Atomically dispersed metal catalysts for the oxygen reduction reaction: synthesis, characterization, reaction mechanisms and electrochemical energy applications

2019 ◽  
Vol 12 (10) ◽  
pp. 2890-2923 ◽  
Author(s):  
Minmin Liu ◽  
Linlin Wang ◽  
Kangning Zhao ◽  
Shanshan Shi ◽  
Qinsi Shao ◽  
...  

Atomically dispersed metal catalysts for the oxygen reduction reaction, including their synthesis, characterization, reaction mechanisms and electrochemical energy application, are reviewed.

2019 ◽  
Vol 2 (4) ◽  
pp. 518-538 ◽  
Author(s):  
Yahao Li ◽  
Qingyu Li ◽  
Hongqiang Wang ◽  
Lei Zhang ◽  
David P. Wilkinson ◽  
...  

Abstract Electrochemical energy storage systems such as fuel cells and metal–air batteries can be used as clean power sources for electric vehicles. In these systems, one necessary reaction at the cathode is the catalysis of oxygen reduction reaction (ORR), which is the rate-determining factor affecting overall system performance. Therefore, to increase the rate of ORR for enhanced system performances, efficient electrocatalysts are essential. And although ORR electrocatalysts have been intensively explored and developed, significant breakthroughs have yet been achieved in terms of catalytic activity, stability, cost and associated electrochemical system performance. Based on this, this review will comprehensively present the recent progresses of ORR electrocatalysts, including precious metal catalysts, non-precious metal catalysts, single-atom catalysts and metal-free catalysts. In addition, major technical challenges are analyzed and possible future research directions to overcome these challenges are proposed to facilitate further research and development toward practical application. Graphic Abstract


2018 ◽  
Vol 20 (41) ◽  
pp. 26675-26680 ◽  
Author(s):  
Liting Cui ◽  
Haining Wang ◽  
Sian Chen ◽  
Jin Zhang ◽  
Yan Xiang ◽  
...  

An efficient model containing only 7 metal atoms was proposed to describe the ORR activity of metal catalysts by DFT calculation.


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