The synthesis of highly active Cu and N co-doped electrocatalysts via strong electrostatic adsorption method for oxygen reduction reaction. (6th July 2021)

• Record Type: Journal Article
• Authors: Lv, Suxue; Zhang, Xiangkun; Li, Yun; Hu, Xu; Huang, Yongmin
• Is Part Of: International journal of hydrogen energy. Volume 46:Number 46(2021)
• Page Start: 23694
• Page End: 23701
• Publication Date: 2021-07-06
• Subjects: Electrocatalysts -- Strong electrostatic adsorption -- Oxygen reduction reaction; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2021.04.179
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: The development of non-precious metal catalysts to replace scarce and costly Pt-based catalysts is crucial for oxygen reduction reaction (ORR), which involves various electrochemical energy conversions, such as fuel cells and metal-air batteries. However, it is still a challenge to devise a simpler method to obtain high-performance non-noble metal catalyst, which can be used for large-scale production. Herein, Cu and N co-doped mesocellular carbon foam ( n -Cu/NC) has been developed by strong electrostatic adsorption (SEA) method, which inherits the original morphology of carbon foam, exhibiting high ORR performance with a half-wave potential of 0.825 V vs. RHE and excellent long-term durability. The outstanding performance of n -Cu/NC is attributed to the high specific surface area, hierarchical porous carbon matrix doped by multiple N atoms and uniform Cu2 O/CuO active sites induced by the SEA method. The strategy of SEA method is applied to the preparation of carbon-supported catalysts, which shows great potential in the design and large-scale production of M and N co-doped carbon materials. Highlights: A versatile strong electrostatic adsorption method reasonably combining carbon support with metal and nitrogen source. . The best n -Cu/NC maintains the original morphology of the carbon support with a hierarchical porous structure. The n -Cu/NC shows outstanding ORR performance comparable to Pt/C in alkaline electrolyte.