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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, Yang2,3; Qian, Yumin4; Luo, Zhaoping5; Li, Haijing6; Chen, Lanlan7; Cao, Xumeng5; Wei, Shiqiang7; Zhou, Bo8; Zhang, Zhenhua9; Chen, Shuai10
刊名NATURE COMMUNICATIONS
出版日期2022-11-24
卷号13期号:1页码:11
DOI10.1038/s41467-022-34976-1
通讯作者Zhang, Xian-Ming(zhangxm@dns.sxnu.edu.cn) ; Fan, Xiujun(fxiujun@gmail.com)
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.
资助项目National Natural Science Foundation of China[22175109] ; Natural Science Foundation of Excellent Young Scholars for Shanxi Province[201901D211198] ; Fund for Shanxi 1331 Project
WOS研究方向Science & Technology - Other Topics
语种英语
出版者NATURE PORTFOLIO
WOS记录号WOS:000888905000022
资助机构National Natural Science Foundation of China ; Natural Science Foundation of Excellent Young Scholars for Shanxi Province ; Fund for Shanxi 1331 Project
源URL[http://ir.imr.ac.cn/handle/321006/176958]  
专题金属研究所_中国科学院金属研究所
通讯作者Zhang, Xian-Ming; Fan, Xiujun
作者单位1.Canadian Light Source, Saskatoon, SK S7N 2V3, Canada
2.Shanxi Univ, Inst Crystalline Mat, Taiyuan 030006, Shanxi, Peoples R China
3.Taiyuan Univ Technol, Coll Chem, Coll Mat Sci & Engn, Key Lab Interface Sci & Engn Adv Mat, Taiyuan 030024, Shanxi, Peoples R China
4.Beijing Inst Technol, Sch Phys, Beijing Key Lab Nanophoton & Ultrafine Optoelect, Beijing 100081, Peoples R China
5.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
6.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China
7.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China
8.Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, Beijing 100124, Peoples R China
9.Hangzhou Dianzi Univ, Innovat Ctr Adv Mat, Hangzhou 310018, Zhejiang, Peoples R China
10.Chinese Acad Sci, Inst Coal Chem, Taiyuan 030001, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Yang,Qian, Yumin,Luo, Zhaoping,et al. Water induced ultrathin Mo2C nanosheets with high-density grain boundaries for enhanced hydrogen evolution[J]. NATURE COMMUNICATIONS,2022,13(1):11.
APA Yang, Yang.,Qian, Yumin.,Luo, Zhaoping.,Li, Haijing.,Chen, Lanlan.,...&Fan, Xiujun.(2022).Water induced ultrathin Mo2C nanosheets with high-density grain boundaries for enhanced hydrogen evolution.NATURE COMMUNICATIONS,13(1),11.
MLA Yang, Yang,et al."Water induced ultrathin Mo2C nanosheets with high-density grain boundaries for enhanced hydrogen evolution".NATURE COMMUNICATIONS 13.1(2022):11.

入库方式： OAI收割

来源：金属研究所

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