Exploring the Synergistic Effects of MoS<sub>2</sub> and PVDF for Advanced Piezoelectric Sensors: A First-Principles Approach
Flexible wearable electronic devices have found widespread applications in health monitoring and human–machine interaction. Piezoelectric sensors, capable of converting mechanical stress into electrical signals, serve as critical components in these systems. In this study, we enhanced the piezoelect...
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MDPI AG
2025-03-01
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| Online Access: | https://www.mdpi.com/1424-8220/25/7/2085 |
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| author | Rui Li Juqi Wang Aolin Li Quanbin Ma Shi Feng Bo Ran Lingling Zhang |
| author_facet | Rui Li Juqi Wang Aolin Li Quanbin Ma Shi Feng Bo Ran Lingling Zhang |
| author_sort | Rui Li |
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| description | Flexible wearable electronic devices have found widespread applications in health monitoring and human–machine interaction. Piezoelectric sensors, capable of converting mechanical stress into electrical signals, serve as critical components in these systems. In this study, we enhanced the piezoelectric performance of PVDF-based composite materials through MoS<sub>2</sub> incorporation. Experimental results demonstrated that MoS<sub>2</sub> addition effectively increased the β-phase content in PVDF, achieving a maximum value of 70.0% at an optimal MoS<sub>2</sub> concentration of 0.75 wt%. Density functional theory (DFT) calculations revealed that while β-phase PVDF possesses slightly higher energy than other phases, it exhibits stronger adsorption interactions and enhanced charge transfer with MoS<sub>2</sub>, thereby promoting β-phase formation. The fabricated MoS<sub>2</sub>/PVDF composite nanofiber film maintained stable voltage output under repeated mechanical stress through 2000 operational cycles. When implemented as a body-mounted sensor, the composite material demonstrated exceptional responsiveness to human motions, confirming its practical potential for wearable electronics applications. |
| format | Article |
| id | doaj-art-b94df1aee668459ea6c90d899d443747 |
| institution | OA Journals |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
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| series | Sensors |
| spelling | doaj-art-b94df1aee668459ea6c90d899d4437472025-08-20T02:15:46ZengMDPI AGSensors1424-82202025-03-01257208510.3390/s25072085Exploring the Synergistic Effects of MoS<sub>2</sub> and PVDF for Advanced Piezoelectric Sensors: A First-Principles ApproachRui Li0Juqi Wang1Aolin Li2Quanbin Ma3Shi Feng4Bo Ran5Lingling Zhang6Xinjiang Key Laboratory of Solid-State Physics and Devices, School of Physics Science and Technology, Xinjiang University, Urumqi 830046, ChinaXinjiang Key Laboratory of Solid-State Physics and Devices, School of Physics Science and Technology, Xinjiang University, Urumqi 830046, ChinaXinjiang Key Laboratory of Solid-State Physics and Devices, School of Physics Science and Technology, Xinjiang University, Urumqi 830046, ChinaXinjiang Key Laboratory of Solid-State Physics and Devices, School of Physics Science and Technology, Xinjiang University, Urumqi 830046, ChinaXinjiang Key Laboratory of Solid-State Physics and Devices, School of Physics Science and Technology, Xinjiang University, Urumqi 830046, ChinaXinjiang Key Laboratory of Solid-State Physics and Devices, School of Physics Science and Technology, Xinjiang University, Urumqi 830046, ChinaCenter for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, ChinaFlexible wearable electronic devices have found widespread applications in health monitoring and human–machine interaction. Piezoelectric sensors, capable of converting mechanical stress into electrical signals, serve as critical components in these systems. In this study, we enhanced the piezoelectric performance of PVDF-based composite materials through MoS<sub>2</sub> incorporation. Experimental results demonstrated that MoS<sub>2</sub> addition effectively increased the β-phase content in PVDF, achieving a maximum value of 70.0% at an optimal MoS<sub>2</sub> concentration of 0.75 wt%. Density functional theory (DFT) calculations revealed that while β-phase PVDF possesses slightly higher energy than other phases, it exhibits stronger adsorption interactions and enhanced charge transfer with MoS<sub>2</sub>, thereby promoting β-phase formation. The fabricated MoS<sub>2</sub>/PVDF composite nanofiber film maintained stable voltage output under repeated mechanical stress through 2000 operational cycles. When implemented as a body-mounted sensor, the composite material demonstrated exceptional responsiveness to human motions, confirming its practical potential for wearable electronics applications.https://www.mdpi.com/1424-8220/25/7/2085flexible electronic deviceselectrospinningMoS<sub>2</sub>/PVDF composite materialpiezoelectric performanceVESTA |
| spellingShingle | Rui Li Juqi Wang Aolin Li Quanbin Ma Shi Feng Bo Ran Lingling Zhang Exploring the Synergistic Effects of MoS<sub>2</sub> and PVDF for Advanced Piezoelectric Sensors: A First-Principles Approach Sensors flexible electronic devices electrospinning MoS<sub>2</sub>/PVDF composite material piezoelectric performance VESTA |
| title | Exploring the Synergistic Effects of MoS<sub>2</sub> and PVDF for Advanced Piezoelectric Sensors: A First-Principles Approach |
| title_full | Exploring the Synergistic Effects of MoS<sub>2</sub> and PVDF for Advanced Piezoelectric Sensors: A First-Principles Approach |
| title_fullStr | Exploring the Synergistic Effects of MoS<sub>2</sub> and PVDF for Advanced Piezoelectric Sensors: A First-Principles Approach |
| title_full_unstemmed | Exploring the Synergistic Effects of MoS<sub>2</sub> and PVDF for Advanced Piezoelectric Sensors: A First-Principles Approach |
| title_short | Exploring the Synergistic Effects of MoS<sub>2</sub> and PVDF for Advanced Piezoelectric Sensors: A First-Principles Approach |
| title_sort | exploring the synergistic effects of mos sub 2 sub and pvdf for advanced piezoelectric sensors a first principles approach |
| topic | flexible electronic devices electrospinning MoS<sub>2</sub>/PVDF composite material piezoelectric performance VESTA |
| url | https://www.mdpi.com/1424-8220/25/7/2085 |
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