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Zhang Y, Fu H, He C, Zhang H, Li Y, Yang G, Cao Y, Wang H, Peng F, Yang X, Yu H. Configuration Sensitivity of Electrocatalytic Oxygen Reduction Reaction on Nitrogen-Doped Graphene. J Phys Chem Lett 2022; 13:6187-6193. [PMID: 35767660 DOI: 10.1021/acs.jpclett.2c01645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
As one of the most promising nonprecious metal catalysts for the oxygen reduction reaction (ORR), the structure of the active site on nitrogen-doped carbon materials is still under debate. Here, we report that the sensitivity of the ORR on the local configuration of multiple nitrogen dopants may be overlooked. Combining global structure searching with density functional theory calculations, we established the structure-activity relationship for 19 and 298 possible configurations of graphitic nitrogen-doped graphene with N content of 2 and 3%, respectively. It was revealed that the stability cannot be a screener to determine the major contributor to the activity. 77.5% of current density is contributed by the active configuration with 4.59% population on the graphene containing 3% nitrogen. It unambiguously demonstrates the configuration sensitivity of N-doped graphene for ORR and opens a new window to identifying the optimal structure of N-doped carbons for various applications.
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Affiliation(s)
- Yifan Zhang
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510641, China
| | - Hongquan Fu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nan-chong 637000, China
| | - Changchun He
- School of Physics, South China University of Technology, Guangzhou 510641, China
| | - Hai Zhang
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510641, China
| | - Yuhang Li
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Guangxing Yang
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510641, China
| | - Yonghai Cao
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510641, China
| | - Hongjuan Wang
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510641, China
| | - Feng Peng
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Xiaobao Yang
- School of Physics, South China University of Technology, Guangzhou 510641, China
| | - Hao Yu
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510641, China
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Effect of potassium and platinum contents on catalytic performance of Pt/Al2O3 monometallic catalysts for propane dehydrogenation. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2021.112059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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