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Recent Advances of Structurally Ordered Intermetallic Nanoparticles for Electrocatalysis
ACS Catalysis ( IF 11.3 ) Pub Date : 2018-03-06 00:00:00 , DOI: 10.1021/acscatal.7b04420
Weiping Xiao 1 , Wen Lei 1 , Mingxing Gong 1 , Huolin L. Xin 2 , Deli Wang 1
Affiliation  

Structurally ordered intermetallic phases have exhibited higher and higher electrocatalytic activity and stability than disordered alloys in many reactions such as the oxygen reduction reaction (ORR) and small-molecule (hydrogen, formic acid, or ethanol) oxidation reactions. The enhanced electrocatalytic activity could be derived from the definite composition and predictable control over structural, geometric, and electronic effects. This review, based on the understanding of the catalytic mechanism of structurally ordered intermetallic nanoparticles, provides a comprehensive acknowledgment of how the particle size and morphology affect the catalytic performance. The strategy for reducing particle size and the impact of particle size on electrocatalysis will be first introduced. Then, recent developments in the synthesis and design of morphology-controlled catalysts are summarized. The structure–activity relationship between the catalytic activity and morphology including core–shell/hollow and porosity will be highlighted. Finally, the current challenges and future developments are provided. On the basis of this review, intermetallic nanoparticles will shed light on the future development of electrocatalysts for fuel cells and metal-air batteries.

中文翻译:

结构有序的金属间纳米粒子用于电催化的最新进展

在许多反应(例如氧还原反应(ORR)和小分子(氢,甲酸或乙醇)氧化反应)中,结构有序的金属间相与无序合金相比,具有越来越高的电催化活性和稳定性。增强的电催化活性可以源自确定的组成以及对结构,几何和电子效应的可预测控制。这篇综述基于对结构有序的金属间纳米颗粒催化机理的理解,对粒度和形态如何影响催化性能提供了全面的认识。首先将介绍减小粒径和粒径对电催化作用的影响的策略。然后,总结了形态控制催化剂的合成和设计的最新进展。催化活性与包括核-壳/中空和孔隙度在内的形态之间的结构-活性关系将被重点介绍。最后,提供了当前的挑战和未来的发展。在此审查的基础上,金属间纳米粒子将为燃料电池和金属空气电池用电催化剂的未来发展提供启示。
更新日期:2018-03-06
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