Increased SO2 electrooxidation activity on a copper-nitrogen doped catalyst and its active sites analysis
文献类型：期刊论文
| 作者 | Zhao, Qing1,2; Hou, Ming1; Jiang, Shangfeng1,2; Ai, Jun1; Zheng, Limin1; Shao, Zhigang1 |
| 刊名 | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
 |
| 出版日期 | 2018-02-01 |
| 卷号 | 43期号:5页码:2794-2802 |
| 关键词 | So2 Electrooxidation Cu-n Doped Doping(i)-cu@n-c Active Site Prereduction Chitosan |
| ISSN号 | 0360-3199 |
| DOI | 10.1016/j.ijhydene.2017.12.153 |
| 文献子类 | Article |
| 英文摘要 | It's a meaningful work to develop a highly active nonprecious SO2 electrooxidation catalyst, replacing the Pt-based ones. Here, a novel Cu-N doped carbon-based catalyst is synthesized by pyrolyzing the imidazole chelated copper ions on the chitosan modified carbon BP2000. During the preparation, metallic Cu is developed and encapsulated in the carbon lattices, and transformed into the CuNx structures on the catalyst surface, simultaneously. Metallic Cu plays significant role in the doping and developing of active sites, which have vital effects on the catalysis activity. The prereduction of Cu2+ by NaBH4 during the preparation of Doping(I)-Cu@N-C makes great contribution to the development of metallic Cu, which highly dispersive anchor in the carbon lattices. This as-synthesized Doping(I)-Cu@N-C catalyst exhibits excellent SO2 electrooxidation activity. Its SO2 oxidation currents are remarkably increased with the elevation of applied potentials, and the oxidation performances prominently surpass the commercial Pt/C, when the potential is above 0.822 V. The peak SO2 oxidation current (i(p)) of Doping(I)-Cu@N-C is 7.17 mA cm(-2) @ 0.684 V, much higher than the 3.03 mA cm(-2)@ 0.584 V of Pt/C with the same mass loading. In the chronoamperometry tests under 1.2 V, the terminal oxidation current of Doping(I)-Cu@N-C was 1.74 times as high as that of Pt/C, indicating that this prepared catalyst also displays much better SO2 electrooxidation activity than Pt/C under constant applied potentials. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. |
| WOS关键词 | OXYGEN REDUCTION REACTION ; POLYCRYSTALLINE GOLD ELECTRODES ; SULFUR-DIOXIDE ; AQUEOUS SO2 ; ELECTROCHEMICAL-BEHAVIOR ; ACIDIC MEDIA ; SO2-DEPOLARIZED ELECTROLYSIS ; CARBON NANOFIBERS ; C CATALYST ; OXIDATION |
| WOS研究方向 | Chemistry ; Electrochemistry ; Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:000425563200023 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/168748]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Hou, Ming; Shao, Zhigang |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Syst & Engn Lab, 457 Zhongshan Rd, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Qing,Hou, Ming,Jiang, Shangfeng,et al. Increased SO2 electrooxidation activity on a copper-nitrogen doped catalyst and its active sites analysis[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2018,43(5):2794-2802. |
| APA | Zhao, Qing,Hou, Ming,Jiang, Shangfeng,Ai, Jun,Zheng, Limin,&Shao, Zhigang.(2018).Increased SO2 electrooxidation activity on a copper-nitrogen doped catalyst and its active sites analysis.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,43(5),2794-2802. |
| MLA | Zhao, Qing,et al."Increased SO2 electrooxidation activity on a copper-nitrogen doped catalyst and its active sites analysis".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 43.5(2018):2794-2802. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。