Elucidating the Synergic Effect in Nanoscale MoS2/TiO2 Heterointerface for Na‐Ion Storage
Abstract 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...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-12-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202204837 |
| _version_ | 1811197679678521344 |
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| author | Chunrong Ma Dewen Hou Jiali Jiang Yanchen Fan Xiang Li Tianyi Li Zifeng Ma Haoxi Ben Hui Xiong |
| author_facet | Chunrong Ma Dewen Hou Jiali Jiang Yanchen Fan Xiang Li Tianyi Li Zifeng Ma Haoxi Ben Hui Xiong |
| author_sort | Chunrong Ma |
| collection | DOAJ |
| description | Abstract 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 MoS2/TiO2 interface is rationally designed by immobilizing TiO2 nanocrystals on MoS2 nanosheets. The role of heterostructure interface between TiO2 and MoS2 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−1 at 10 A g−1 and excellent reversible capacity of 540 mAh g−1 at 0.2 A g−1. 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. |
| first_indexed | 2024-04-12T01:18:18Z |
| format | Article |
| id | doaj.art-07ae604ed9794b8f9eed0d046bd361be |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-04-12T01:18:18Z |
| publishDate | 2022-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-07ae604ed9794b8f9eed0d046bd361be2022-12-22T03:53:52ZengWileyAdvanced Science2198-38442022-12-01935n/an/a10.1002/advs.202204837Elucidating the Synergic Effect in Nanoscale MoS2/TiO2 Heterointerface for Na‐Ion StorageChunrong Ma0Dewen Hou1Jiali Jiang2Yanchen Fan3Xiang Li4Tianyi Li5Zifeng Ma6Haoxi Ben7Hui Xiong8Key Laboratory of Bio‐Fibers and Eco‐Textiles Qingdao University Qingdao Shandong 266071 ChinaMicron School of Materials Science and Engineering Boise State University Boise ID 83725 USAShandong Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and Engineering Shandong University Qingdao Shandong 266237 ChinaSUSTech Academy for Advanced Interdisciplinary Studies and Department of Materials Science & Engineering Southern University of Science and Technology Shenzhen Guangdong Province 518055 ChinaChemical Sciences and Engineering Division Argonne National Laboratory Lemont Illinois 60439 USAX‐Ray Science Division Argonne National Laboratory Lemont IL 60439 USAShanghai Electrochemical Energy Devices Research Centre School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 ChinaKey Laboratory of Bio‐Fibers and Eco‐Textiles Qingdao University Qingdao Shandong 266071 ChinaMicron School of Materials Science and Engineering Boise State University Boise ID 83725 USAAbstract 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 MoS2/TiO2 interface is rationally designed by immobilizing TiO2 nanocrystals on MoS2 nanosheets. The role of heterostructure interface between TiO2 and MoS2 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−1 at 10 A g−1 and excellent reversible capacity of 540 mAh g−1 at 0.2 A g−1. 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.https://doi.org/10.1002/advs.202204837fast chargingheterointerfacesinterfacial charge storageintrinsic interfacial electric field effectsodium ion batteries |
| spellingShingle | Chunrong Ma Dewen Hou Jiali Jiang Yanchen Fan Xiang Li Tianyi Li Zifeng Ma Haoxi Ben Hui Xiong Elucidating the Synergic Effect in Nanoscale MoS2/TiO2 Heterointerface for Na‐Ion Storage Advanced Science fast charging heterointerfaces interfacial charge storage intrinsic interfacial electric field effect sodium ion batteries |
| title | Elucidating the Synergic Effect in Nanoscale MoS2/TiO2 Heterointerface for Na‐Ion Storage |
| title_full | Elucidating the Synergic Effect in Nanoscale MoS2/TiO2 Heterointerface for Na‐Ion Storage |
| title_fullStr | Elucidating the Synergic Effect in Nanoscale MoS2/TiO2 Heterointerface for Na‐Ion Storage |
| title_full_unstemmed | Elucidating the Synergic Effect in Nanoscale MoS2/TiO2 Heterointerface for Na‐Ion Storage |
| title_short | Elucidating the Synergic Effect in Nanoscale MoS2/TiO2 Heterointerface for Na‐Ion Storage |
| title_sort | elucidating the synergic effect in nanoscale mos2 tio2 heterointerface for na ion storage |
| topic | fast charging heterointerfaces interfacial charge storage intrinsic interfacial electric field effect sodium ion batteries |
| url | https://doi.org/10.1002/advs.202204837 |
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