Engineering unsymmetrically coordinated Cu-S1N3 single atom sites with enhanced oxygen reduction activity

Abstract Atomic interface regulation is thought to be an efficient method to adjust the performance of single atom catalysts. Herein, a practical strategy was reported to rationally design single copper atoms coordinated with both sulfur and nitrogen atoms in metal-organic framework derived hierarchically porous carbon (S-Cu-ISA/SNC). The atomic interface configuration of the copper site in S-Cu-ISA/SNC is detected to be an unsymmetrically arranged Cu-S 1 N 3 moiety. The catalyst exhibits excellent oxygen reduction reaction activity with a half-wave potential of 0.918 V vs. RHE. Additionally, through in situ X-ray absorption fine structure tests, we discover that the low-valent Cuprous-S 1 N 3 moiety acts as…

• SS
  Salt Science Research Foundation

  Award: BL14W1
• NN
  National Natural Science Foundation of China

  Awards: 51631001, 51501010, 21871159, 21890383, 21801015, BL1W1B, BL01B, 21671117, No. 51631001, 51872030, 2017YFB0701600, 51702016, 11874036, 21643003
• BI
  Beijing Institute of Technology

  Award: 3090012221909
• BI
  Beijing Institute of Technology Research Fund Program for Young Scholars

  Award: 3090012221909
• NS
  National Synchrotron Radiation Laboratory

  Awards: BL01B, BL10B
• NS
  National Synchrotron Radiation Research Center
• SF
  Shenzhen Fundamental Research Program
• GP
  Guangdong Provincial Pearl River Talents Program

  Award: 2017BT01N111
• NN
  National Natural Science Foundation of China-Yunnan Joint Fund

  Awards: 21671117, 21871159
• NK
  National Key Research and Development Program of China

  Awards: 2018YFA0702003, 51631001, 2017YFB0701600
• FR
  Fundamental Research Funds for the Central Universities

  Award: BL14W1
• BS
  Beijing Synchrotron Radiation Facility

  Award: BL14W1