1
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He Q, Briscoe J. Piezoelectric Energy Harvester Technologies: Synthesis, Mechanisms, and Multifunctional Applications. ACS APPLIED MATERIALS & INTERFACES 2024; 16:29491-29520. [PMID: 38739105 PMCID: PMC11181286 DOI: 10.1021/acsami.3c17037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 03/25/2024] [Accepted: 04/09/2024] [Indexed: 05/14/2024]
Abstract
Piezoelectric energy harvesters have gained significant attention in recent years due to their ability to convert ambient mechanical vibrations into electrical energy, which opens up new possibilities for environmental monitoring, asset tracking, portable technologies and powering remote "Internet of Things (IoT)" nodes and sensors. This review explores various aspects of piezoelectric energy harvesters, discussing the structural designs and fabrication techniques including inorganic-based energy harvesters (i.e., piezoelectric ceramics and ZnO nanostructures) and organic-based energy harvesters (i.e., polyvinylidene difluoride (PVDF) and its copolymers). The factors affecting the performance and several strategies to improve the efficiency of devices have been also explored. In addition, this review also demonstrated the progress in flexible energy harvesters with integration of flexibility and stretchability for next-generation wearable technologies used for body motion and health monitoring devices. The applications of the above devices to harvest various forms of mechanical energy are explored, as well as the discussion on perspectives and challenges in this field.
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Affiliation(s)
- Qinrong He
- School
of Engineering and Material Science, Queen
Mary University of London, London E1 4NS, the United
Kindom
| | - Joe Briscoe
- School
of Engineering and Material Science, Queen
Mary University of London, London E1 4NS, the United
Kindom
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2
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Huang C, Li H, Teng Z, Luo Y, Chen W. MOF-modified dendrite-free gel polymer electrolyte for zinc-ion batteries. RSC Adv 2024; 14:15337-15346. [PMID: 38741973 PMCID: PMC11089459 DOI: 10.1039/d4ra02200a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 04/29/2024] [Indexed: 05/16/2024] Open
Abstract
Zinc-ion batteries are promising candidates for large-scale energy storage, and gel polymer electrolytes (GPEs) play an important role in zinc-ion battery applications. Metal-organic frameworks (MOFs) are characterized by large specific surface areas and ordered pores. This highly ordered microporous structure provides a continuous transport channel for ions, thus realizing the high-speed transmission of ions. In this paper, an MOF-modified dendrite-free GPE was designed. The incorporation of MOF particles not only reduces the crystallinity of the polymer, increases the motility of the molecular chains, and facilitates the transfer of Zn2+, but also attracts anions to reduce polarization during electrochemical reactions. It was shown that this MOF-modified gel polymer electrolyte has a higher ionic conductivity compared to other PVDF-based polymer electrolytes (approximate range of 2 × 10-4 to 3 × 10-3 S cm-1), with a very high conductivity (1.63 mS cm-1) even at -20 °C. The Zn/Zn symmetric cell could maintain operation for more than 3600 h at a current density of 1 mA cm-2, and SEM showed that the MOF-modified gel electrolyte had uniform Zn2+ deposition.
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Affiliation(s)
- Changmiao Huang
- School of Materials Science and Engineering, Wuhan University of Technology Wuhan 430070 China
| | - Hui Li
- School of Materials Science and Engineering, Wuhan University of Technology Wuhan 430070 China
| | - Zixuan Teng
- School of Materials Science and Engineering, Wuhan University of Technology Wuhan 430070 China
| | - Yushu Luo
- School of Materials Science and Engineering, Wuhan University of Technology Wuhan 430070 China
| | - Wanyu Chen
- School of Materials Science and Engineering, Wuhan University of Technology Wuhan 430070 China
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3
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Jiang J, Wan L, Li L, Li P. High-Performance Piezoelectric Nanogenerator of BTO-PVDF Nanofibers for Wearable Sensing. Macromol Rapid Commun 2024; 45:e2300619. [PMID: 38232954 DOI: 10.1002/marc.202300619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 12/21/2023] [Indexed: 01/19/2024]
Abstract
Piezoelectric nanogenerator (PENG) produces stable electrical signals in response to external mechanical stimuli and holds promise in the fields of flexible sensors and smart wearable devices. In practice, a high-performance PENG with a straightforward structure and exceptional reliability is deeply desired. This study optimally synthesizes piezoelectric composites comprising polyvinylidene fluoride (PVDF) incorporated with barium titanate (BTO) nanoparticles (NPs) and fabricated a PENG with heightened sensitivity by using the electrospinning technique. The polar β-phase content of the dual-optimized BTO-PVDF (barium titanate and polyvinylidene fluoride) electrospun fiber reaches up to 82.39%. In the bending mode, it achieves a remarkable maximum open-circuit voltage of 19.152 V, a transferred charge of 8.058 nC, and an output voltage per unit area of 2.128 V cm- 2. Under vertical pressure conditions, the BP-PENG exhibits an impressive voltage of 12.361 V while the force is 2.156 N, demonstrating a notable pressure sensing sensitivity of 5.159 V kPa-1, with an excellent linear relationship. Furthermore, the BP-PENG displays sensitive sensing features in monitoring hand movements. The sensitive response and high performance make it promising for applications in human motion monitoring and smart wearable devices.
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Affiliation(s)
- Jiang Jiang
- Center on Nanoenergy Research, Institute of Science and Technology for Carbon Peak & Neutrality, Key Laboratory of Blue Energy and Systems Integration (Guangxi University), Education Department of Guangxi Zhuang Autonomous Region, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Physical Science & Technology, Guangxi University, Nanning, 530004, China
| | - Lingyu Wan
- Center on Nanoenergy Research, Institute of Science and Technology for Carbon Peak & Neutrality, Key Laboratory of Blue Energy and Systems Integration (Guangxi University), Education Department of Guangxi Zhuang Autonomous Region, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Physical Science & Technology, Guangxi University, Nanning, 530004, China
| | - Liuyan Li
- Division of Electrical and Magnetic Metrology & Test, Guangxi Institute of Metrology and Test, Nanning, 530004, China
| | - Ping Li
- Center on Nanoenergy Research, Institute of Science and Technology for Carbon Peak & Neutrality, Key Laboratory of Blue Energy and Systems Integration (Guangxi University), Education Department of Guangxi Zhuang Autonomous Region, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Physical Science & Technology, Guangxi University, Nanning, 530004, China
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4
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Omar AM, Hassan MH, Daskalakis E, Smith A, Dooghue J, Mirihanage W, Bartolo PJDS. Biomimetic dual sensing polymer nanocomposite for biomedical applications. Front Bioeng Biotechnol 2024; 12:1322753. [PMID: 38444647 PMCID: PMC10913024 DOI: 10.3389/fbioe.2024.1322753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 02/02/2024] [Indexed: 03/07/2024] Open
Abstract
There is a growing need for sensing materials that can provide multiple sensing capabilities for wearable devices, implantable sensors, and diagnostics tools. As complex human physiology requires materials that can simultaneously detect and respond to slow and fast pressure fluctuations. Mimicking the slow adaptive (SA) and fast adaptive (FA) mechanoreceptors in skin can lead to the development of dual sensing electrospun polymer nanocomposites for biomedical applications. These dual sensing nanocomposites can provide simultaneous sensing of both slow and fast pressure fluctuations, making them ideal for applications such as monitoring vital signs, detecting a wider range of movements and pressures. Here we develop a novel dual sensing PVDF-HFP-based nanocomposite that combines the advantages of capacitive and piezoelectric properties through controling electrospinning environment and processing parameters, polymer solution composition, and addition of nucleating agents such as Carbon Black (CB) to enhance the crystalline development of β-phase, fibre thickness, and morphology. The developed PVDF-HFP/CB nanocomposite presents and response to both slow and fast pressure fluctuations with high capacitance (5.37 nF) and output voltage (1.51 V) allowing for accurate and reliable measurements.
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Affiliation(s)
- Abdalla M. Omar
- Department of Mechanical, Aerospace, and Civil Engineering, University of Manchester, Manchester, United Kingdom
| | - Mohamed H. Hassan
- Department of Mechanical, Aerospace, and Civil Engineering, University of Manchester, Manchester, United Kingdom
- Singapore Centre for 3D Printing (SC3DP), School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
| | - Evangelos Daskalakis
- Department of Mechanical, Aerospace, and Civil Engineering, University of Manchester, Manchester, United Kingdom
- Singapore Centre for 3D Printing (SC3DP), School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
| | | | | | - Wajira Mirihanage
- Department of Materials, The University of Manchester, Manchester, United Kingdom
| | - Paulo J. D. S. Bartolo
- Department of Mechanical, Aerospace, and Civil Engineering, University of Manchester, Manchester, United Kingdom
- Singapore Centre for 3D Printing (SC3DP), School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
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5
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Chen Z, Sun Z, Fan Y, Yin M, Jin C, Guo B, Yin Y, Quan R, Zhao S, Han S, Cheng X, Liu W, Chen B, Xiao Z, Dai J, Zhao Y. Mimicked Spinal Cord Fibers Trigger Axonal Regeneration and Remyelination after Injury. ACS NANO 2023; 17:25591-25613. [PMID: 38078771 DOI: 10.1021/acsnano.3c09892] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
Spinal cord injury (SCI) causes tissue structure damage and composition changes of the neural parenchyma, resulting in severe consequences for spinal cord function. Mimicking the components and microstructure of spinal cord tissues holds promise for restoring the regenerative microenvironment after SCI. Here, we have utilized electrospinning technology to develop aligned decellularized spinal cord fibers (A-DSCF) without requiring synthetic polymers or organic solvents. A-DSCF preserves multiple types of spinal cord extracellular matrix proteins and forms a parallel-oriented structure. Compared to aligned collagen fibers (A-CF), A-DSCF exhibits stronger mechanical properties, improved enzymatic stability, and superior functionality in the adhesion, proliferation, axonal extension, and myelination of differentiated neural progenitor cells (NPCs). Notably, axon extension or myelination has been primarily linked to Agrin (AGRN), Laminin (LN), or Collagen type IV (COL IV) proteins in A-DSCF. When transplanted into rats with complete SCI, A-DSCF loaded with NPCs improves the survival, maturation, axon regeneration, and motor function of the SCI rats. These findings highlight the potential of structurally and compositionally biomimetic scaffolds to promote axonal extension and remyelination after SCI.
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Affiliation(s)
- Zhenni Chen
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zheng Sun
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yongheng Fan
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Man Yin
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chen Jin
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bo Guo
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yanyun Yin
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Rui Quan
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shuaijing Zhao
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shuyu Han
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaokang Cheng
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Weiyuan Liu
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bing Chen
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Zhifeng Xiao
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jianwu Dai
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Yannan Zhao
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
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6
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Chen Y, Huang Z, Hu F, Peng J, Huang T, Liu X, Luo C, Xu L, Yue K. Microstructured Polyfluoroacrylate Elastomeric Dielectric Layer for Highly Stretchable Wide-Range Capacitive Pressure Sensors. ACS APPLIED MATERIALS & INTERFACES 2023; 15:58700-58710. [PMID: 38065675 DOI: 10.1021/acsami.3c14064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Capacitive pressure sensors capable of replicating human tactile senses have garnered tremendous attention. Introducing microstructures into the dielectric layer is an effective approach to improve the sensitivity of the sensors. However, most reported processes to fabricate microstructured dielectric layers are complicated and time-consuming and usually have adverse effects on the mechanical properties. Herein, we report a mechanically strong and highly stretchable dielectric layer fabricated from a microstructured fluorinated elastomer with a high dielectric constant (5.8 at 1000 Hz) via a simple and low-cost thermal decomposition process. Capacitive pressure sensors based on this microstructured fluorinated elastomer dielectric layer and soft ionotronic electrodes illustrate an impressing stretchability (>300%), a high pressure sensitivity (17 MPa-1), a wide detection range (70 Pa-800 kPa), and a fast response time (below 300 ms). Moreover, the multipixel capacitive pressure sensors sensing array maintains the unique spatial tactile sensing performance even under significant tensile deformation. It is believed that our microstructured fluorinated elastomer dielectric layer might find wide applications in stretchable ionotronic devices.
