J. Mater. Sci. Technol. ›› 2022, Vol. 127: 1-18.DOI: 10.1016/j.jmst.2022.03.021

• Review Article •     Next Articles

Recent advances of amorphous-phase-engineered metal-based catalysts for boosted electrocatalysis

Jiakang Tiana, Yongqing Shena, Peizhi Liua, Haixia Zhanga, Bingshe Xua,b, Yanhui Songa,*(), Jianguo Liangc,*(), Junjie Guoa,*()   

  1. aKey Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
    bMaterials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi’an 710021, China
    cCollege of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Abstract:

Amorphous metal-based catalysts (AMCs) have sparked intense research interests in the field of electrocatalysis elicited by their hallmark features such as unlimited volume and morphology, manipulated electronic structures, enriched defects, and unsaturated surface atom coordination. Nevertheless, the manipulation of the amorphous phase in metal-based catalysts is so far impractical, and thus their electrocatalytic mechanism yet remains ambiguous. In this review, the latest advances in AMCs are systematically reviewed, covering amorphous-phase engineering strategy, structure manipulation, and amorphization of various material categories for electrocatalysis. Specifically, a series of applications of AMCs in electrocatalysis for the oxygen reduction reaction (ORR), hydrogen evolution reaction (HER), and oxygen evolution reaction (OER) are summarized based on the classification criteria of substances. Finally, we put forward current challenges that have not yet been clarified in the field of AMCs, and propose possible solutions, particularly from the perspective of the evolution of electron microscopy. It is expected to promote the understanding of the amorphization-catalysis relationship and provide a guideline for designing high-performance electrocatalysts.

Key words: Amorphous metal-based catalysts, Electrocatalysis, Electron microscopy, Interface engineering, Surface engineering, Defect engineering, Strain engineering