Synergistic Single-Atom and Clustered Cobalt Sites on N/S Co-Doped Defect Nano-Carbon for Efficient H_(2)O_(2)Electrosynthesis  

作　　者：Yuzhong Huang Chang Zhang Xingyu Wang Yuji Wu Jun Lv Jian Zhang Wangqiang Shen Xing Lu 

机构地区：[1]School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,People’s Republic of China [2]School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,People’s Republic of China [3]School of Nuclear Engineering,Rocket Force University of Engineering,Xi’an 710025,People’s Republic of China [4]Performance Copper Alloy Materials and Processing,Ministry of Education,Engineering Research Center of High,Hefei University of Technology,Hefei 230009,People’s Republic of China

出　　处：《Nano-Micro Letters》2025年第6期369-381,共13页纳微快报(英文版)

基　　金：supported by the National Natural Science Foundation of China(22001084,21925104,and 52072107);Nature Science Research Project of Anhui province(2408085MB030);Research funds of Central Universities of Hefei University of Technology(JZ2024HGTB0244).

摘　　要：Non-noble-based single atomic catalysts have exhibited significant potential in electrochemical production of H_(2)O_(2)via twoelectron oxygen reduction reactions(2e^(-)ORR).However,constructing highly efficient and acid-resistant catalysts remains a challenge but significant.In this work,fullerene(C_(60))with abundant pentagonal inherent defects was employed as a carbon substrate to synthesize defect-rich nanocarbon electrocatalysts doped with NSCo single atoms and accompanied by metallic Co nanoparticles(CoSA/CoNP-NSDNC)for the first time.The electrochemical experiments demonstrate that the active sites of CoSA/CoNP-NSDNC are formed through the synergistic interaction between NSCo single atoms and Co nanoparticle clusters embedded within the carbon framework.The obtained CoSA/CoNPNSDNC catalyst exhibits an onset potential as 0.72 V versus RHE and achieves up to 90%H_(2)O_(2)selectivity over a wide potential range of 500 mV.Moreover,the as-obtained CoSA/CoNP-NSDNC configured as the cathode in a self-assembled flow cell under acidic conditions achieves a high H_(2)O_(2)production rate of 4206.96 mmol gcat^(-1 )h^(-1) with a Faraday efficiency of∼95%and exhibit ultra fast degradation of organic pollutants.This work focuses on the synergistic effect of non-noble metal nanoparticles,metal single-atom sites,and topological defects on the 2e^(-)ORR process,which provides a new direction for designing carbon-based catalysts for efficient H_(2)O_(2)electrosynthesis.

关 键 词：Non-noble metal-based materials FULLERENE Single atomic catalysts Oxygen reduction reaction Hydrogen peroxide electroproduction 

分 类 号：O64[理学—物理化学]