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Affiliation(s)
- Yutong Chen
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter South China University of Technology, Guangzhou 510640, China
| | - Zhenkai Huang
- School of Materials Science and Hydrogen Energy Foshan University, Foshan 528000, China
| | - Faqi Hu
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter South China University of Technology, Guangzhou 510640, China
| | - Jianping Peng
- School of Environmental and Chemical Engineering Foshan University, Foshan 528000, China
| | - Tianrui Huang
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter South China University of Technology, Guangzhou 510640, China
| | - Xiang Liu
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter South China University of Technology, Guangzhou 510640, China
| | - Chuan Luo
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter South China University of Technology, Guangzhou 510640, China
| | - Liguo Xu
- College of Light Chemical Industry and Materials Engineering Shunde Polytechnic, Foshan 528333, China
| | - Kan Yue
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter South China University of Technology, Guangzhou 510640, China
- Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices South China University of Technology, Guangzhou 510640, China
- Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology, Changzhou University, Changzhou 213164, Jiangsu, China
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7
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Gunasekhar R, Reza MS, Kim KJ, Prabu AA, Kim H. Electrospun PVDF/aromatic HBP of 4th gen based flexible and self-powered TENG for wearable energy harvesting and health monitoring. Sci Rep 2023; 13:22645. [PMID: 38114807 PMCID: PMC10730851 DOI: 10.1038/s41598-023-50231-z] [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: 09/13/2023] [Accepted: 12/17/2023] [Indexed: 12/21/2023] Open
Abstract
In recent times, high-performance wearable electronic devices that can transform mechanical force into electrical energy for biomedical monitoring applications are receiving an increasing amount of attention. In the present study, we focused on a flexible, self-powered and wearable triboelectric nanogenerator (TENG) based on electrospun polyvinylidene fluoride (PVDF)/aromatic hyperbranched polyester of 4th generation (Ar.HBP-G4, 0-40 wt.-% w.r.t. PVDF content) blend nanoweb as tribo-negative layer and melt-blown thermoplastic polyurethane (TPU) as tribo-positive layer for energy harvesting and human health monitoring applications. Among the varying Ar.HBP-G4 content used, incorporation of Ar.HBP-G4 (10 wt.-%) in PVDF (P-Ar.HBP-G4-10) showed higher increase in the triboelectric output voltage when compared to pristine PVDF and other Ar.HBP-G4 weight ratios. The optimized P-Ar.HBP-G4-10/TPU based TENG exhibited a peak-to-peak voltage (Vp-p) of 124.4 V under an applied load of 9.8 N and frequency 1 Hz which is superior to many other TENGs reported elsewhere. Higher triboelectric performance of P-Ar.HBP-G4 blend based TENG compared to that of neat PVDF is attributed to the effect of Ar.HBP-G4-10 in enhancing the degree of crystallinity and polar β-crystalline phase content (98.3%) in PVDF. The ability of the TENG to power up portable electronic devices is demonstrated when it is powered for 750 s while connected through a capacitor and a rectifier, and the TENG was able to operate 45 light-emitting diodes directly. Evaluation of the triboelectric output of the TENG device attached to different parts of the human body reveal significantly better output voltage and sensitivity for human health monitoring. The results of this work pave a new way to develop TENG based on P-Ar.HBP-G4 nanowebs for sustainable energy generation and wearable healthcare monitoring systems.
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Affiliation(s)
- Ramadasu Gunasekhar
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, 632014, India
| | - Mohammad Shamim Reza
- Department of Advanced Materials Engineering for Information and Electronics, College of Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do, 17104, Republic of Korea
| | - Kap Jin Kim
- Department of Advanced Materials Engineering for Information and Electronics, College of Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do, 17104, Republic of Korea
| | - Arun Anand Prabu
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, 632014, India.
| | - Hongdoo Kim
- Department of Advanced Materials Engineering for Information and Electronics, College of Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do, 17104, Republic of Korea.
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8
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Bhadwal N, Ben Mrad R, Behdinan K. Review of Piezoelectric Properties and Power Output of PVDF and Copolymer-Based Piezoelectric Nanogenerators. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:3170. [PMID: 38133067 PMCID: PMC10745407 DOI: 10.3390/nano13243170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/11/2023] [Accepted: 12/15/2023] [Indexed: 12/23/2023]
Abstract
The highest energy conversion efficiencies are typically shown by lead-containing piezoelectric materials, but the harmful environmental impacts of lead and its toxicity limit future use. At the bulk scale, lead-based piezoelectric materials have significantly higher piezoelectric properties when compared to lead-free piezoelectric materials. However, at the nanoscale, the piezoelectric properties of lead-free piezoelectric material can be significantly larger than the bulk scale. The piezoelectric properties of Poly(vinylidene fluoride) (PVDF) and Poly(vinylidene fluoride-co-trifluoroethylene) (PVDF-TrFE) lead-free piezoelectric nanomaterials are reviewed and their suitability for use in piezoelectric nanogenerators (PENGs) is determined. The impact of different PVDF/PVDF-TrFE composite structures on power output is explained. Strategies to improve the power output are given. Overall, this review finds that PVDF/PVDF-TrFE can have significantly increased piezoelectric properties at the nanoscale. However, these values are still lower than lead-free ceramics at the nanoscale. If the sole goal in developing a lead-free PENG is to maximize output power, lead-free ceramics at the nanoscale should be considered. However, lead-free ceramics are brittle, and thus encapsulation of lead-free ceramics in PVDF is a way to increase the flexibility of these PENGs. PVDF/PVDF-TrFE offers the advantage of being nontoxic and biocompatible, which is useful for many applications.
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Affiliation(s)
| | - Ridha Ben Mrad
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON M5S 3G8, Canada; (N.B.); (K.B.)
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9
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Yempally S, Magadia P, Ponnamma D. Effect of Zn-Fe 2O 3 nanomaterials on the phase separated morphologies of polyvinylidene fluoride piezoelectric nanogenerators. RSC Adv 2023; 13:33863-33874. [PMID: 38020024 PMCID: PMC10658217 DOI: 10.1039/d3ra03745b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Accepted: 11/02/2023] [Indexed: 12/01/2023] Open
Abstract
Self-powered devices based on piezoelectric nanogenerators (PENGs) are becoming crucial in the upcoming smart societies as they can integrate multifunctional applications, especially sensing, energy storage, etc. In this work, we explore the piezoelectric voltage generation happening in polyvinylidene fluoride (PVDF) nanocomposites developed by phase separation. The simple method adopted for the nanocomposite synthesis rules out the high voltage required for the normal electrospun PENGs and adds to their cost-effectiveness. Zinc-doped iron oxide (Zn-Fe2O3) nanomaterials influence the piezoelectric properties by enhancing the crystallinity and structural properties of the polymer. The phase separation process causes structural rearrangements within the PVDF by inducing the directional alignment of -CH2- and -CF2-chains and is the major reason for electroactive phase enhancement. Layers of Zn-Fe2O3 were uniformly distributed in the phase-separated PVDF without being negatively influenced by the solvent-non-solvent interactions during phase separation. At 3 wt%, the Zn-Fe2O3 induced an open circuit voltage of 0.41 volts, about 12 times greater than that of the neat PVDF film. Nanoparticles affected the thermal degradation and crystallinity of the polymer composites most effectively, and the dielectric properties of the PVDF/Zn-Fe2O3 composite microfilms were also pronounced. The proposed simple and cost-effective approach to flexible microfilm fabrication suggests significant applications in wearable electronics.
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Affiliation(s)
- Swathi Yempally
- Center for Advanced Materials, Qatar University P.O. Box 2713 Doha Qatar
| | - Patricia Magadia
- Chemical Engineering Department, College of Engineering, Qatar University 2713 Doha Qatar
| | - Deepalekshmi Ponnamma
- Materials Science and Technology Program, Department of Mathematics, Statistics and Physics, College of Arts and Sciences, Qatar University 2713 Doha Qatar +974-50182442
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10
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Ali N, Kenawy ER, Wadoud AA, Elhadary MI. Wearable Electrospun Piezoelectric Mats Based on a PVDF Nanofiber-ZnO@ZnS Core-Shell Nanoparticles Composite for Power Generation. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2833. [PMID: 37947679 PMCID: PMC10648488 DOI: 10.3390/nano13212833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 10/26/2022] [Indexed: 11/12/2023]
Abstract
This work adopted a strategy to use new functional high-performance piezoelectric materials for sustainable energy production in wearable self-powered electrical devices. An innovative modification in electrospinning was used to produce highly aligned nanofibers. In the nanogenerator, the flexible membrane constituents were tunefully combined. The novel composite nanofibers were made of Poly (vinylidene fluoride) PVDF, loaded with ZnO@ZnS core-shell nanoparticles to achieve a non-brittle performance of the hetero nanoparticles and piezoelectric polymer. A nanofiber mat was inserted between two thermoplastic sheets with conductive electrodes for application in wearable electronic devices. Complete spectroscopic analyses were performed to characterize the nanofiber's material composition. It is shown that the addition of 10 wt % ZnO@ZnS core-shell nanoparticles significantly improved the piezoelectric properties of the nanofibers and simultaneously kept them flexible due to the exceedingly resilient nature of the composite. The superior performance of the piezoelectric parameter of the nanofibrous mats was due to the crystallinity (polar β phase) and surface topography of the mat. The conversion sensitivity of the PVDF device recorded almost 0.091 V/N·mm3, while that of the PVDF-10 wt % ZnO@ZnS composite mat recorded a sensitivity of 0.153 V/N·mm3, which is higher than many flexible nano-generators. These nanogenerators provide a simple, efficient, and cost-effective solution to microelectronic wearable devices.
