WS2 moire superlattices derived from mechanical flexibility for hydrogen evolution reaction

被引:215
|
作者
Xie, Lingbin [1 ,2 ,3 ]
Wang, Longlu [4 ,5 ]
Zhao, Weiwei [1 ,2 ,3 ]
Liu, Shujuan [1 ,2 ,3 ]
Huang, Wei [1 ,2 ,3 ,6 ]
Zhao, Qiang [1 ,2 ,3 ,4 ,5 ]
机构
[1] Nanjing Univ Posts & Telecommun, State Key Lab Organ Elect & Informat Displays, Nanjing, Peoples R China
[2] Nanjing Univ Posts & Telecommun, Inst Adv Mat IAM, Jiangsu Key Lab Biosensors, Nanjing, Peoples R China
[3] Nanjing Univ Posts & Telecommun, Inst Flexible Elect Future Technol, Nanjing, Peoples R China
[4] Nanjing Univ Posts & Telecommun NUPT, Coll Elect & Opt Engn, Jiangsu Prov Engn Res Ctr Fabricat & Applicat Spe, Nanjing, Peoples R China
[5] Nanjing Univ Posts & Telecommun NUPT, Coll Microelect, Jiangsu Prov Engn Res Ctr Fabricat & Applicat Spe, Nanjing, Peoples R China
[6] Northwestern Polytech Univ, MIIT Key Lab Flexible Elect KLoFE, Frontiers Sci Ctr Flexible Elect FSCFE, Xian, Shaanxi, Peoples R China
关键词
COLLOIDAL SYNTHESIS; CORRELATED STATES; MOS2; NANOSHEETS; ELECTROCATALYSTS; THIOMOLYBDATE; PERFORMANCE; NANOWIRES; INSULATOR; SURFACES;
D O I
10.1038/s41467-021-25381-1
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The discovery of moire superlattices (MSLs) opened an era in the research of 'twistronics'. Engineering MSLs and realizing unique emergent properties are key challenges. Herein, we demonstrate an effective synthetic strategy to fabricate MSLs based on mechanical flexibility of WS2 nanobelts by a facile one-step hydrothermal method. Unlike previous MSLs typically created through stacking monolayers together with complicated method, WS2 MSLs reported here could be obtained directly during synthesis of nanobelts driven by the mechanical instability. Emergent properties are found including superior conductivity, special superaerophobicity and superhydrophilicity, and strongly enhanced electro-catalytic activity when we apply 'twistronics' to the field of catalytic hydrogen production. Theoretical calculations show that such excellent catalytic performance could be attributed to a closer to thermoneutral hydrogen adsorption free energy value of twisted bilayers active sites. Our findings provide an exciting opportunity to design advanced WS2 catalysts through moire superlattice engineering based on mechanical flexibility. Expanding the available materials with moire superlattices is interesting but also challenging. Here the authors use a one-step hydrothermal approach to synthesis WS2 moire superlattices with high catalytic activity for hydrogen evolution reaction
引用
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页数:9
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