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Aishwarya A, Adaval A, Mondal S, Dasgupta T, Bhattacharyya AR. Influence of H-bonding on the crystalline structures and ferroelectric and piezoelectric properties of novel nanogenerators of the lithium salt of 6-amino hexanoic acid incorporated poly(vinylidene fluoride) composites. Phys Chem Chem Phys 2024; 26:26314-26329. [PMID: 39380553 DOI: 10.1039/d4cp02497d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2024]
Abstract
The lithium salt of 6-amino hexanoic acid (Li-AHA) was melt-mixed with poly(vinylidene fluoride) (PVDF), wherein the Li-AHA concentration was varied between 1-15 wt% with the aim of establishing hydrogen bonding between the NH2 functionality of Li-AHA and the -CF2 moieties of PVDF. This was followed by compression-moulding as well as solution-casting to make PVDF/Li-AHA composite thin films. FTIR analysis established interactions between the -CF2 groups in PVDF with amine functional moieties of Li-AHA. Moreover, FTIR analysis estimated that the solution-cast PVDF/Li-AHA composite of 15 wt% Li-AHA exhibited the highest polar phase fraction of ∼60%. Furthermore, ferroelectric analysis showed that the solution-cast PVDF/Li-AHA composite of 15 wt% Li-AHA exhibited the highest remnant polarization of 0.07 μC cm-2 (at 50 Hz, 1000 V) from the polarization versus electric field loop. Finally, energy harvester devices were fabricated using compression-moulded and solution-cast PVDF/Li-AHA composite films, in which a maximum output voltage of ∼110 V was obtained in the solution-cast PVDF/Li-AHA composite of 15 wt% Li-AHA. The devices also displayed a maximum power density of 75 μW cm-2 and 85 μW cm-2 for those fabricated via compression-moulding and solution-casting, respectively. Three different capacitors were efficiently charged by the tapping of the devices made from solution-cast and compression-moulded composite films of 15 wt% Li-AHA. An interrelationship between processing, structure and properties was successfully established in the PVDF/Li-AHA composites with greatly enhanced piezoelectric properties.
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Affiliation(s)
- Ananya Aishwarya
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Akanksha Adaval
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Suvankar Mondal
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Titas Dasgupta
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Arup R Bhattacharyya
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
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Wang X, Zhao Z, Zhang M, Liang Y, Liu Y. Polyurethanes Modified by Ionic Liquids and Their Applications. Int J Mol Sci 2023; 24:11627. [PMID: 37511385 PMCID: PMC10380480 DOI: 10.3390/ijms241411627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/16/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
Polyurethane (PU) refers to the polymer containing carbamate groups in its molecular structure, generally obtained by the reaction of isocyanate and alcohol. Because of its flexible formulation, diverse product forms, and excellent performance, it has been widely used in mechanical engineering, electronic equipment, biomedical applications, etc. Through physical or chemical methods, ionic groups are introduced into PU, which gives PU electrical conductivity, flame-retardant, and antistatic properties, thus expanding the application fields of PU, especially in flexible devices such as sensors, actuators, and functional membranes for batteries and gas absorption. In this review, we firstly introduced the characteristics of PU in chemical and microphase structures and their related physical and chemical performance. To improve the performance of PU, ionic liquids (ILs) were applied in the processing or synthesis of PU, resulting in a new type of PU called ionic PU. In the following part of this review, we mainly summarized the fabrication methods of IL-modified PUs via physical blending and the chemical copolymerization method. Then, we summarized the research progress of the applications for IL-modified PUs in different fields, including sensors, actuators, transistors, antistatic films, etc. Finally, we discussed the future development trends and challenges faced by IL-modified PUs.