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Affiliation(s)
- Nehal Ali
- Department of Engineering Physics and Mathematics, Faculty of Engineering, Tanta University, Tanta 31527, Egypt
| | - El-Refaie Kenawy
- Polymer Research Group, Department of Chemistry, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - A. A. Wadoud
- Atomic Reactors Department, Egyptian Atomic Energy Authority, Inshas, Cairo 13759, Egypt
| | - M. I. Elhadary
- Department of Mechanical Power Engineering, Faculty of Engineering, Tanta University, Tanta 31527, Egypt
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11
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Costa CM, Cardoso VF, Martins P, Correia DM, Gonçalves R, Costa P, Correia V, Ribeiro C, Fernandes MM, Martins PM, Lanceros-Méndez S. Smart and Multifunctional Materials Based on Electroactive Poly(vinylidene fluoride): Recent Advances and Opportunities in Sensors, Actuators, Energy, Environmental, and Biomedical Applications. Chem Rev 2023; 123:11392-11487. [PMID: 37729110 PMCID: PMC10571047 DOI: 10.1021/acs.chemrev.3c00196] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Indexed: 09/22/2023]
Abstract
From scientific and technological points of view, poly(vinylidene fluoride), PVDF, is one of the most exciting polymers due to its overall physicochemical characteristics. This polymer can crystalize into five crystalline phases and can be processed in the form of films, fibers, membranes, and specific microstructures, being the physical properties controllable over a wide range through appropriate chemical modifications. Moreover, PVDF-based materials are characterized by excellent chemical, mechanical, thermal, and radiation resistance, and for their outstanding electroactive properties, including high dielectric, piezoelectric, pyroelectric, and ferroelectric response, being the best among polymer systems and thus noteworthy for an increasing number of technologies. This review summarizes and critically discusses the latest advances in PVDF and its copolymers, composites, and blends, including their main characteristics and processability, together with their tailorability and implementation in areas including sensors, actuators, energy harvesting and storage devices, environmental membranes, microfluidic, tissue engineering, and antimicrobial applications. The main conclusions, challenges and future trends concerning materials and application areas are also presented.
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Affiliation(s)
- Carlos M. Costa
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, 4710-057 Braga, Portugal
- Laboratory
of Physics for Materials and Emergent Technologies, LapMET, University of Minho, 4710-057 Braga, Portugal
- Institute
of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, 4710-057 Braga, Portugal
| | - Vanessa F. Cardoso
- CMEMS-UMinho, University of
Minho, DEI, Campus de
Azurém, 4800-058 Guimarães, Portugal
- LABBELS-Associate
Laboratory, Campus de
Gualtar, 4800-058 Braga, Guimarães, Portugal
| | - Pedro Martins
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, 4710-057 Braga, Portugal
- Laboratory
of Physics for Materials and Emergent Technologies, LapMET, University of Minho, 4710-057 Braga, Portugal
- Institute
of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, 4710-057 Braga, Portugal
| | | | - Renato Gonçalves
- Center of
Chemistry, University of Minho, 4710-057 Braga, Portugal
| | - Pedro Costa
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, 4710-057 Braga, Portugal
- Laboratory
of Physics for Materials and Emergent Technologies, LapMET, University of Minho, 4710-057 Braga, Portugal
- Institute
for Polymers and Composites IPC, University
of Minho, 4804-533 Guimarães, Portugal
| | - Vitor Correia
- CMEMS-UMinho, University of
Minho, DEI, Campus de
Azurém, 4800-058 Guimarães, Portugal
- LABBELS-Associate
Laboratory, Campus de
Gualtar, 4800-058 Braga, Guimarães, Portugal
| | - Clarisse Ribeiro
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, 4710-057 Braga, Portugal
- Laboratory
of Physics for Materials and Emergent Technologies, LapMET, University of Minho, 4710-057 Braga, Portugal
| | - Margarida M. Fernandes
- CMEMS-UMinho, University of
Minho, DEI, Campus de
Azurém, 4800-058 Guimarães, Portugal
- LABBELS-Associate
Laboratory, Campus de
Gualtar, 4800-058 Braga, Guimarães, Portugal
| | - Pedro M. Martins
- Institute
of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, 4710-057 Braga, Portugal
- Centre
of Molecular and Environmental Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Senentxu Lanceros-Méndez
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, 4710-057 Braga, Portugal
- Laboratory
of Physics for Materials and Emergent Technologies, LapMET, University of Minho, 4710-057 Braga, Portugal
- BCMaterials,
Basque Center for Materials, Applications
and Nanostructures, UPV/EHU
Science Park, 48940 Leioa, Spain
- Ikerbasque, Basque Foundation for Science, 48009 Bilbao, Spain
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12
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Priyadarshini BS, Mitra R, Manju U. Titania Nanoparticle-Stimulated Ultralow Frequency Detection and High-Pass Filter Behavior of a Flexible Piezoelectric Nanogenerator: A Self-Sustaining Energy Harvester for Active Motion Tracking. ACS APPLIED MATERIALS & INTERFACES 2023; 15:45812-45822. [PMID: 37733300 DOI: 10.1021/acsami.3c07413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
A significant driving force for the fabrication of IoT-compatible smart health gear integrated with multifunctional sensors is the growing trend in fitness and the overall wellness of the human body. In this work, we present an autonomous motion and activity-sensing device based on the efficacious nucleation of the polar β-phase in an electroactive polymer. Representatively, we investigate the nucleating effect of TiO2 nanoparticles on weight-modulated PVDF-HFP films (PT-5, PT-10, and PT-15) and subsequently prototype a sensing device with the film that demonstrates superior β-phase nucleation. The PT-10 film, with an optimal polar β-phase, shows the highest remnant polarization (2Pr) and energy density of 0.36 μC/cm2 and 22.3 mJ/cm3, respectively, at 60 kV/cm. The films mimic a high pass filter at frequencies above 10 KHz with very low impedance and high ac conductivity values. The frequency-dependent impedance studies reveal an effective interfacial polarization between TiO2 nanoparticles and PVDF-HFP, explicitly observed in the low-frequency region. Consequently, the sensor fabricated with PT-10 as the sensing layer exhibits ultralow frequency detection (25 Hz) resulting from the blood flow muscle oxygenation. The device successfully senses voluntary joint movements of the human body and actively tracks a range of motions, from brisk walking to running. Additionally, through repetitive human finger-tapping motion, the nanogenerator lights up multiple light-emitting diodes in series and charges capacitors of varying magnitudes under 50 s. The real-time human motion sensing and movement tracking modalities of the sensor hold promise in the arena of smart wearables, sports biomechanics, and contact-based medical devices.
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Affiliation(s)
- B Sheetal Priyadarshini
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, Odisha 751013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Rahul Mitra
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, Odisha 751013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Unnikrishnan Manju
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, Odisha 751013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
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13
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Yempally S, Kacem E, Ponnamma D. Influence of phase-separated structural morphologies on the piezo and triboelectric properties of polymer composites. DISCOVER NANO 2023; 18:93. [PMID: 37392317 DOI: 10.1186/s11671-023-03868-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 06/20/2023] [Indexed: 07/03/2023]
Abstract
Simplified and flexible fabrication methods, high output performance, and extreme flexibility of polymer-based nanocomposites represent versatile designs in self-powering devices for wearable electronics, sensors, and smart societies. Examples include polyvinylidene fluoride and its copolymers-based piezoelectric nanogenerators, green and recyclable triboelectric nanogenerators, etc. Advanced functionalities, multi-functional properties, and the extensive lifetime required for nanogenerators inspire researchers to focus on structural modifications of the polymeric materials, to fully exploit their performances. Phase separation is a physicochemical process in which polymeric phases rearrange, resulting in specific structures and properties, that ultimately influence mechanical, electronic, and other functional properties. This article will study the phase separation strategies used to modify the polymeric base, both physically and chemically, to generate the maximum electric power upon mechanical and frictional deformation. The effect of interfacial modification on the efficiency of the nanogenerators, chemical and mechanical stability, structural integrity, durable performance, and morphological appearance will be extensively covered in this review. Moreover, piezo- and triboelectric power generation have numerous challenges, such as poor resistance to mechanical deformation, reduced cyclic performance stability, and a high cost of production. These often depend on the method of developing the nanogenerators, and phase separation provides a unique advantage in reducing them. The current review provides a one-stop solution to understand and disseminate the phase separation process, types and mechanisms, advantages, and role in improving the piezoelectric and triboelectric performances of the nanogenerators.
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Affiliation(s)
- Swathi Yempally
- Center for Advanced Materials, Qatar University, P O Box 2713, Doha, Qatar
| | - Eya Kacem
- Materials Science and Technology Program, Department of Mathematics, Statistics and Physics, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar
| | - Deepalekshmi Ponnamma
- Materials Science and Technology Program, Department of Mathematics, Statistics and Physics, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar.
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14
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Chen X, Li H, Xu Z, Lu L, Pan Z, Mao Y. Electrospun Nanofiber-Based Bioinspired Artificial Skins for Healthcare Monitoring and Human-Machine Interaction. Biomimetics (Basel) 2023; 8:223. [PMID: 37366818 DOI: 10.3390/biomimetics8020223] [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: 04/27/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/28/2023] Open
Abstract
Artificial skin, also known as bioinspired electronic skin (e-skin), refers to intelligent wearable electronics that imitate the tactile sensory function of human skin and identify the detected changes in external information through different electrical signals. Flexible e-skin can achieve a wide range of functions such as accurate detection and identification of pressure, strain, and temperature, which has greatly extended their application potential in the field of healthcare monitoring and human-machine interaction (HMI). During recent years, the exploration and development of the design, construction, and performance of artificial skin has received extensive attention from researchers. With the advantages of high permeability, great ratio surface of area, and easy functional modification, electrospun nanofibers are suitable for the construction of electronic skin and further demonstrate broad application prospects in the fields of medical monitoring and HMI. Therefore, the critical review is provided to comprehensively summarize the recent advances in substrate materials, optimized fabrication techniques, response mechanisms, and related applications of the flexible electrospun nanofiber-based bio-inspired artificial skin. Finally, some current challenges and future prospects are outlined and discussed, and we hope that this review will help researchers to better understand the whole field and take it to the next level.
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Affiliation(s)
- Xingwei Chen
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Han Li
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Ziteng Xu
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Lijun Lu
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Zhifeng Pan
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Yanchao Mao
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
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15
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Ghobashy MM, F Abd El-Gawad A, A Fayek S, Farahat MA, Ismail MI, Elbarbary AM, I Sharshir A. Gamma irradiation induced surface modification of (PVC/HDPE)/ZnO nanocomposite for enhancing the oil removal and conductivity using COMSOL multiphysics. Sci Rep 2023; 13:7514. [PMID: 37160993 PMCID: PMC10170164 DOI: 10.1038/s41598-023-34583-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 05/03/2023] [Indexed: 05/11/2023] Open
Abstract
Blend nanocomposite film was prepared by loadings of irradiated ZnO in ratios of (5 wt%) inside the PVC/HDPE matrix using a hot-melt extruder technique. The physical and chemical properties of the irradiated and unirradiated ZnO samples are compared. The Vis-UV spectrum of ZnO shows an absorption peak at a wavelength of 373 nm that was slightly red-shifted to 375 nm for an irradiated sample of ZnO at a dose of 25 kGy due to the defect of crystal structure by the oxygen vacancy during gamma irradiations. This growth of the defect site leads to a decrease in energy gaps from 3.8 to 2.08 eV. AC conductivity of ZnO sample increased after the gamma irradiation process (25 kGy). The (PVC/HDPE)/ZnO nanocomposites were re-irradiated with γ rays at 25 kGy in the presence of four different media (silicon oil, sodium silicate, paraffin wax and water). FTIR and XRD were performed to monitor the changes in chemical composition. The new peak at 1723 cm-1 attributed to C=O groups was observed in irradiated (PVC/HDPE)ZnO samples at only sodium silicate and water media. This process induced new function groups on the surface of the (PVC/HDPE)/ZnO blend sample. This work aims to develop (PVC/HDPE)ZnO for oil/water separation. The highest oil adsorption capability was observed in samples functionalized by C=O groups based on the different tested oils. The results suggest that the surface characterization of the (PVC/HDPE)/ZnO can be modified to enhance the oil adsorption potential. Further, the gamma irradiation dose significantly enhanced the AC conductivity compared to the unirradiated sample. According to COMSOL Multiphysics, the irradiated sample (PVC/HDPE)ZnO in water shows perfect uniform electric field distribution in medium voltage cables (22.000 V).
