Isolating Fe Atoms in N-Doped Carbon Hollow Nanorods through a ZIF-Phase-Transition Strategy for Efficient Oxygen Reduction
文献类型：期刊论文
| 作者 | Ma, FX; Liu, ZQ ; Zhang, GB; Xiong, YX; Zhang, MT; Zheng, LR; Zhen, L; Xu, CY
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| 刊名 | SMALL
 |
| 出版日期 | 2022 |
| 卷号 | 18期号:49页码:2205033 |
| 关键词 | carbon hollow structures Fe-N (4) oxygen reduction reaction phase-transition ZIF |
| ISSN号 | 1613-6810 |
| DOI | 10.1002/smll.202205033 |
| 文献子类 | Article |
| 英文摘要 | Transition metal-nitrogen-carbon (TM-N-C) catalysts have been intensely investigated to tackle the sluggish oxygen reduction reactions (ORRs), but insufficient accessibility of the active sites limits their performance. Here, by using solid ZIF-L nanorods as self-sacrifice templates, a ZIF-phase-transition strategy is developed to fabricate ZIF-8 hollow nanorods with open cavities, which can be subsequently converted to atomically dispersed Fe-N-C hollow nanorods (denoted as Fe-1-N-C HNRs) through rational carbonization and following fixation of iron atoms. The microstructure observation and X-ray absorption fine structure analysis confirm abundant Fe-N-4 active sites are evenly distributed in the carbon skeleton. Thanks to the highly accessible Fe-N-4 active sites provided by the highly porous and open carbon hollow architecture, the Fe-1-N-C HNRs exhibit superior ORR activity and stability in alkaline and acidic electrolytes with very positive half-wave potentials of 0.91 and 0.8 V versus RHE, respectively, both of which surpass those of commercial Pt/C. Remarkably, the dynamic current density (J(K)) of Fe-1-N-C HNRs at 0.85 V versus RHE in alkaline media delivers a record value of 148 mA cm(-2), 21 times higher than that of Pt/C. The assembled Zn-air battery using Fe-1-N-C HNRs as cathode catalyst exhibits a high peak power density of 208 mW cm(-2). |
| 电子版国际标准刊号 | 1613-6829 |
| 语种 | 英语 |
| WOS记录号 | WOS:000871919300001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/300373]  |
| 专题 | 高能物理研究所_多学科研究中心 高能物理研究所_实验物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Ma, FX,Liu, ZQ,Zhang, GB,et al. Isolating Fe Atoms in N-Doped Carbon Hollow Nanorods through a ZIF-Phase-Transition Strategy for Efficient Oxygen Reduction[J]. SMALL,2022,18(49):2205033. |
| APA | Ma, FX.,Liu, ZQ.,Zhang, GB.,Xiong, YX.,Zhang, MT.,...&Xu, CY.(2022).Isolating Fe Atoms in N-Doped Carbon Hollow Nanorods through a ZIF-Phase-Transition Strategy for Efficient Oxygen Reduction.SMALL,18(49),2205033. |
| MLA | Ma, FX,et al."Isolating Fe Atoms in N-Doped Carbon Hollow Nanorods through a ZIF-Phase-Transition Strategy for Efficient Oxygen Reduction".SMALL 18.49(2022):2205033. |
入库方式： OAI收割
来源：高能物理研究所
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