Elucidating the Synergic Effect in Nanoscale MoS2/TiO2 Heterointerface for Na-Ion Storage

Ma，Chunrong1; Hou，Dewen2,3; Jiang，Jiali4; Fan，Yanchen5; Li，Xiang6; Li，Tianyi7; Ma，Zifeng8; Ben，Haoxi1; Xiong，Hui2,9

2022

10.1002/advs.202204837

Advanced Science   Impact Factor & Quartile

2198-3844

Interface engineering in electrode materials is an attractive strategy for enhancing charge storage, enabling fast kinetics, and improving cycling stability for energy storage systems. Nevertheless, the performance improvement is usually ambiguously ascribed to the “synergetic effect”, the fundamental understanding toward the effect of the interface at molecular level in composite materials remains elusive. In this work, a well-defined nanoscale MoS/TiO interface is rationally designed by immobilizing TiO nanocrystals on MoS nanosheets. The role of heterostructure interface between TiO and MoS by operando synchrotron X-ray diffraction (sXRD), solid-state nuclear magnetic resonance, and density functional theory calculations is investigated. It is found that the existence of a hetero-interfacial electric field can promote charge transfer kinetics. Based on operando sXRD, it is revealed that the heterostructure follows a solid-solution reaction mechanism with small volume changes during cycling. As such, the electrode demonstrates ultrafast Na ions storage of 300 mAh g at 10 A g and excellent reversible capacity of 540 mAh g at 0.2 A g. This work provides significant insights into understanding of heterostructure interface at molecular level, which suggests new strategies for creating unconventional nanocomposite electrode materials for energy storage systems.

fast charging heterointerfaces interfacial charge storage intrinsic interfacial electric field effect sodium ion batteries

SCI

English

Others

National Natural Science Foundation of China["21905160","21776175"] ; Shandong Taishan Scholars Project[ts20190932] ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences program[DE-SC0019121] ; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences[DE-AC02-06CH11357] ; U.S. DOE[DE-AC02-06CH11357] ; Qingdao University[G2RC202021]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000876135400001

WILEY

2-s2.0-85141151663

Scopus

1.Key Laboratory of Bio-Fibers and Eco-Textiles,Qingdao University,Qingdao,Shandong,266071,China
2.Micron School of Materials Science and Engineering,Boise State University,Boise,83725,United States
3.Center for Nanoscale Materials,Argonne National Laboratory,Lemont,60439,United States
4.Shandong Key Laboratory of Water Pollution Control and Resource Reuse,School of Environmental Science and Engineering,Shandong University,Qingdao,Shandong,266237,China
5.SUSTech Academy for Advanced Interdisciplinary Studies and Department of Materials Science & Engineering,Southern University of Science and Technology,Shenzhen,Guangdong Province,518055,China
6.Chemical Sciences and Engineering Division,Argonne National Laboratory,Lemont,60439,United States
7.X-Ray Science Division,Argonne National Laboratory,Lemont,60439,United States
8.Shanghai Electrochemical Energy Devices Research Centre,School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai,200240,China
9.Center for Advanced Energy Studies,Idaho Falls,83401,United States

Ma，Chunrong,Hou，Dewen,Jiang，Jiali,et al. Elucidating the Synergic Effect in Nanoscale MoS2/TiO2 Heterointerface for Na-Ion Storage[J]. Advanced Science,2022.

Ma，Chunrong.,Hou，Dewen.,Jiang，Jiali.,Fan，Yanchen.,Li，Xiang.,...&Xiong，Hui.(2022).Elucidating the Synergic Effect in Nanoscale MoS2/TiO2 Heterointerface for Na-Ion Storage.Advanced Science.

Ma，Chunrong,et al."Elucidating the Synergic Effect in Nanoscale MoS2/TiO2 Heterointerface for Na-Ion Storage".Advanced Science (2022).