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Affiliation(s)
- Mohamed Mohamady Ghobashy
- Radiation Research of Polymer Chemistry Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
| | - Amal F Abd El-Gawad
- Faculty of Engineering, Zagazig University, Zagazig, Egypt
- Faculty of Computers and Informatics, University Zagazig, Zagazig, Egypt
| | - S A Fayek
- Solid State and Accelerator Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
| | - M A Farahat
- Faculty of Engineering, Zagazig University, Zagazig, Egypt
| | - M I Ismail
- Faculty of Engineering, Zagazig University, Zagazig, Egypt
- Faculty of Engineering, Egypt University of Informatics, Cairo, Egypt
| | - Ahmed M Elbarbary
- Radiation Research of Polymer Chemistry Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
| | - A I Sharshir
- Solid State and Accelerator Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.
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16
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Bhadwal N, Ben Mrad R, Behdinan K. Review of Zinc Oxide Piezoelectric Nanogenerators: Piezoelectric Properties, Composite Structures and Power Output. SENSORS (BASEL, SWITZERLAND) 2023; 23:s23083859. [PMID: 37112200 PMCID: PMC10144910 DOI: 10.3390/s23083859] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/31/2023] [Accepted: 04/06/2023] [Indexed: 06/12/2023]
Abstract
Lead-containing piezoelectric materials typically show the highest energy conversion efficiencies, but due to their toxicity they will be limited in future applications. In their bulk form, the piezoelectric properties of lead-free piezoelectric materials are significantly lower than lead-containing materials. However, the piezoelectric properties of lead-free piezoelectric materials at the nano scale can be significantly larger than the bulk scale. This review looks at the suitability of ZnO nanostructures as candidate lead-free piezoelectric materials for use in piezoelectric nanogenerators (PENGs) based on their piezoelectric properties. Of the papers reviewed, Neodymium-doped ZnO nanorods (NRs) have a comparable piezoelectric strain constant to bulk lead-based piezoelectric materials and hence are good candidates for PENGs. Piezoelectric energy harvesters typically have low power outputs and an improvement in their power density is needed. This review systematically reviews the different composite structures of ZnO PENGs to determine the effect of composite structure on power output. State-of-the-art techniques to increase the power output of PENGs are presented. Of the PENGs reviewed, the highest power output belonged to a vertically aligned ZnO nanowire (NWs) PENG (1-3 nanowire composite) with a power output of 45.87 μW/cm2 under finger tapping. Future directions of research and challenges are discussed.
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17
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Li L, Peng F, Zheng G, Dai K, Liu C, Shen C. Electrospun Core-Sheath PVDF Piezoelectric Fiber for Sensing Application. ACS APPLIED MATERIALS & INTERFACES 2023; 15:15938-15945. [PMID: 36918291 DOI: 10.1021/acsami.2c20512] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
In recent years, piezoelectric polymer sensors are used in energy harvesting and self-powered sensing due to their flexibility, low density, and high piezoelectric constant, and their performances may be improved through a careful architectural design. Herein, we reported a facile strategy for fabricating core-sheath piezoelectric fiber (C-PEF) by directly electrospinning poly(vinylidene fluoride) (PVDF) onto the stainless steel wires. Such C-PEF can well respond to bending deformation with different degrees, and therefore it can be assembled into a piezoelectric bending sensor for airflow speed sensing. Furthermore, spring-like structured C-PEF (S-C-PEF) can serve as a piezoelectric spring sensor and in a sophisticated manner monitor human sleep behavior. This work paves a way for developing multigeometric piezoelectric sensors though a low-cost, facile, and reliable method, showing potential applications including bending sensing and health monitoring.
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Affiliation(s)
- Longfei Li
- College of Materials Science and Engineering, The Key Laboratory of Material Processing and Mold of Ministry of Education, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450000, P. R. China
| | - Fei Peng
- College of Materials Science and Engineering, The Key Laboratory of Material Processing and Mold of Ministry of Education, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450000, P. R. China
| | - Guoqiang Zheng
- College of Materials Science and Engineering, The Key Laboratory of Material Processing and Mold of Ministry of Education, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450000, P. R. China
| | - Kun Dai
- College of Materials Science and Engineering, The Key Laboratory of Material Processing and Mold of Ministry of Education, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450000, P. R. China
| | - Chuntai Liu
- College of Materials Science and Engineering, The Key Laboratory of Material Processing and Mold of Ministry of Education, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450000, P. R. China
| | - Changyu Shen
- College of Materials Science and Engineering, The Key Laboratory of Material Processing and Mold of Ministry of Education, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450000, P. R. China
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18
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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: 1] [Impact Index Per Article: 1.0] [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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19
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Mallick Z, Gupta V, Jain A, Bera C, Mandal D. Utilizing Strain-Engineered Stable Halide Perovskite for Interfacial Interaction with Molecular Dipoles To Enhance Ferroelectric Switching and Piezoresponse in Polymer Composite Nanofibers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:320-333. [PMID: 36525568 DOI: 10.1021/acs.langmuir.2c02556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Mechanical and solar to electrical energy conversion using piezo- and ferroelectric and photovoltaic effects may be a practical answer to the rising energy demand. In this quest, piezoelectric polymer poly(vinylidene fluoride-hexafluoroproylene) (P(VDF-HFP)) has gained interest due to its superior piezo- and ferroelectricity. In photovoltaic applications, inorganic halide perovskite (IHP) of CsPbI3 is considered a prime model compound. However, its application is limited because of the photoactive perovskite phase instability at ambient conditions. Here, we report the in situ synthesis of the stable perovskite γ-CsPbI3 through an electrospinning process at room temperature, encapsulated within a ferroelectric copolymer poly(vinylidene fluoride-hexafluoroproylene) (P(VDF-HFP)) as a composite nanofiber. Computational calculation using density functional theory (DFT) reveals that tensile strain plays a critical role in the dynamical stabilization of γ-CsPbI3. This tensile strain is triggered by the electrospinning process, which aids in the formation and growth of γ-CsPbI3. In the CsPbI3-P(VDF-HFP) composite nanofiber, γ-CsPbI3 nucleates the polar β-crystalline phase in P(VDF-HFP), which results in the intrinsic piezo- and ferroelectric characteristics. The γ-CsPbI3 aids in preferable molecular dipole orientation, resulting in improved nanoscale piezo- and ferroelectric properties. The composite nanofiber features a higher piezoelectric d33 magnitude (∼30 pm/V) and lower decay constant for polarized domains (τcomposite ≈ 17). The composite was utilized as a piezoelectric nanogenerator to demonstrate human physiological motion monitoring in self-power mode. The relevant pressure sensitivities of 81 and 40 mV/kPa for the low-pressure (<0.6 kPa) and high-pressure (>0.6 to 12 kPa) ranges, respectively, promise its suitability in the health care sector.
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Affiliation(s)
- Zinnia Mallick
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali140306, Punjab, India
| | - Varun Gupta
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali140306, Punjab, India
| | - Ayushi Jain
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali140306, Punjab, India
| | - Chandan Bera
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali140306, Punjab, India
| | - Dipankar Mandal
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali140306, Punjab, India
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20
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Fluoropolymer Membranes for Membrane Distillation and Membrane Crystallization. Polymers (Basel) 2022; 14:polym14245439. [PMID: 36559805 PMCID: PMC9782556 DOI: 10.3390/polym14245439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/01/2022] [Accepted: 12/03/2022] [Indexed: 12/15/2022] Open
Abstract
Fluoropolymer membranes are applied in membrane operations such as membrane distillation and membrane crystallization where hydrophobic porous membranes act as a physical barrier separating two phases. Due to their hydrophobic nature, only gaseous molecules are allowed to pass through the membrane and are collected on the permeate side, while the aqueous solution cannot penetrate. However, these two processes suffer problems such as membrane wetting, fouling or scaling. Membrane wetting is a common and undesired phenomenon, which is caused by the loss of hydrophobicity of the porous membrane employed. This greatly affects the mass transfer efficiency and separation efficiency. Simultaneously, membrane fouling occurs, along with membrane wetting and scaling, which greatly reduces the lifespan of the membranes. Therefore, strategies to improve the hydrophobicity of membranes have been widely investigated by researchers. In this direction, hydrophobic fluoropolymer membrane materials are employed more and more for membrane distillation and membrane crystallization thanks to their high chemical and thermal resistance. This paper summarizes different preparation methods of these fluoropolymer membrane, such as non-solvent-induced phase separation (NIPS), thermally-induced phase separation (TIPS), vapor-induced phase separation (VIPS), etc. Hydrophobic modification methods, including surface coating, surface grafting and blending, etc., are also introduced. Moreover, the research advances on the application of less toxic solvents for preparing these membranes are herein reviewed. This review aims to provide guidance to researchers for their future membrane development in membrane distillation and membrane crystallization, using fluoropolymer materials.
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21
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Ngadong S, Chekke T, Narzary R, Bayan S, Das U. Metal oxide nanocomposite based flexible nanogenerator: synergic effect of light and pressure. NANOTECHNOLOGY 2022; 34:045403. [PMID: 36240725 DOI: 10.1088/1361-6528/ac9a56] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 10/14/2022] [Indexed: 06/16/2023]
Abstract
Here, we report the fabrication of nanocomposite comprising of CuO and poly (vinylidene fluoride-hexafluoro propylene) (PVDF-HFP) for application in flexible piezoelectric nanogenerators (PENG). The chemically grown CuO nanostructures have been characterized through electron microscopy, x-ray diffraction, and spectroscopic techniques. It has been found that the incorporation of optimal CuO nanostructures in PVDF-HFP can increase the output voltage of the PENG by 22 times and is assigned to the increment in the effective dielectric constant of host PVDF-HFP. Further, the nanogenerator exhibits a maximum power of ∼20μW cm-2at 3 MΩ load and can charge a capacitor under continuous bio-mechanical impart. Further, upon slight alteration of the device configuration, the output of the nanocomposite-based nanogenerator can be enhanced under illumination condition. The increment in overall piezopotential through photoexcitation in optically active CuO nanostructures can be assigned to the increment in output voltage. The wavelength dependent output variation reveal the maximum output of the PENG under blue light. Further, under white light illumination, the nanogenerator exhibits a maximum power which is 3 times higher than in dark condition and can charge a capacitor 52 times faster. The development of such superior flexible and optically active nanogenerators are quite promising for futuristic self-powered devices operated under mechanical and solar energies.
