Defect-engineered three-dimensional vanadium diselenide microflowers/nanosheets on carbon cloth by chemical vapor deposition for high-performance hydrogen evolution reaction
文献类型：期刊论文
| 作者 | Miao,Chengcheng5; Zhang,Ting5; Li,Fulin5; Zhang,Lei1; Sun,Jiamin5; Liu,Dong5; Wu,Liqian2; Wang,Hang3; Chen,Fenghua4; He,Longbing1 |
| 刊名 | Nanotechnology
 |
| 出版日期 | 2021-04-13 |
| 卷号 | 32期号:26 |
| 关键词 | defect engineering vanadium diselenide 3D microflowers/nanosheets chemical vapor deposition hydrogen evolution reaction |
| ISSN号 | 0957-4484 |
| DOI | 10.1088/1361-6528/abecb8 |
| 英文摘要 | Abstract In the past decades, defect engineering has become an effective strategy to significantly improve the hydrogen evolution reaction (HER) efficiency of electrocatalysts. In this work, a facile chemical vapor deposition (CVD) method is firstly adopted to demonstrate defect engineering in high-efficiency HER electrocatalysts of vanadium diselenide nanostructures. For practical applications, the conductive substrate of carbon cloth (CC) is selected as the growth substrate. By using a four-time CVD method, uniform three-dimensional microflowers with defect-rich small nanosheets on the surface are prepared directly on the CC substrate, displaying a stable HER performance with a low Tafel slope value of 125 mV dec?1 and low overpotential voltage of 295 mV at a current density of 10 mA cm?2 in alkaline electrolyte. Based on the results of x-ray photoelectron spectra and density functional theory calculations, the impressive HER performance originates from the Se vacancy-related active sites of small nanosheets, while the microflower/nanosheet homoepitaxy structure facilitates the carrier flow between the active sites and conductive substrate. All the results present a new route to achieve defect engineering using the facile CVD technique, and pave a novel way to prepare high-activity layered electrocatalysts directly on a conductive substrate. |
| 语种 | 英语 |
| WOS记录号 | IOP:0957-4484-32-26-ABECB8 |
| 出版者 | IOP Publishing |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/47700]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Yang,Zai-xing |
| 作者单位 | 1.SEU-FEI Nano-Pico Center, Key Lab of MEMS of Ministry of Education, Collaborative Innovation Center for Micro/Nano Fabrication, Device and System, Southeast University, Nanjing, 210096, People’s Republic of China 2.School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, 310018, People’s Republic of China 3.State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China 4.School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, 030024, People’s Republic of China 5.School of Physics, School of Microelectronics, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Miao,Chengcheng,Zhang,Ting,Li,Fulin,et al. Defect-engineered three-dimensional vanadium diselenide microflowers/nanosheets on carbon cloth by chemical vapor deposition for high-performance hydrogen evolution reaction[J]. Nanotechnology,2021,32(26). |
| APA | Miao,Chengcheng.,Zhang,Ting.,Li,Fulin.,Zhang,Lei.,Sun,Jiamin.,...&Yang,Zai-xing.(2021).Defect-engineered three-dimensional vanadium diselenide microflowers/nanosheets on carbon cloth by chemical vapor deposition for high-performance hydrogen evolution reaction.Nanotechnology,32(26). |
| MLA | Miao,Chengcheng,et al."Defect-engineered three-dimensional vanadium diselenide microflowers/nanosheets on carbon cloth by chemical vapor deposition for high-performance hydrogen evolution reaction".Nanotechnology 32.26(2021). |
入库方式： OAI收割
来源：过程工程研究所
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