的方法制得,因具有良好的导电性、亲水性、透光性、柔韧性,在催化、能量储存、复合材料、传感器、抗菌等领域有潜在的应用前景。本文简要介绍了MXene的制备方法、结构、稳定性及电子性质,总结了其在燃料电池领域的应用研究成果,重点介绍了MXene作为Pt催化剂载体,在氧还原反应中的活性和稳定性表现,最后提出了MXene作为催化剂载体及以后在燃料电池中应用存在的问题和挑战。

This article reviews the applications of MXene materials used in fuel cells.MXene is a new family of two-dimensional transition metal carbides and carbonitrides materials.This kind of materials can usually be produced by etching the A element from the MAX phases.For the good electrical conductivity,hydrophilicity,transparency and flexibility,MXenes will be good candidates in the fields of catalysis,energy storage,composite materials,sensor,antibiosis and so on.The synthetic methods,structure,chemical stability and electronic characteristics of MXenes are briefly introduced in this paper.The applications of these materials in fuel cells are summarized,especially as Pt catalyst supporters.MXene supported Pt catalysts exhibit high activity and stability for oxygen reduction reaction.At the end of the article,some problems and challenges of MXene used in fuel cells and as catalysts supporters are proposed.