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Affiliation(s)
- Soni Ngadong
- Department of Physics, Rajiv Gandhi University, Arunachal Pradesh, 791112, India
- Indira Gandhi Government College, Tezu, Arunachal Pradesh, 792001, India
| | - Tani Chekke
- Department of Physics, Rajiv Gandhi University, Arunachal Pradesh, 791112, India
| | - Ringshar Narzary
- Department of Physics, Rajiv Gandhi University, Arunachal Pradesh, 791112, India
| | - Sayan Bayan
- Department of Physics, Rajiv Gandhi University, Arunachal Pradesh, 791112, India
| | - Upamanyu Das
- Department of Physics, Rajiv Gandhi University, Arunachal Pradesh, 791112, India
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22
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Enhanced electroactive phase, dielectric properties and tuning of bandgap in Ho3+ modified PVDF-HFP composite films. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03318-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Nguyen T, Bavarian M, Nejati S. Correlating the Macrostructural Variations of an Ion Gel with Its Carbon Dioxide Sorption Capacity. MEMBRANES 2022; 12:1087. [PMID: 36363642 PMCID: PMC9694987 DOI: 10.3390/membranes12111087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
We report on a direct correlation between the macroscale structural variations and the gas sorption capacities of an ion gel. Here, we chose 1-ethyl-3-methylimidazolium bis(trifluoromethyl sulfonyl)imide ([Emim][TF2N]) and poly(vinylidene fluoride)-co-hexafluoropropylene (PVDF-HFP) as the ionic liquid and host polymer, respectively. The CO2 sorption in the thin films of the IL-polymer was measured using the gravimetric method. The results of our experiment showed that the trend in CO2 uptake of these mixtures was nonlinearly correlated with the content of IL. Here, we highlight that the variations in the molecular structure of the polymers were the main reason behind the observed trend. The presented data suggested the possibility of using the composition of mixtures containing IL and polymers to realize a synergistic gain for gas sorption in these mixtures.
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Wang Y, Hong M, Venezuela J, Liu T, Dargusch M. Expedient secondary functions of flexible piezoelectrics for biomedical energy harvesting. Bioact Mater 2022; 22:291-311. [PMID: 36263099 PMCID: PMC9556936 DOI: 10.1016/j.bioactmat.2022.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 10/01/2022] [Accepted: 10/03/2022] [Indexed: 11/22/2022] Open
Abstract
Flexible piezoelectrics realise the conversion between mechanical movements and electrical power by conformally attaching onto curvilinear surfaces, which are promising for energy harvesting of biomedical devices due to their sustainable body movements and/or deformations. Developing secondary functions of flexible piezoelectric energy harvesters is becoming increasingly significant in recent years via aiming at issues that cannot be addressed or mitigated by merely increasing piezoelectric efficiencies. These issues include loose interfacial contact and pucker generation by stretching, power shortage or instability induced by inadequate mechanical energy, and premature function degeneration or failure caused by fatigue fracture after cyclic deformations. Herein, the expedient secondary functions of flexible piezoelectrics to mitigate above issues are reviewed, including stretchability, hybrid energy harvesting, and self-healing. Efforts have been devoted to understanding the state-of-the-art strategies and their mechanisms of achieving secondary functions based on piezoelectric fundamentals. The link between structural characteristic and function performance is unravelled by providing insights into carefully selected progresses. The remaining challenges of developing secondary functions are proposed in the end with corresponding outlooks. The current work hopes to help and inspire future research in this promising field focusing on developing the secondary functions of flexible piezoelectric energy harvesters.
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Affiliation(s)
- Yuan Wang
- Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, Brisbane, Queensland, 4072, Australia,Corresponding author.
| | - Min Hong
- Centre for Future Materials, University of Southern Queensland, Springfield, Queensland, 4300, Australia
| | - Jeffrey Venezuela
- Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Ting Liu
- Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Matthew Dargusch
- Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, Brisbane, Queensland, 4072, Australia,Corresponding author.
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25
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Hwang HY, Baek H, Yi GC, Jho YD. Nanoscale mapping of surface strain in tapered nanorods using confocal photoluminescence spectroscopy. NANOTECHNOLOGY 2022; 33:485703. [PMID: 35998510 DOI: 10.1088/1361-6528/ac8bd9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
The strain occurs spontaneously at the heterogeneous interfaces of virtually all crystalline materials. Consequently, the analysis across multiple interfaces requires a complementary characterization scheme with a resolution that fits the deformation scale. By implementing two-photon confocal laser scanning nanoscopy with an axial resolution of 10 nm, we extract the surface strain from the photoluminescence (PL) spectra, epitomized by a 2-fold enhancement at the tapered tips in comparison to the substrate of ZnO nanorods. We firstly traced the well-established contribution from quantum confinement (QC) to PL shift in three geometrically classified regions: (I) a strongly tapered region where the diameter increases from 3 to 20 nm; (II) a weakly tapered region with a gradually increasing diameter from 20 to 58 nm; (III) round cylindrical region interfacing the sapphire substrate. The measured PL shift influenced by the deformation is significantly stronger than the attained QC effect. Particularly, surface strain at the strongly tapered region turned out to drastically increase the PL shift which matches well with the analysis based on the surface to volume ratio incorporating mechanical parameters such as the compliance tensor component, strain dislocation constant, and surface stress. The surface strain increased at a lower temperature, further disclosing its inherent dependence on the thermal expansion coefficients in clear contrast to the temperature-invariant characteristics of QC.
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Affiliation(s)
- Hyeong-Yong Hwang
- Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, United Kingdom
| | - Hyeonjun Baek
- Department of Physics, Sogang University, Seoul 04107, Republic of Korea
| | - Gyu-Chul Yi
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of Korea
| | - Young-Dahl Jho
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
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26
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Wang S, Ding C, Tian H, Huang W, Zhang Q. Double-layer Composite Gel Polymer Electrolyte for Organic Sodium-metal Batteries. Chem Asian J 2022; 17:e202200688. [PMID: 36070981 DOI: 10.1002/asia.202200688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 09/06/2022] [Indexed: 11/12/2022]
Abstract
Organic cathode materials have the advantages of abundant raw materials, high theoretical specific capacity, controllable structure and easy recycling. Pyrene-4,5,9,10-tetraone (PTO), as one of the typical organic cathode materials, achieves efficient storage and release of Na + . However, its good solubility in traditional organic liquid electrolytes is detrimental to the cyclic stability of batteries. To address this issue, the double-layer composite gel polymer electrolyte (DLCGPE) consisting of poly (ionic liquid) gel polymer electrolyte and plastic crystal electrolyte was developed and applied to organic sodium-metal batteries. This as-prepared DLCGPE displays an ionic conductivity of 2.17×10 -4 S cm -1 and an electrochemical window of 4.8 V. The as-fabricated sodium-symmetric batteries maintain interfacial stability after 500 h of cycling. Furthermore, the PTO/Na batteries could also retain a specific capacity of 201 mAh g -1 after 300 cycles, confirming that DLCGPE achieves the purpose of inhibiting PTO dissolution and maintaining batteries stability. This work broadens the application of asymmetric electrolytes in organic secondary battery.
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Affiliation(s)
- Shaolong Wang
- Yanshan University, School of Environmental and Chemical Engineering, CHINA
| | - Chaojian Ding
- Yanshan University, School of Environmental and Chemical Engineering, CHINA
| | - Hao Tian
- Yanshan University, School of Environmental and Chemical Engineering, CHINA
| | - Weiwei Huang
- Yanshan University, School of Environmental and Chemical Engineering, CHINA
| | - Qichun Zhang
- City University of Hong Kong, Department of Physics and Materials Science, 83 Tat Chee Ave, Kowloon Tong, 999077, Hong Kong, HONG KONG
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27
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Cui W, Fan T, Li Y, Wang X, Liu X, Lu C, Ramakrishna S, Long YZ. Robust functional Janus nanofibrous membranes for efficient harsh environmental air filtration and oil/water separation. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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28
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A M, J SK, T S, Mahendrakar S, Mettu MR, M VR, M JR. Investigation of conductivity, SEM, XRD studies of Mg 2+ ion based TiO 2 nanocomposite PVDF-HFP polymer electrolyte and application in a dye sensitized solar cell. JOURNAL OF POLYMER ENGINEERING 2022. [DOI: 10.1515/polyeng-2021-0306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The potential effect of nano TiO2 in poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) based polymer electrolyte and their application in a dye sensitized solar cell have been investigated. The solution casting process was used for fabrication of nano TiO2 loaded in Mg
2+
ion based PVDF-HFP solid polymer electrolyte (SPE), and characterized using conductivity, scanning electron microscopy (SEM), X-ray diffraction (XRD) and photovoltaic studies. XRD investigations reveal the broadening of specific peaks, which shows the occurrence of α, β and γ polymorphous phase transitions that commence the amorphous character and ion mobility. The SEM pictures revealed an interconnecting network of micro-porous nature, and an average diameter of the pores of ∼0.38 µm was obtained by using Gaussian curve fitting. Ion transport is facilitated by the high concentration of pores, which is responsible for the efficient absorption of a significant amount of electrolyte. The photovoltaic characteristics of dye sensitized solar cell (DSSC) estimated efficiency (η) is 9.9999%, and the fill factor is 0.84. Furthermore, the stability performance of the nanocomposite polymer electrolyte was improved and sufficient for use over an extended length of time, suggesting potential applications as a separator in solid state ionic conductors.
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Affiliation(s)
- Mallikarjun A
- Department of Physics , JNTUH, Kukatpally , Hyderabad , Telangana , India
- Department of Physics , Vignan’s Institute of Management and Technology for Women , Hyderabad , Telangana , India
| | - Siva Kumar J
- Department of Physics , Osmania University , Hyderabad , Telangana , India
| | - Sreekanth T
- Department of Physics , JNTUH, Kukatpally , Hyderabad , Telangana , India
| | - Sangeetha Mahendrakar
- Department of Physics , Guru Nanak Institutions Technical Campus , Ibrahimpatnam , Hyderabad, Telangana, India
| | - Maheshwar Reddy Mettu
- Department of Physics , Osmania University , Hyderabad , Telangana , India
- Department of Science and Humanities , Sreenidhi Institute of Science and Technology , Hyderabad , Telangana , India
| | - Vikranth Reddy M
- Indian Institute of Chemical Technology (CSIR-IICT) , Hyderabad, Telangana, India
| | - Jaipal Reddy M
- Department of Physics , Palamur University , Mahabubnagar , Telangana , India
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29
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Fu H, Long Z, Lai M, Cao J, Zhou R, Gong J, Chen Y. Quantum Dot Hybridization of Piezoelectric Polymer Films for Non-Transfer Integration of Flexible Biomechanical Energy Harvesters. ACS APPLIED MATERIALS & INTERFACES 2022; 14:29934-29944. [PMID: 35730788 DOI: 10.1021/acsami.2c07297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This work presents a low-temperature engineering strategy, from quantum dot (QD) synthesis to fabrication of a hybrid from a homogeneous dispersion to thermal annealing with elaborate use of a small organic molecule dopamine, for achieving a kind of ZnO QD-hybridized piezoelectric polymer film directly integrated into a flexible electrode and a plastic substrate. This strategy is the key for non-transfer assembly of flexible piezoelectric nanogenerators (FPENGs) with both mechanical robustness and high electrical performance via direct lamination. The rational addition of dopamine plays multiple roles of (1) significantly decreasing the size of ZnO particles to a QD level (3.77 nm), (2) formation of a stable and homogeneous dispersion of a ZnO QDs/piezoelectric polyvinylidene fluoride-co-hexafluoropropylene copolymer for uniform hybridization of a piezoelectric film, and (3) increment of the piezoelectric phase via induced crystallization at a low annealing temperature. This dopamine-assisted low-temperature annealing strategy for a hybrid piezoelectric film with a high d33 value (∼31.56 pC/N, 30.56% larger than that of a pure piezoelectric polymer film) required no additional high-voltage polarization treatment and effectively avoided the delamination, distortion, or melt phenomenon between the piezoelectric layer, flexible electrode, and plastic protective layer caused by the high temperature and thermal stress. The obtained FPENGs showed significantly enhanced output performance and mechanical robustness under repeated impact and large amounts of strain conditions. Their specific output voltage and charge density were stably maintained at 7.16 V and 2.40 nC/cm2, which were 30.7 and 50.0% higher than those of FPENGs based on a pure piezoelectric polymer film, respectively. They were further used as biomechanical energy harvesters for generating electricity to charge capacitor energy storage devices for power electronics and self-powered sensors for visual motion-detecting systems, indicating their promising applications in both wearable technology and smart homes.
