4.6 Review

Synthesis of noble metal-based intermetallic electrocatalysts by space-confined pyrolysis: Recent progress and future perspective

Journal

JOURNAL OF ENERGY CHEMISTRY
Volume 60, Issue -, Pages 61-74

Publisher

ELSEVIER
DOI: 10.1016/j.jechem.2020.12.021

Keywords

Intermetallic nanoparticles; Annealing; Space-confined approaches; Particle size; Electrocatalytic performance

Funding

  1. National Key Research and Development Program [2018YFB1502503]
  2. Sichuan Science and Technology Program [2020YJ0299]
  3. Australian Research Council under the future fellowship scheme [FT160100107]

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The review summarizes recent research progress on synthesizing noble metal-based intermetallic electrocatalysts by space-confined pyrolysis, focusing on three strategies: isolation in pores, coverture by shells, and immobilization by salts. The advantages and existing problems of different methods are highlighted, and important issues to be addressed in future research are also discussed.
Noble metal-based intermetallics are promising electrocatalysts for sustainable energy conversion and consumption processes. High-temperature pyrolysis (> 500 degrees C) methods are used to control their crystalline orderings, critical to their electrocatalytic activity and durability. However, the high temperature would cause severe aggregation, resulting in a low catalytic active surface area. Significant research efforts have been devoted to addressing this issue. This short review summarizes recent research progress on synthesizing noble metal-based intermetallic electrocatalysts by space-confined pyrolysis. We focus on three strategies: isolation in pores, coverture by shells, and immobilization by salts. The advantages and existing problems of different methods are highlighted. Last, important issues to be addressed in future research are also discussed. We hope that this article will stimulate future research to develop high-performance intermetallic catalysts for practical applications. (c) 2020 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.

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