Single-atomic cobalt sites embedded in hierarchically ordered porous nitrogen-doped carbon as a superior bifunctional electrocatalyst
文献类型：期刊论文
| 作者 | Sun, TT; Zhao, S; Chen, WX; Zhai, D; Dong, JC; Wang, Y; Zhang, SL; Han, AJ; Gu, L; Yu, R |
| 刊名 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
 |
| 出版日期 | 2018 |
| 卷号 | 115期号:50页码:12692-12697 |
| ISSN号 | 0027-8424 |
| 关键词 | OXYGEN REDUCTION REACTION METAL-ORGANIC FRAMEWORK HYDROGEN EVOLUTION GENERAL-SYNTHESIS CATALYTIC SITES OXIDATION GRAPHENE IDENTIFICATION ARRAYS FOAM |
| DOI | 10.1073/pnas.1813605115 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Exploring efficient and cost-effective catalysts to replace precious metal catalysts, such as Pt, for electrocatalytic oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER) holds great promise for renewable energy technologies. Herein, we prepare a type of Co catalyst with single-atomic Co sites embedded in hierarchically ordered porous N-doped carbon (Co-SAS/HOPNC) through a facile dual-template cooperative pyrolysis approach. The desirable combination of highly dispersed isolated atomic Co-N-4 active sites, large surface area, high porosity, and good conductivity gives rise to an excellent catalytic performance. The catalyst exhibits outstanding performance for ORR in alkaline medium with a half-wave potential (E-1/2) of 0.892 V, which is 53 mV more positive than that of Pt/C, as well as a high tolerance of methanol and great stability. The catalyst also shows a remarkable catalytic performance for HER with distinctly high turnover frequencies of 0.41 and 3.8 s(-1) at an overpotential of 100 and 200 mV, respectively, together with a long-term durability in acidic condition. Experiments and density functional theory (DFT) calculations reveal that the atomically isolated single Co sites and the structural advantages of the unique 3D hierarchical porous architecture synergistically contribute to the high catalytic activity. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31108]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China 2.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China 3.Beijing Univ Technol, Beijing Guyue New Mat Res Inst, Beijing 100124, Peoples R China 4.Shanghai Univ, Mat Genome Inst, Shanghai 200444, Peoples R China 5.Shanghai Univ, Int Ctr Quantum & Mol Struct, Dept Phys, Shanghai 200444, Peoples R China 6.Chinese Acad Sci, Beijing Synchrotron Radiat Facil, Inst High Energy Phys, Beijing 100049, Peoples R China 7.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrontron Radiat Facil, Shanghai 201800, Peoples R China 8.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China 9.Tsinghua Univ, Beijing Natl Ctr Electron Microscopy, Sch Mat Sci & Engn, Beijing 100084, Peoples R China 10.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, TT,Zhao, S,Chen, WX,et al. Single-atomic cobalt sites embedded in hierarchically ordered porous nitrogen-doped carbon as a superior bifunctional electrocatalyst[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(50):12692-12697. |
| APA | Sun, TT.,Zhao, S.,Chen, WX.,Zhai, D.,Dong, JC.,...&Li, YD.(2018).Single-atomic cobalt sites embedded in hierarchically ordered porous nitrogen-doped carbon as a superior bifunctional electrocatalyst.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(50),12692-12697. |
| MLA | Sun, TT,et al."Single-atomic cobalt sites embedded in hierarchically ordered porous nitrogen-doped carbon as a superior bifunctional electrocatalyst".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.50(2018):12692-12697. |
入库方式： OAI收割
来源：上海应用物理研究所
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