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Affiliation(s)
- Haiyan Fu
- Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang 330022, China
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China
- Jiangxi Key Laboratory of Advanced Materials and Applications for Solar Cells, Xinyu University, Xinyu 338004, China
| | - Zuchang Long
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China
| | - Mingxuan Lai
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China
| | - Junhao Cao
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China
| | - Rihui Zhou
- Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang 330022, China
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China
| | - Jianliang Gong
- Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang 330022, China
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China
| | - Yiwang Chen
- Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang 330022, China
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China
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30
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Shen D, Liu Y, Yu M, Kong F, Xin B, Liu Y. Bioinspired flexible and highly responsive PVDF-based humidity sensors for respiratory monitoring. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Bhatta S, Mitra R, Ramadoss A, Manju U. Enhanced voltage response in TiO 2nanoparticle-embedded piezoelectric nanogenerator. NANOTECHNOLOGY 2022; 33:335402. [PMID: 35533643 DOI: 10.1088/1361-6528/ac6df5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 05/09/2022] [Indexed: 06/14/2023]
Abstract
Poly (vinylidene fluoride) (PVDF) and its copolymers have piqued a substantial amount of research interest for its use in modern flexible electronics. The piezoelectricβ-phase of the polymers can be augmented with the addition of suitable fillers that promoteβ-phase nucleation. In this work, we report an improved output voltage response of poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) with the incorporation of 10 wt.% Titanium (IV) oxide nanoparticles into the polymer matrix. The nano-filler was dispersed in the polymer matrix to form nanocomposite films via the solution casting technique. X-ray Diffraction and Scanning Electron Microscopy measurements were performed to verify the structure and morphology of the films. Fourier Transform Infrared Spectroscopy revealed enhancement in theβ-phase nucleation from ∼15% to ∼36% with the addition of 10 wt.% titania nanoparticles. Thermogravimetric analysis and Differential Scanning Calorimetry results show improved thermal stability of the nanocomposite film, up to 345 °C, as compared to pristine PVDF-HFP. We also demonstrate a facile method for the fabrication of a piezoelectric nanogenerator withβ-PVDF-HFP/TiO2nanocomposite as an active layer. The outputs from the fabricated nanogenerator reached up to 8.89 V through human finger tapping motions, paving way for its potential use in the field of sensors, actuators, and self-sustaining flexible devices.
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Affiliation(s)
- Sheetal Bhatta
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh-201002, India
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, Odisha-751013, India
| | - Rahul Mitra
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh-201002, India
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, Odisha-751013, India
| | - Ananthakumar Ramadoss
- School for Advanced Research in Petrochemicals: Laboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Petrochemicals Engineering and Technology (CIPET), Bhubaneswar 751024, India
| | - Unnikrishnan Manju
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh-201002, India
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, Odisha-751013, India
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32
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Wang L, Chen Z, Zhang Y, Liu C, Yuan J, Liu Y, Ge W, Lin S, An Q, Feng Z. Synergistically active piezoelectrical H2O2 production composite film achieved from catalytically inert PVDF-HFP matrix and SiO2 fillers. Chem Asian J 2022; 17:e202200278. [PMID: 35596666 DOI: 10.1002/asia.202200278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 05/18/2022] [Indexed: 11/10/2022]
Abstract
Local and decentralized H 2 O 2 production via piezoelectrical process promise smart biological utilization as well as environmental benefits. However, stable, bio/environmental- safe, and easily applied H 2 O 2 generation materials are still lacking. Here we report a novel flexible H 2 O 2 generation polymeric film composed of catalytically inert PVDF-HFP (Poly(vinylidene fluoride-co-hexafluoropropylene)) matrix and SiO 2 nanoparticle fillers. The film is bio-/environmentally benign at resting states, but effectively produces H 2 O 2 upon ultrasonic motivation at a production rate of 492 μmol [[EQUATION]] in one hour. Experimental and simulation methods in combination indicate that the effective H 2 O 2 generation capabilities stem from the synergistic existence of piezoelectrical fields and the air-liquid-solid three-phase regions around the porous film. The chemical conversions are motivated by the adsorbed charges. The silicon hydroxyl groups properly stabilize the *OOH intermediate and facilitate the chemical conversions of 2e - ORR of ambient O 2 . We expect the report to inspire H 2 O 2 piezoelectrical generation materials and promote the novel production strategies of H 2 O 2 as well as piezoelectrical functional materials.
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Affiliation(s)
- Lingchao Wang
- China University of Geosciences Beijing, School of Materials Science and Technology, 29th Xueyuan Road, 100083, Beijing, CHINA
| | - Zhensheng Chen
- China University of Geosciences Beijing, School of Materials Science and Technology, 29th Xueyuan Road, 100083, Beijing, CHINA
| | - Yihe Zhang
- China University of Geosciences Beijing, School of Materials Science and Technology, 29th Xueyuan Road, 100083, CHINA
| | - Chao Liu
- China University of Geosciences Beijing, School of Materials Science and Technology, 29th Xueyuan Road, 100083, Beijing, CHINA
| | - Jinpeng Yuan
- China University of Geosciences Beijing, School of Materials Science and Technology, 29th Xueyuan Road, 100083, Beijing, CHINA
| | - Yulun Liu
- China University of Geosciences Beijing, School of Materials Science and Technology, 100083, Beijing, CHINA
| | - Weiyi Ge
- China University of Geosciences Beijing, School of Materials Science and Technology, 100083, Beijing, CHINA
| | - Sen Lin
- China University of Geosciences Beijing, School of Materials Science and Technology, 29th Xueyuan Road, 100083, Beijing, CHINA
| | - Qi An
- China University of Geosciences Beijing, School of materials sciences and engineering, 29th Xueyuan Road, 100083, Beijing, CHINA
| | - Zeguo Feng
- The First Medical Center of Chinese PLA General Hospital, Department of Pain, 100083, Beijing, CHINA
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Manchi P, Graham SA, Patnam H, Paranjape MV, Yu JS. High-Efficiency Poly(Vinylidene Fluoride-Co-Hexafluoropropylene) Loaded 3D Marigold Flower-Like Bismuth Tungstate Triboelectric Films for Mechanical Energy Harvesting and Sensing Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2200822. [PMID: 35419981 DOI: 10.1002/smll.202200822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/30/2022] [Indexed: 06/14/2023]
Abstract
Triboelectric nanogenerators (TENGs) are one of the most trending energy harvesting devices because of their efficient and simple mechanism in harvesting mechanical energy from the environment into electricity. Herein, ferroelectric and dielectric bismuth tungstate (Bi2 WO6 (BWO)) with a marigold flower-like structure is prepared via a hydrothermal method, which is embedded in poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), forming a PVDF-HFP/BWO composite polymer film (CPF) to fabricate TENGs. Generally, the ferroelectric materials exhibit a large piezoelectric coefficient, high electrostatic dipole moment, and high dielectric constant. The prepared PVDF-HFP/BWO CPF reveals a high polar crystalline β-phase which leads to enhanced piezoelectric and ferroelectric properties of the CPF, thus resulting in the increased electrical performance of the fabricated TENG. The electrical output performance of the proposed TENG is systematically investigated by varying the amount of BWO material embedded in the PVDF-HFP polymer. The fabricated PVDF-HFP/2.5 wt% BWO CPF-based TENG device exhibits the highest electrical output performance. Additionally, the robust test of the TENG device is conducted to investigate the electrical performance for long-term durability and mechanical stability. Finally, the proposed TENG is operated as a self-powered sensor, harvesting mechanical energy from daily life human activities, and powering various low-power portable electronics.
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Affiliation(s)
- Punnarao Manchi
- Department of Electronics and Information Convergence Engineering, Institute for Wearable Convergence Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-Si, Gyeonggi-do, 17104, Republic of Korea
| | - Sontyana Adonijah Graham
- Department of Electronics and Information Convergence Engineering, Institute for Wearable Convergence Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-Si, Gyeonggi-do, 17104, Republic of Korea
| | - Harishkumarreddy Patnam
- Department of Electronics and Information Convergence Engineering, Institute for Wearable Convergence Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-Si, Gyeonggi-do, 17104, Republic of Korea
| | - Mandar Vasant Paranjape
- Department of Electronics and Information Convergence Engineering, Institute for Wearable Convergence Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-Si, Gyeonggi-do, 17104, Republic of Korea
| | - Jae Su Yu
- Department of Electronics and Information Convergence Engineering, Institute for Wearable Convergence Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-Si, Gyeonggi-do, 17104, Republic of Korea
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Deng W, Zhou Y, Libanori A, Chen G, Yang W, Chen J. Piezoelectric nanogenerators for personalized healthcare. Chem Soc Rev 2022; 51:3380-3435. [PMID: 35352069 DOI: 10.1039/d1cs00858g] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The development of flexible piezoelectric nanogenerators has experienced rapid progress in the past decade and is serving as the technological foundation of future state-of-the-art personalized healthcare. Due to their highly efficient mechanical-to-electrical energy conversion, easy implementation, and self-powering nature, these devices permit a plethora of innovative healthcare applications in the space of active sensing, electrical stimulation therapy, as well as passive human biomechanical energy harvesting to third party power on-body devices. This article gives a comprehensive review of the piezoelectric nanogenerators for personalized healthcare. After a brief introduction to the fundamental physical science of the piezoelectric effect, material engineering strategies, device structural designs, and human-body centered energy harvesting, sensing, and therapeutics applications are also systematically discussed. In addition, the challenges and opportunities of utilizing piezoelectric nanogenerators for self-powered bioelectronics and personalized healthcare are outlined in detail.
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Affiliation(s)
- Weili Deng
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, USA. .,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Yihao Zhou
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, USA.
| | - Alberto Libanori
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, USA.
| | - Guorui Chen
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, USA.
| | - Weiqing Yang
- School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Jun Chen
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, USA.
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35
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Uchiyama S, Morinaga A, Tsutsumi H, Katayama Y. Tuning the Polarity of a Fibrous Poly(vinylidene fluoride- co-hexafluoropropylene)-Based Support for Efficient Water Electrolysis. ACS OMEGA 2022; 7:10077-10086. [PMID: 35382293 PMCID: PMC8973098 DOI: 10.1021/acsomega.1c06128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 02/14/2022] [Indexed: 06/14/2023]
Abstract
Water electrolysis under alkaline conditions is of interest due to the applicability of non-precious metal-based materials for electrocatalysts. However, the successful design and synthesis of earth-abundant and efficient catalysts for the oxygen evolution reaction (OER) remain a significant challenge. This work presents cost-effective and straightforward ways to improve the OER activity under alkaline conditions by activating the catalyst-support and reactant-support interaction. Micro/nano-sized fibrous poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP) was synthesized via simple and scalable electrospinning and subsequently coated with Cu by electroless deposition to obtain the electrocatalyst with a large specific surface area, enhanced mass transport, and high catalyst utilization. Scanning electron microscopy, infrared spectroscopy, and X-ray diffraction confirmed the successful synthesis of the series of Cu/PVdF-HFP fibrous catalysts with varied ferroelectric polarizability of the PVdF-HFP support in the order of stretch-anneal > anneal > stretch > without pre-treatment of the catalyst. The best OER activity was confirmed for the Cu/PVdF-HFP catalyst with stretch and annealed treatment among the catalysts tested, suggesting that both the reaction kinetics and energetics of stretch-annealed Cu/PVdF-HFP catalysts were optimal for the OER. The electron delocalization between Cu and PVdF-HFP substrates (electron transfer from Cu to the negatively charged (δ- eff) PVdF-HFP region at the Cu|PVdF-HFP interface) and the enhanced transport of reactive hydroxide species and/or the increase in the local pH by positively charged (δ+ eff) PVdF-HFP region concertedly accelerate the OER activity. The overall activity for the prototype water electrolyzer increased 10-fold with stretch-anneal treatment compared to the one without pre-treatment, highlighting the effect of tuning the catalyst-support and reactant-support interaction on improving the efficiency of the water electrolysis.
