Space-Confined One-Step Growth of 2D MoO2/MoS2 Vertical Heterostructures for Superior Hydrogen Evolution in Alkaline Electrolytes

Wu, Qinke1,2; Luo, Yuting1,2; Xie, Ruikuan3; Nong, Huiyu1,2; Cai, Zhengyang1,2; Tang, Lei1,2; Tan, Junyang1,2; Feng, Simin1,2; Zhao, Shilong1,2; Yu, Qiangmin1,2; Lin, Junhao4; Chai, Guoliang3; Liu, Bilu1,2

2022-07-01

10.1002/smll.202201051

Small   Impact Factor & Quartile

1613-6810

1613-6829

2D material-based heterostructures are constructed by stacking or spicing individual 2D layers to create an interface between them, which have exotic properties. Here, a new strategy for the in situ growth of large numbers of 2D heterostructures on the centimeter-scale substrate is developed. In the method, large numbers of 2D MoS2, MoO2, or their heterostructures of MoO2/MoS2 are controllably grown in the same setup by simply tuning the gap distance between metal precursor and growth substrate, which changes the concentration of metal precursors feed. A lateral force microscope is used first to identify the locations of each material in the heterostructures, which have MoO2 on the top of MoS2. Noteworthy, the creation of a clean interface between atomic thin MoO2 (metallic) and MoS2 (semiconducting) results in a different electronic structure compared with pure MoO2 and MoS2. Theoretical calculations show that the charge redistribution at such an interface results in an improved HER performance on the MoO2/MoS2 heterostructures, showing an overpotential of 60 mV at 10 mA cm(-2) and a Tafel slope of 47 mV dec(-1). This work reports a new strategy for the in situ growth of heterostructures on large-scale substrates and provides platforms to exploit their applications.

2D materials heterostructures hydrogen evolution reaction interfaces molybdenum disulfides space-confined growth

SCI ; EI

English

Others

National Science Fund for Distinguished Young Scholars[52125309] ; National Natural Science Foundation of China["51991343","51920105002","52188101","51991340"] ; Guangdong Innovative and Entrepreneurial Research Team Program[2017ZT07C341] ; Bureau of Industry and Information Technology of Shenzhen[201901171523] ; Shenzhen Basic Research Project["JCYJ20200109144620815","JCYJ20200109144616617"]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000826044200001

WILEY-V C H VERLAG GMBH

20222912368997

Electrolytes ; Electronic structure ; Layered semiconductors ; Molybdenum disulfide ; Molybdenum oxide ; Substrates

Electric Batteries and Fuel Cells:702 ; Semiconducting Materials:712.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Materials Science:951

Web of Science

1.Tsinghua Univ, Shenzhen Int Grad Sch, Tsinghua Berkeley Shenzhen Inst, Shenzhen Geim Graphene Ctr, Shenzhen 518055, Peoples R China
2.Tsinghua Univ, Shenzhen Int Grad Sch, Inst Mat Res, Shenzhen 518055, Peoples R China
3.Chinese Acad Sci, State Key Lab Struct Chem, Fujian Inst Res Struct Matter, Fuzhou 350002, Peoples R China
4.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China

Wu, Qinke,Luo, Yuting,Xie, Ruikuan,et al. Space-Confined One-Step Growth of 2D MoO2/MoS2 Vertical Heterostructures for Superior Hydrogen Evolution in Alkaline Electrolytes[J]. Small,2022,18.

Wu, Qinke.,Luo, Yuting.,Xie, Ruikuan.,Nong, Huiyu.,Cai, Zhengyang.,...&Liu, Bilu.(2022).Space-Confined One-Step Growth of 2D MoO2/MoS2 Vertical Heterostructures for Superior Hydrogen Evolution in Alkaline Electrolytes.Small,18.

Wu, Qinke,et al."Space-Confined One-Step Growth of 2D MoO2/MoS2 Vertical Heterostructures for Superior Hydrogen Evolution in Alkaline Electrolytes".Small 18(2022).