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Affiliation(s)
- Xue Wang
- State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Zhenjie Zhao
- State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Meiyu Zhang
- State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Yongri Liang
- State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Yingdan Liu
- State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China
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Mondal S, Thakur S, Maiti S, Bhattacharjee S, Chattopadhyay KK. Self-Charging Piezo-Supercapacitor: One-Step Mechanical Energy Conversion and Storage. ACS APPLIED MATERIALS & INTERFACES 2023; 15:8446-8461. [PMID: 36719930 DOI: 10.1021/acsami.2c17538] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
With the contemplations of ecological and environmental issues related to energy harvesting, piezoelectric nanogenerators (PNGs) may be an accessible, sustainable, and abundant elective wellspring of energy in the future. The PNGs' power output, however, is dependent on the mechanical energy input, which will be intermittent if the mechanical energy is not continuous. This is a fatal flaw for electronics that need continuous power. Here, a self-charging flexible supercapacitor (PSCFS) is successfully realized that can harvest sporadic mechanical energy, convert it to electrical energy, and simultaneously store power. Initially, chemically processed multimetallic oxide, namely, copper cobalt nickel oxide (CuCoNiO4) is amalgamated within the poly(vinylidene fluoride) (PVDF) framework in different wt % to realize high-performance PNGs. The combination of CuCoNiO4 as filler creates a notable electroactive phase inside the PVDF matrix, and the composite realized by combining 1 wt % CuCoNiO4 with PVDF, coined as PNCU 1, exhibits the highest electroactive phase (>86%). Under periodic hammering (∼100 kPa), PNGs fabricated with this optimized composite film deliver an instantaneous voltage of ∼67.9 V and a current of ∼4.15 μA. Furthermore, PNG 1 is ingeniously integrated into a supercapacitor to construct PSCFS, using PNCU 1 as a separator and CuCoNiO4 nanowires on carbon cloth (CC) as the positive and negative electrodes. The self-charging behavior of the rectifier-free storage device was established under bending deformation. The PSCFS device exhibits ∼845 mV from its initial open-circuit potential ∼35 mV in ∼220 s under periodic bending of 180° at a frequency of 1 Hz. The PSCFS can power up various portable electronic appliances such as calculators, watches, and LEDs. This work offers a high-performance, self-powered device that can be used to replace bulky batteries in everyday electronic devices by harnessing mechanical energy, converting mechanical energy from its environment into electrical energy.
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Affiliation(s)
- Suvankar Mondal
- Department of Physics, Jadavpur University, Kolkata700032, India
| | - Subhasish Thakur
- School of Materials Science and Nanotechnology, Jadavpur University, Kolkata700032, India
| | - Soumen Maiti
- St. Thomas College of Engineering & Technology, Kolkata700032, India
| | | | - Kalyan Kumar Chattopadhyay
- Department of Physics, Jadavpur University, Kolkata700032, India
- School of Materials Science and Nanotechnology, Jadavpur University, Kolkata700032, India
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Torres-Rodriguez J, E. Bedolla D, D’Amico F, Koopmann AK, Vaccari L, Saccomano G, Kohns R, Huesing N. Polyvinylidene Fluoride Aerogels with Tailorable Crystalline Phase Composition. Gels 2022; 8:gels8110727. [PMID: 36354635 PMCID: PMC9689208 DOI: 10.3390/gels8110727] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/02/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022] Open
Abstract
In this work, polyvinylidene fluoride (PVDF) aerogels with a tailorable phase composition were prepared by following the crystallization-induced gelation principle. A series of PVDF wet gels (5 to 12 wt.%) were prepared from either PVDF−DMF solutions or a mixture of DMF and ethanol as non-solvent. The effects of the non-solvent concentration on the crystalline composition of the PVDF aerogels were thoroughly investigated. It was found that the nucleating role of ethanol can be adjusted to produce low-density PVDF aerogels, whereas the changes in composition by the addition of small amounts of water to the solution promote the stabilization of the valuable β and γ phases. These phases of the aerogels were monitored by FTIR and Raman spectroscopies. Furthermore, the crystallization process was followed by in-time and in situ ATR−FTIR spectroscopy. The obtained aerogels displayed specific surface areas > 150 m2 g−1, with variable particle morphologies that are dependent on the non-solvent composition, as observed by using SEM and Synchrotron Radiation Computed micro-Tomography (SR-μCT).