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36
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Sharma S, Shekhar Mishra S, Kumar RP, Yadav RM. Recent progress on polyvinylidene difluoride based nanocomposite: Applications in energy harvesting and sensing. NEW J CHEM 2022. [DOI: 10.1039/d2nj00002d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Discovered in 2006, Nanogenerators have attracted much attention as promising energy-harvesting devices. It harnesses energy by utilizing piezoelectric, pyroelectric thermoelectric properties of nanomaterials to produce electricity and have potential to...
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Muenwacha T, Weeranantanapan O, Chudapongse N, Diaz Sanchez FJ, Maensiri S, Radacsi N, Nuansing W. Fabrication of Piezoelectric Electrospun Termite Nest-like 3D Scaffolds for Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2021; 14:7684. [PMID: 34947288 PMCID: PMC8708465 DOI: 10.3390/ma14247684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/29/2021] [Accepted: 12/08/2021] [Indexed: 11/18/2022]
Abstract
A high piezoelectric coefficient polymer and biomaterial for bone tissue engineering- poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)-has been successfully fabricated into 3D scaffolds using the wet electrospinning method. Three-dimensional (3D) scaffolds have significant advantages for tissue engineering applications. Electrospinning is an advanced method and can fabricate 3D scaffolds. However, it has some limitations and is difficult to fabricate nanofibers into 3D shapes because of the low controllability of porosity and internal pore shape. The PVDF-HFP powders were dissolved in a mixture of acetone and dimethylformamide with a ratio of 1:1 at various concentrations of 10, 13, 15, 17, and 20 wt%. However, only the solutions at 15 and 17 wt% with optimized electrospinning parameters can be fabricated into biomimetic 3D shapes. The produced PVDF-HFP 3D scaffolds are in the cm size range and mimic the structure of the natural nests of termites of the genus Apicotermes. In addition, the 3D nanofiber-based structure can also generate more electrical signals than the conventional 2D ones, as the third dimension provides more compression. The cell interaction with the 3D nanofibers scaffold was investigated. The in vitro results demonstrated that the NIH 3T3 cells could attach and migrate in the 3D structures. While conventional electrospinning yields 2D (flat) structures, our bio-inspired electrospun termite nest-like 3D scaffolds are better suited for tissue engineering applications since they can potentially mimic native tissues as they have biomimetic structure, piezoelectric, and biological properties.
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Affiliation(s)
- Thanapon Muenwacha
- Institute of Science, School of Physics, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (T.M.); (S.M.)
- Thailand Center of Excellence in Physics (ThEP), Ministry of Higher Education, Science, Research and Innovation, Bangkok 10400, Thailand
| | - Oratai Weeranantanapan
- Institute of Science, School of Preclinical Sciences, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (O.W.); (N.C.)
- Center of Excellence on Advanced Functional Materials (CoE-AFM), Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Nuannoi Chudapongse
- Institute of Science, School of Preclinical Sciences, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (O.W.); (N.C.)
- Center of Excellence on Advanced Functional Materials (CoE-AFM), Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Francisco Javier Diaz Sanchez
- Institute for Materials and Processes, School of Engineering, The University of Edinburgh, Robert Stevenson Road, Edinburgh EH9 3FB, UK;
| | - Santi Maensiri
- Institute of Science, School of Physics, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (T.M.); (S.M.)
- Center of Excellence on Advanced Functional Materials (CoE-AFM), Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Research Network NANOTEC—SUT on Advanced Nanomaterials and Characterization, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Norbert Radacsi
- Institute for Materials and Processes, School of Engineering, The University of Edinburgh, Robert Stevenson Road, Edinburgh EH9 3FB, UK;
| | - Wiwat Nuansing
- Institute of Science, School of Physics, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (T.M.); (S.M.)
- Center of Excellence on Advanced Functional Materials (CoE-AFM), Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Research Network NANOTEC—SUT on Advanced Nanomaterials and Characterization, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
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Huang YJ, Chen YF, Hsiao PH, Lam TN, Ko WC, Luo MY, Chuang WT, Su CJ, Chang JH, Chung CF, Huang EW. In-Situ Synchrotron SAXS and WAXS Investigation on the Deformation of Single and Coaxial Electrospun P(VDF-TrFE)-Based Nanofibers. Int J Mol Sci 2021; 22:12669. [PMID: 34884475 PMCID: PMC8657938 DOI: 10.3390/ijms222312669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/01/2021] [Accepted: 11/18/2021] [Indexed: 11/17/2022] Open
Abstract
Coaxial core/shell electrospun nanofibers consisting of ferroelectric P(VDF-TrFE) and relaxor ferroelectric P(VDF-TrFE-CTFE) are tailor-made with hierarchical structures to modulate their mechanical properties with respect to their constituents. Compared with two single and the other coaxial membranes prepared in the research, the core/shell-TrFE/CTFE membrane shows a more prominent mechanical anisotropy between revolving direction (RD) and cross direction (CD) associated with improved resistance to tensile stress for the crystallite phase stability and good strength-ductility balance. This is due to the better degree of core/shell-TrFE-CTFE nanofiber alignment and the crystalline/amorphous ratio. The coupling between terpolymer P(VDF-TrFE-CTFE) and copolymer P(VDF-TrFE) is responsible for phase stabilization, comparing the core/shell-TrFE/CTFE with the pristine terpolymer. Moreover, an impressive collective deformation mechanism of a two-length scale in the core/shell composite structure is found. We apply in-situ synchrotron X-ray to resolve the two-length scale simultaneously by using the small-angle X-ray scattering to characterize the nanofibers and the wide-angle X-ray diffraction to identify the phase transformations. Our findings may serve as guidelines for the fabrication of the electrospun nanofibers used as membranes-based electroactive polymers.
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Affiliation(s)
- Yi-Jen Huang
- Department of Fiber and Composite Materials, Feng Chia University, Taichung 40724, Taiwan;
| | - Yi-Fan Chen
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
| | - Po-Han Hsiao
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (P.-H.H.); (M.-Y.L.); (E.-W.H.)
| | - Tu-Ngoc Lam
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (P.-H.H.); (M.-Y.L.); (E.-W.H.)
- Department of Physics, College of Education, Can Tho University, Can Tho City 900000, Vietnam
| | - Wen-Ching Ko
- Central Region Campus, Industrial Technology Research Institute, Nantou 54041, Taiwan;
| | - Mao-Yuan Luo
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (P.-H.H.); (M.-Y.L.); (E.-W.H.)
| | - Wei-Tsung Chuang
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan; (W.-T.C.); (C.-J.S.)
| | - Chun-Jen Su
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan; (W.-T.C.); (C.-J.S.)
| | - Jen-Hao Chang
- Department of Fiber and Composite Materials, Feng Chia University, Taichung 40724, Taiwan;
| | - Cho Fan Chung
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong 999077, China;
| | - E-Wen Huang
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; (P.-H.H.); (M.-Y.L.); (E.-W.H.)
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Karki S, Gohain MB, Yadav D, Ingole PG. Nanocomposite and bio-nanocomposite polymeric materials/membranes development in energy and medical sector: A review. Int J Biol Macromol 2021; 193:2121-2139. [PMID: 34780890 DOI: 10.1016/j.ijbiomac.2021.11.044] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 11/02/2021] [Accepted: 11/05/2021] [Indexed: 01/13/2023]
Abstract
Nanocomposite and bio-nanocomposite polymer materials/membranes have fascinated prominent attention in the energy as well as the medical sector. Their composites make them appropriate choices for various applications in the medical, energy and industrial sectors. Composite materials are subject of interest in the polymer industry. Different kinds of fillers, such as cellulose-based fillers, carbon black, clay nanomaterials, glass fibers, ceramic nanomaterial, carbon quantum dots, talc and many others have been incorporated into polymers to improve the quality of the final product. These results are dependent on a variety of factors; however, nanoparticle dispersion and distribution are major obstacles to fully using nanocomposites/bio-nanocomposites materials/membranes in various applications. This review examines the various nanocomposite and bio-nanocomposite materials applications in the energy and medical sector. The review also covers the variety of ways for increasing nanocomposite and bio-nanocomposite materials features, each with its own set of applications. Recent researches on composite materials have shown that polymeric nanocomposites and bio-nanocomposites are promising materials that have been intensively explored for many applications that include electronics, environmental remediation, energy, sensing (biosensor) and energy storage devices among other applications. In this review, we studied various nanocomposite and bio-nanocomposite materials, their controlling parameters to develop the product and examine their features and applications in the fields of energy and the medical sector.
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Affiliation(s)
- Sachin Karki
- Chemical Engineering Group, Engineering Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Moucham Borpatra Gohain
- Chemical Engineering Group, Engineering Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India
| | - Diksha Yadav
- Chemical Engineering Group, Engineering Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Pravin G Ingole
- Chemical Engineering Group, Engineering Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India.
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Pratihar S, Patra A, Sasmal A, Medda SK, Sen S. Enhanced dielectric, ferroelectric, energy storage and mechanical energy harvesting performance of ZnO-PVDF composites induced by MWCNTs as an additive third phase. SOFT MATTER 2021; 17:8483-8495. [PMID: 34586137 DOI: 10.1039/d1sm00854d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The present work highlights an attempt of fabricating a nanocomposite by the addition of multi-walled carbon nanotubes (MWCNTs) as a third phase into flexible ZnO-poly(vinylidene fluoride) (ZnO-PVDF) composites. MWCNTs played a very important role in distributing ZnO fillers in the PVDF matrix more homogeneously and increased the connection capability. Enhancement of the piezoelectric phase, dielectric permittivity, ferroelectric polarization, energy storage density and mechanical energy harvesting performance of ZnO-PVDF composites after the addition of MWCNTs was confirmed from the respective characterization studies. The sensing capability was demonstrated by the generation of ∼22 V ac output voltage through the application of human finger tapping on 15 wt% ZnO and a 0.1 wt% MWCNT-loaded PVDF (15PZNT) based composite film. The rectified voltage from the fabricated 15PZNT film was used to charge a 10-μF capacitor up to ∼3 V which was used for the illumination of 30 commercial LEDs. The maximum power density from the film was found to be 21.41 μW cm-2 at 4 MΩ load resistance. The effect of the addition of MWCNTs was also verified by simulation using COMSOL Multiphysics software.
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Affiliation(s)
- Shewli Pratihar
- Functional Materials and Devices Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata-700032, West Bengal, India.
| | - Aniket Patra
- Dipartimento di Fisica, Universita della Calabria, Rende-87036, Italy
| | - Abhishek Sasmal
- Functional Materials and Devices Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata-700032, West Bengal, India.
| | - Samar Kumar Medda
- Speciality Glass Technology Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata-700032, West Bengal, India
| | - Shrabanee Sen
- Functional Materials and Devices Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata-700032, West Bengal, India.
