Increased activity of nitrogen-doped graphene-like carbon sheets modified by iron doping for oxygen reduction
文献类型：期刊论文
| 作者 | Zhou, Tingsheng; Ma, Ruguang; Zhang, Tao; Li, Zichuang; Yang, Minghui; Liu, Qian; Zhu, Yufang; Wang, Jiacheng |
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2019-02-15 |
| 卷号 | 536页码:42 |
| 关键词 | Electrocatalysis Oxygen reduction Carbon sheets N-doping Fe modification |
| ISSN号 | 0021-9797 |
| DOI | 10.1016/j.jcis.2018.10.021 |
| 文献子类 | Article |
| 英文摘要 | Rational design and synthesis of Fe-N-codoped carbon materials are promising for replacing commercial Pt/C for oxygen reduction reaction (ORR). Herein, we develop a simple two-step pyrolysis approach to synthesize highly active Fe-N-codoped graphene-like carbon sheets (FeNGC) with active Fe-N-based species for ORR. In this strategy, two-dimensional nitrogen-doped graphene-like carbon sheets (NGC) with a high N-doping level (8.1 at%) and abundant mesoporosity (3.8 nm) are firstly synthesized by co-pyrolysis of biomass carbon source and dicyandiamide, in which dicyandiamide simultaneously serves as a trifunctional role of in situ reaction template, nitrogen source and porogen. Secondly, FeNGCs are prepared by additional iron doping of NGC at high temperatures, in which sheet-like structure is in favor of increased accessibility of N-functional groups to more Fe atoms, thus giving rise to formation of high-density Fe-N-based active sites. The optimized catalyst synthesized at 950 degrees C (FeNGC-950) demonstrates significantly increased ORR activity with a dominant 4e(-) reduction process compared to pure NGC in alkaline and acidic solutions, which evidently shows the comparable activity to Pt/C due to the synergy of simultaneously optimized structures and multi-active sites. Moreover, FeNGC-950 has better long-term stability and methanol tolerance than Pt/C both in alkaline and acidic electrolytes. The present strategy paves a new venue to design and prepare various metal-doped carbon materials with great potentials in energy applications. (C) 2018 Elsevier Inc. All rights reserved. |
| WOS关键词 | METAL-FREE ELECTROCATALYST ; HIGH-PERFORMANCE ; MESOPOROUS CARBON ; EFFICIENT ; NANOSHEETS ; CATALYST ; SPHERES ; NANOPARTICLES ; ARCHITECTURES ; ELECTRODE |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 源URL | [http://ir.sic.ac.cn/handle/331005/27553]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Zhou, Tingsheng,Ma, Ruguang,Zhang, Tao,et al. Increased activity of nitrogen-doped graphene-like carbon sheets modified by iron doping for oxygen reduction[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2019,536:42. |
| APA | Zhou, Tingsheng.,Ma, Ruguang.,Zhang, Tao.,Li, Zichuang.,Yang, Minghui.,...&Wang, Jiacheng.(2019).Increased activity of nitrogen-doped graphene-like carbon sheets modified by iron doping for oxygen reduction.JOURNAL OF COLLOID AND INTERFACE SCIENCE,536,42. |
| MLA | Zhou, Tingsheng,et al."Increased activity of nitrogen-doped graphene-like carbon sheets modified by iron doping for oxygen reduction".JOURNAL OF COLLOID AND INTERFACE SCIENCE 536(2019):42. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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