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Affiliation(s)
- Jorge Torres-Rodriguez
- Chemistry and Physics of Materials, Paris-Lodron-University of Salzburg, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
- Salzburg Center for Smart Materials, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
| | - Diana E. Bedolla
- Elettra-Sincrotrone Trieste, SS14 Km 163.5, 34149 Trieste, Italy
- Area Science Park, Padriciano 99, 34149 Trieste, Italy
| | | | - Ann-Kathrin Koopmann
- Chemistry and Physics of Materials, Paris-Lodron-University of Salzburg, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
- Salzburg Center for Smart Materials, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
| | - Lisa Vaccari
- Elettra-Sincrotrone Trieste, SS14 Km 163.5, 34149 Trieste, Italy
| | - Giulia Saccomano
- Elettra-Sincrotrone Trieste, SS14 Km 163.5, 34149 Trieste, Italy
- Department of Engineering and Architecture, University of Trieste, Via Alfonso Valerio 6/1, 34127 Trieste, Italy
| | - Richard Kohns
- Chemistry and Physics of Materials, Paris-Lodron-University of Salzburg, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
- Salzburg Center for Smart Materials, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
| | - Nicola Huesing
- Chemistry and Physics of Materials, Paris-Lodron-University of Salzburg, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
- Salzburg Center for Smart Materials, Jakob Haringer-Str. 2A, 5020 Salzburg, Austria
- Correspondence:
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Xing G, Wu L, Kuang G, Ma T, Chen Z, Tao Y, Kang Y, Zhang S. Integration of high surface-energy electrochromic polymer with in-situ polymerized quasi-solid electrolyte for efficient electrochromism. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Liu Z, Wang H, Liu K, Li H, Sun X, Hu J, Wang S, Yuan C, Yan S. Ionic Liquid Assisted α–γ′ Phase Transition of Poly(vinylidene fluoride) Thin Films. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zixiong Liu
- Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, China
| | - Haijun Wang
- Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, China
| | - Kun Liu
- Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, China
| | - Huihui Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiaoli Sun
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jian Hu
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science and Technology, Qingdao City 266042, China
| | - Shaojuan Wang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science and Technology, Qingdao City 266042, China
| | - Chunlei Yuan
- Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, China
| | - Shouke Yan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science and Technology, Qingdao City 266042, China
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Yuan M, Wang H, Li H, Yuan C, Wang T, Yang H. Deep Eutectic Solvent—A Novel Additive to Induce Gamma Crystallization and Alpha‐to‐Gamma Phase Transition of PVDF. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202100416] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Muhua Yuan
- Shaanxi University of Science and Technology Xi'an Shaanxi 710021 China
| | - Haijun Wang
- Shaanxi University of Science and Technology Xi'an Shaanxi 710021 China
| | - Huihui Li
- State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029 China
| | - Chunlei Yuan
- Shaanxi University of Science and Technology Xi'an Shaanxi 710021 China
| | - Tong Wang
- Shaanxi University of Science and Technology Xi'an Shaanxi 710021 China
| | - Haibo Yang
- Shaanxi University of Science and Technology Xi'an Shaanxi 710021 China
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Wang Y, Wang H, Liu K, Wang T, Yuan C, Yang H. Effect of dehydrofluorination reaction on structure and properties of PVDF electrospun fibers. RSC Adv 2021; 11:30734-30743. [PMID: 35498925 PMCID: PMC9041349 DOI: 10.1039/d1ra05667k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 09/04/2021] [Indexed: 11/21/2022] Open
Abstract
Piezoelectric nanosensors were prepared with a novel type of dehydrofluorinated poly(vinylidene fluoride) (PVDF) nanofibrous membrane. With the synergistic effect of the dehydrofluorination reaction and applied high voltage electric field, the piezoelectric and energy storage properties of fibrous membranes attained great improvement. It was found that the simultaneous introduction of conjugated double bonds to the backbone of PVDF which was accompanied with the elimination of HF, resulted in the decrease of its molecular weight, solution viscosity and hydrophobicity. The crystalline phase, diameter, piezoelectric and energy storage properties of electro-spun PVDF nanofiber membranes significantly depend on the degree of HF elimination in dehydrofluorinated PVDF. The dehydrofluorinated PVDF with 5 hours of reaction exhibits the highest discharged energy density (Wrec) and energy storage efficiency (η), but excessive dehydrofluorination reaction is unfavorable to the energy storage properties. In addition, the dehydrofluorinated PVDF fiber membrane-based nanosensor possesses a larger electrical throughput (open circuit voltage of 30 V, which is three time that of the untreated PVDF), indicating that the introduction of double bonds can also improve the piezoelectric properties of PVDF nanofibers. A piezoelectric nanosensor was prepared with a novel type of dehydrofluorinated poly(vinylidene fluoride) (PVDF) nanofibrous membrane.![]()
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Affiliation(s)
- Yuxin Wang
- Shaanxi University of Science and Technology Xi'an 710021 Shaanxi China
| | - Haijun Wang
- Shaanxi University of Science and Technology Xi'an 710021 Shaanxi China
| | - Kun Liu
- Shaanxi University of Science and Technology Xi'an 710021 Shaanxi China
| | - Tong Wang
- Shaanxi University of Science and Technology Xi'an 710021 Shaanxi China
| | - Chunlei Yuan
- Shaanxi University of Science and Technology Xi'an 710021 Shaanxi China
| | - Haibo Yang
- Shaanxi University of Science and Technology Xi'an 710021 Shaanxi China
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Wang Q, Liang X, Wu C, Wang N, Liu S, Zuo Z, Gao Y. Temperature dependence and correlation of polarization processes in P(VDF-HFP) films. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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