| Identification of active sites in nitrogen and sulfur co-doped carbon-based oxygen reduction catalysts | |
| Li, Jin-Cheng1,2; Qin, Xueping3; Hou, Peng-Xiang1; Cheng, Min1; Shi, Chao1; Liu, Chang1; Cheng, Hui-Ming1; Shao, Minhua2,3 | |
| Corresponding Author | Liu, Chang(cliu@imr.ac.cn) ; Shao, Minhua(kemshao@ust.hk) |
| 2019-06-01 | |
| Source Publication | CARBON
 |
| ISSN | 0008-6223 |
| Volume | 147Pages:303-311 |
| Abstract | Different heteroatoms co-doped carbons are a burgeoning class of metal-free catalysts to replace Pt for the oxygen reduction reaction (ORR), but the lack of understanding of active sites delays their further improvement. Here we combined experimental designs and theoretical simulations with attempts to understand the correlation between N and/or S doping configurations and their catalytic activities. The results indicated that there is no obvious synergistic effect between N and S co-doping, in contrast with previous observations. S doping followed by N doping contributes to a large pyridinic N content in the catalyst due to the low formation energy for N to substitute doped S, leading to greatly enhanced ORR activity. Inversely, N doping followed by S doping takes pyridinic N away, resulting in an obvious ORR performance loss. Therefore, the doping sequence of S and N is crucial for the ORR activity of the co-doped catalysts. Furthermore, the pyridinic N is determined as the active functional group in N, S co-doped carbons by first-principle density functional theory calculations. (C) 2019 Elsevier Ltd. All rights reserved. |
| Keyword | Co-doped carbon Doping configuration Active site Oxygen reduction |
| Funding Organization | National Natural Science Foundation of China ; National Key R&D Program of China ; Ministry of Science and Technology of China ; Guangdong Special Fund for Science and Technology Development (Hong Kong Technology Cooperation Funding Scheme) ; Research Grant Council of the Hong Kong Special Administrative Region |
| DOI | 10.1016/j.carbon.2019.01.018 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51521091] ; National Natural Science Foundation of China[51532008] ; National Natural Science Foundation of China[51572264] ; National Natural Science Foundation of China[51625203] ; National Natural Science Foundation of China[51772303] ; National Key R&D Program of China[2017YFB0102900] ; Ministry of Science and Technology of China[2016YFA0200102] ; Guangdong Special Fund for Science and Technology Development (Hong Kong Technology Cooperation Funding Scheme)[201704030065] ; Guangdong Special Fund for Science and Technology Development (Hong Kong Technology Cooperation Funding Scheme)[201704030019] ; Guangdong Special Fund for Science and Technology Development (Hong Kong Technology Cooperation Funding Scheme)[201604030012] ; Research Grant Council of the Hong Kong Special Administrative Region[N_HKUST610/17] |
| WOS Research Area | Chemistry ; Materials Science |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000468156500035 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/133620 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Chang; Shao, Minhua |
| Affiliation | 1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Hong Kong Univ Sci & Technol, Fok Ying Tung Res Inst, Guangzhou 511458, Guangdong, Peoples R China 3.Hong Kong Univ Sci & Technol, Dept Chem & Biol Engn, Kowloon, Clear Water Bay, Hong Kong, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Jin-Cheng,Qin, Xueping,Hou, Peng-Xiang,et al. Identification of active sites in nitrogen and sulfur co-doped carbon-based oxygen reduction catalysts[J]. CARBON,2019,147:303-311. |
| APA | Li, Jin-Cheng.,Qin, Xueping.,Hou, Peng-Xiang.,Cheng, Min.,Shi, Chao.,...&Shao, Minhua.(2019).Identification of active sites in nitrogen and sulfur co-doped carbon-based oxygen reduction catalysts.CARBON,147,303-311. |
| MLA | Li, Jin-Cheng,et al."Identification of active sites in nitrogen and sulfur co-doped carbon-based oxygen reduction catalysts".CARBON 147(2019):303-311. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment