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Zheng Y, Li J, Xu T, Cui H, Li X. Triboelectric Nanogenerator for Droplet Energy Harvesting Based on Hydrophobic Composites. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5439. [PMID: 37570143 PMCID: PMC10419362 DOI: 10.3390/ma16155439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 07/29/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023]
Abstract
Triboelectric nanogenerators (TENG) have shown great potential in harvesting energy from water. For the TENG that harvests water energy, surface hydrophobicity is crucial for its performance. In this paper, we prepare a hydrophobic composite film of Polyvinylidene Fluoride/Polydimethylsiloxane/Polytetrafluoroethylene (PVDF/PDMS/PTFE) and an electrode of Polyaniline/Carbon nanotubes/Silver nanowires (PANI/CNTs/AgNWs) by electrospinning technology and a doping method, respectively, which are served as the friction layer and top electrode of TENG. The contact angle of the hydrophobic film and electrode both reach over 120°, which makes the separation process between water and the interface complete and promotes the output of TENG. The open-circuit voltage (Voc) and short-circuit current (Isc) can reach 150 V and 60 μA approximately. In addition, the composite electrode can be applied in the preparation of complex electrode shapes. Furthermore, the different reactions of TENG to different liquids indicate that it may contribute to liquid-type sensing systems. This work presents an efficient approach to fabricating hydrophobic films and electrodes, laying a foundation for the development of TENG for harvesting water energy.
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Affiliation(s)
- Yang Zheng
- College of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China; (Y.Z.); (J.L.); (T.X.); (H.C.)
| | - Jingjing Li
- College of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China; (Y.Z.); (J.L.); (T.X.); (H.C.)
| | - Tiantian Xu
- College of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China; (Y.Z.); (J.L.); (T.X.); (H.C.)
| | - Hongzhi Cui
- College of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China; (Y.Z.); (J.L.); (T.X.); (H.C.)
| | - Xiaoyi Li
- College of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China; (Y.Z.); (J.L.); (T.X.); (H.C.)
- Key Laboratory for Special Functional Materials of Ministry of Education, School of Materials Science and Engineering, Henan University, Kaifeng 475004, China
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Tan C, Xu R, Zhang Q. Revisiting Contact Electrification at Polymer-Liquid Interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:11882-11891. [PMID: 36122176 DOI: 10.1021/acs.langmuir.2c01376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Contact electrification (CE) occurs naturally at all interfaces between solids and solids, solids and liquids, solids and gasses, and so forth. It has been extensively studied for decades. While CE at a solid-solid interface has been demonstrated to be primarily caused by electron transfer, the underlying mechanism of CE at a liquid-solid interface remains controversial. In this paper, the CE process between polyethylene terephthalate (PET) and different inorganic solutions at different temperatures is studied to investigate the charge transfer mechanism. The observed temperature-CE charge relationship falls into two categories, that is, the general case and the special case. In the general case, the CE charge first increases negatively and then positively with the temperature. The CE charge increasing negatively could result from enhanced electron transfer at the interface, while the CE charge increasing positively may be caused by increasing adsorption of cations, which neutralize the negative charges on the PET surface. In contrast, the CE charge first increases positively and then negatively with the temperature in the special case. The CE charge increasing positively could be attributed to more cations being attracted to the negatively charged PET surface, while the charge increasing negatively may be caused by more anions being attracted to the PET due to enhanced cation adsorption. Supported by the surface charge and dynamic charge transfer at different PET-solution interfaces and solution temperatures, our study provides a plausible interpretation of the temperature-dependent CE at the polymer-liquid interfaces.
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Affiliation(s)
- Chen Tan
- National Junior College, Singapore 288913, Singapore
- Centre of Micro-/Nanoelectronics (CMNE), School of Electrical and Electronic Engineering Nanyang Technological University, Singapore 639798, Singapore
| | - Ran Xu
- Centre of Micro-/Nanoelectronics (CMNE), School of Electrical and Electronic Engineering Nanyang Technological University, Singapore 639798, Singapore
| | - Qing Zhang
- Centre of Micro-/Nanoelectronics (CMNE), School of Electrical and Electronic Engineering Nanyang Technological University, Singapore 639798, Singapore
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Xiong Y, Han J, Wang Y, Wang ZL, Sun Q. Emerging Iontronic Sensing: Materials, Mechanisms, and Applications. RESEARCH (WASHINGTON, D.C.) 2022; 2022:9867378. [PMID: 36072274 PMCID: PMC9414182 DOI: 10.34133/2022/9867378] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 07/12/2022] [Indexed: 11/06/2022]
Abstract
Iontronic sensors represent a novel class of soft electronics which not only replicate the biomimetic structures and perception functions of human skin but also simulate the mechanical sensing mechanism. Relying on the similar mechanism with skin perception, the iontronic sensors can achieve ion migration/redistribution in response to external stimuli, promising iontronic sensing to establish more intelligent sensing interface for human-robotic interaction. Here, a comprehensive review on advanced technologies and diversified applications for the exploitation of iontronic sensors toward ionic skins and artificial intelligence is provided. By virtue of the excellent stretchability, high transparency, ultrahigh sensitivity, and mechanical conformality, numerous attempts have been made to explore various novel ionic materials to fabricate iontronic sensors with skin-like perceptive properties, such as self-healing and multimodal sensing. Moreover, to achieve multifunctional artificial skins and intelligent devices, various mechanisms based on iontronics have been investigated to satisfy multiple functions and human interactive experiences. Benefiting from the unique material property, diverse sensing mechanisms, and elaborate device structure, iontronic sensors have demonstrated a variety of applications toward ionic skins and artificial intelligence.
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Affiliation(s)
- Yao Xiong
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Han
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yifei Wang
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhong Lin Wang
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta GA 30332, USA
| | - Qijun Sun
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning 530004, China
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