Water induced ultrathin Mo2C nanosheets with high-density grain boundaries for enhanced hydrogen evolution
文献类型：期刊论文
| 作者 | Yang, Y; Qian, YM; Luo, ZP; Li, HJ ; Chen, LL; Cao, XM; Wei, SQ; Zhou, B; Zhang, ZH; Chen, S
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| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2022 |
| 卷号 | 13期号:1页码:7225 |
| DOI | 10.1038/s41467-022-34976-1 |
| 文献子类 | Article |
| 英文摘要 | Probing the direct effect of grain boundaries as active catalytic sites is very challenging. Here, the authors reveal that the d(z)(2) orbital energy level of Mo atoms in grain boundaries exhibits an intrinsic relationship with the hydrogen evolution activity. Grain boundary controlling is an effective approach for manipulating the electronic structure of electrocatalysts to improve their hydrogen evolution reaction performance. However, probing the direct effect of grain boundaries as highly active catalytic hot spots is very challenging. Herein, we demonstrate a general water-assisted carbothermal reaction strategy for the construction of ultrathin Mo2C nanosheets with high-density grain boundaries supported on N-doped graphene. The polycrystalline Mo2C nanosheets are connected with N-doped graphene through Mo-C bonds, which affords an ultra-high density of active sites, giving excellent hydrogen evolution activity and superior electrocatalytic stability. Theoretical calculations reveal that the d(z)(2) orbital energy level of Mo atoms is controlled by the MoC3 pyramid configuration, which plays a vital role in governing the hydrogen evolution activity. The d(z)(2) orbital energy level of metal atoms exhibits an intrinsic relationship with the catalyst activity and is regarded as a descriptor for predicting the hydrogen evolution activity. |
| 电子版国际标准刊号 | 2041-1723 |
| 语种 | 英语 |
| WOS记录号 | WOS:000888905000022 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/299966]  |
| 专题 | 高能物理研究所_核技术应用研究中心 高能物理研究所_实验物理中心 高能物理研究所_加速器中心 高能物理研究所_多学科研究中心 |
| 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 | Yang, Y,Qian, YM,Luo, ZP,et al. Water induced ultrathin Mo2C nanosheets with high-density grain boundaries for enhanced hydrogen evolution[J]. NATURE COMMUNICATIONS,2022,13(1):7225. |
| APA | Yang, Y.,Qian, YM.,Luo, ZP.,Li, HJ.,Chen, LL.,...&Fan, XJ.(2022).Water induced ultrathin Mo2C nanosheets with high-density grain boundaries for enhanced hydrogen evolution.NATURE COMMUNICATIONS,13(1),7225. |
| MLA | Yang, Y,et al."Water induced ultrathin Mo2C nanosheets with high-density grain boundaries for enhanced hydrogen evolution".NATURE COMMUNICATIONS 13.1(2022):7225. |
入库方式： OAI收割
来源：高能物理研究所
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