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Mahapatra SD, Mohapatra PC, Aria AI, Christie G, Mishra YK, Hofmann S, Thakur VK. Piezoelectric Materials for Energy Harvesting and Sensing Applications: Roadmap for Future Smart Materials. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2100864. [PMID: 34254467 PMCID: PMC8425885 DOI: 10.1002/advs.202100864] [Citation(s) in RCA: 98] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 05/17/2021] [Indexed: 05/21/2023]
Abstract
Piezoelectric materials are widely referred to as "smart" materials because they can transduce mechanical pressure acting on them to electrical signals and vice versa. They are extensively utilized in harvesting mechanical energy from vibrations, human motion, mechanical loads, etc., and converting them into electrical energy for low power devices. Piezoelectric transduction offers high scalability, simple device designs, and high-power densities compared to electro-magnetic/static and triboelectric transducers. This review aims to give a holistic overview of recent developments in piezoelectric nanostructured materials, polymers, polymer nanocomposites, and piezoelectric films for implementation in energy harvesting. The progress in fabrication techniques, morphology, piezoelectric properties, energy harvesting performance, and underpinning fundamental mechanisms for each class of materials, including polymer nanocomposites using conducting, non-conducting, and hybrid fillers are discussed. The emergent application horizon of piezoelectric energy harvesters particularly for wireless devices and self-powered sensors is highlighted, and the current challenges and future prospects are critically discussed.
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Affiliation(s)
- Susmriti Das Mahapatra
- Technology & Manufacturing GroupIntel Corporation5000 West Chandler BoulevardChandlerArizona85226USA
| | - Preetam Chandan Mohapatra
- Technology & Manufacturing GroupIntel Corporation5000 West Chandler BoulevardChandlerArizona85226USA
| | - Adrianus Indrat Aria
- Surface Engineering and Precision CentreSchool of AerospaceTransport and ManufacturingCranfield UniversityCranfieldMK43 0ALUK
| | - Graham Christie
- Institute of BiotechnologyDepartment of Chemical Engineering and BiotechnologyUniversity of CambridgeCambridgeCB2 1QTUK
| | - Yogendra Kumar Mishra
- Mads Clausen InstituteNanoSYDUniversity of Southern DenmarkAlsion 2Sønderborg6400Denmark
| | - Stephan Hofmann
- Division of Electrical EngineeringDepartment of EngineeringUniversity of CambridgeCambridgeCB2 1PZUK
| | - Vijay Kumar Thakur
- Biorefining and Advanced Materials Research CenterScotland's Rural College (SRUC)Kings BuildingsEdinburghEH9 3JGUK
- Department of Mechanical EngineeringSchool of EngineeringShiv Nadar UniversityDelhiUttar Pradesh201314India
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42
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Tohluebaji N, Thainiramit P, Putson C, Muensit N. Phase and Structure Behavior vs. Electromechanical Performance of Electrostrictive P(VDF-HFP)/ZnO Composite Nanofibers. Polymers (Basel) 2021; 13:polym13152565. [PMID: 34372168 PMCID: PMC8348512 DOI: 10.3390/polym13152565] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/24/2021] [Accepted: 07/28/2021] [Indexed: 11/18/2022] Open
Abstract
In this work, we improved the electromechanical properties, electrostrictive behavior and energy-harvesting performance of poly(vinylidenefluoridene-hexafluoropropylene) P(VDF-HFP)/zinc oxide (ZnO) composite nanofibers. The main factor in increasing their electromechanical performance and harvesting power based on electrostrictive behavior is an improved coefficient with a modified crystallinity phase and tuning the polarizability of material. These blends were fabricated by using a simple electrospinning method with varied ZnO contents (0, 5, 10, 15 and 20 wt%). The effects of the ZnO nanoparticle size and content on the phase transformation, dielectric permittivity, strain response and vibration energy harvesting were investigated. The characteristics of these structures were evaluated utilizing SEM, EDX, XRD, FT-IR and DMA. The electrical properties of the fabrication samples were examined by LCR meter as a function of the concentration of the ZnO and frequency. The strain response from the electric field was observed by the photonic displacement apparatus and lock-in amplifier along the thickness direction at a low frequency of 1 Hz. Moreover, the energy conversion behavior was determined by an energy-harvesting setup measuring the current induced in the composite nanofibers. The results showed that the ZnO nanoparticles’ component effectively achieves a strain response and the energy-harvesting capabilities of these P(VDF-HFP)/ZnO composites nanofibers. The electrostriction coefficient tended to increase with a higher ZnO content and an increasing dielectric constant. The generated current increased with the ZnO content when the external electric field was applied at a vibration of 20 Hz. Consequently, the ZnO nanoparticles dispersed into electrostrictive P(VDF-HFP) nanofibers, which offer a large power density and excellent efficiency of energy harvesting.
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Affiliation(s)
- Nikruesong Tohluebaji
- Faculty of Science and Technology, Princess of Naradhiwas University, Narathiwat 96000, Thailand;
- Division of Physical Science (Physics), Faculty of Science, Prince of Songkla University, Songkhla 90112, Thailand; (P.T.); (N.M.)
| | - Panu Thainiramit
- Division of Physical Science (Physics), Faculty of Science, Prince of Songkla University, Songkhla 90112, Thailand; (P.T.); (N.M.)
- Center of Excellence in Nanotechnology for Energy (CENE), Songkhla 90112, Thailand
| | - Chatchai Putson
- Division of Physical Science (Physics), Faculty of Science, Prince of Songkla University, Songkhla 90112, Thailand; (P.T.); (N.M.)
- Center of Excellence in Nanotechnology for Energy (CENE), Songkhla 90112, Thailand
- Correspondence:
| | - Nantakan Muensit
- Division of Physical Science (Physics), Faculty of Science, Prince of Songkla University, Songkhla 90112, Thailand; (P.T.); (N.M.)
- Center of Excellence in Nanotechnology for Energy (CENE), Songkhla 90112, Thailand
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Trevino JE, Mohan S, Salinas AE, Cueva E, Lozano K. Piezoelectric properties of
PVDF‐conjugated
polymer nanofibers. J Appl Polym Sci 2021. [DOI: 10.1002/app.50665] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Julio E. Trevino
- Department of Mechanical Engineering University of Texas Rio Grande Valley Edinburg Texas USA
| | - Swati Mohan
- Department of Chemistry University of Texas Rio Grande Valley Edinburg Texas USA
| | - Alexandra E. Salinas
- Department of Mechanical Engineering University of Texas Rio Grande Valley Edinburg Texas USA
| | - Emilia Cueva
- Department of Manufacturing Engineering University of Texas Rio Grande Valley Edinburg Texas USA
| | - Karen Lozano
- Department of Mechanical Engineering University of Texas Rio Grande Valley Edinburg Texas USA
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Chandran AM, Varun S, Mural PKS. Flexible electroactive
PVDF
/
ZnO
nanocomposite with high output power and current density. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25704] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Akash M. Chandran
- Materials Chemistry and Polymer Technology Group, Department of Chemical Engineering National Institute of Technology Calicut Kerala India
| | - S. Varun
- Materials Chemistry and Polymer Technology Group, Department of Chemical Engineering National Institute of Technology Calicut Kerala India
| | - Prasanna Kumar S. Mural
- Materials Chemistry and Polymer Technology Group, Department of Chemical Engineering National Institute of Technology Calicut Kerala India
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Xie F, Qian X, Li N, Cui D, Zhang H, Xu Z. In vitro and in vivo studies on the biocompatibility of a self-powered pacemaker with a flexible buckling piezoelectric vibration energy harvester for rats. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:800. [PMID: 34268413 PMCID: PMC8246189 DOI: 10.21037/atm-21-1707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 04/28/2021] [Indexed: 11/06/2022]
Abstract
Background Scavenging energy from biomechanical motions in vivo by energy converting devices, i.e., implantable harvesters, to obtain sustainable electrical energy is the ideal way to power implantable medical devices which require long term and continuous power supply. A novel self-powered cardiac pacemaker is designed to achieve self-powered pacing. The kinetic energy of the heart was collected by an implanted piezoelectric energy collector and supplied to the cardiac pacemaker, and then the cardiac tissue was stimulated by the pacing electrode pierced from the outside of the heart to realize effective pacing effect and self-powered pacing. In this study, we evaluated the stability and biocompatibility of our previously described flexible buckling piezoelectric vibration energy harvester in vitro and in vivo. The biocompatibility, in vivo stability, and safety of the self-powered pacemaker with a flexible flexion piezoelectric vibratory energy harvesting device prepared were analyzed by performing cell and in vivo animal experiments. Methods The MTT(3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay was used to detect the cell proliferation of H9C2 cells and HUVECs at 24, 48, and 72 hours. Computed tomography (CT) and cardiac ultrasound were used to evaluate the position and heart rate of pacemakers 12 weeks after implantation, and the changes of plasma biochemical indexes were detected by a biochemical detector. Results At 12 weeks after implantation, CT results showed that there were no changes in the position of the self-powered pacemaker. The device implanted into the thoracic cavity of rats demonstrated certain effects on cardiac function, while it did not have a significant effect on their blood biochemical indexes. Conclusions the flexible buckling piezoelectric vibratory energy collector did not produce adverse effects on the myocardial tissue or on the normal proliferation of myocardial cells.
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Affiliation(s)
- Feng Xie
- Department of Cardiovascular Surgery, Changhai Hospital, Naval Military Medical University, Shanghai, China
| | - Xiaoqing Qian
- School of Biomedical Engineering, Shanghai Jiaotong University, Shanghai, China.,Department of Instrument Science & Engineering, School of Electronic Information & Electrical Engineering, Shanghai Engineering Research Center for Intelligent Diagnosis & Treatment Instrument, Institute of Nano Biomedicine & Engineering, Shanghai Jiaotong University, Shanghai, China
| | - Ning Li
- Institute of Cardiothoracic Surgery at Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Daxiang Cui
- Department of Instrument Science & Engineering, School of Electronic Information & Electrical Engineering, Shanghai Engineering Research Center for Intelligent Diagnosis & Treatment Instrument, Institute of Nano Biomedicine & Engineering, Shanghai Jiaotong University, Shanghai, China
| | - Hao Zhang
- Institute of Cardiothoracic Surgery at Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Zhiyun Xu
- Department of Cardiovascular Surgery, Changhai Hospital, Naval Military Medical University, Shanghai, China.,Institute of Cardiothoracic Surgery at Changhai Hospital, Second Military Medical University, Shanghai, China
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Lam TN, Ma CY, Hsiao PH, Ko WC, Huang YJ, Lee SY, Jain J, Huang EW. Tunable Mechanical and Electrical Properties of Coaxial Electrospun Composite Nanofibers of P(VDF-TrFE) and P(VDF-TrFE-CTFE). Int J Mol Sci 2021; 22:4639. [PMID: 33924977 PMCID: PMC8124494 DOI: 10.3390/ijms22094639] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/26/2021] [Accepted: 04/26/2021] [Indexed: 11/17/2022] Open
Abstract
The coaxial core/shell composite electrospun nanofibers consisting of relaxor ferroelectric P(VDF-TrFE-CTFE) and ferroelectric P(VDF-TrFE) polymers are successfully tailored towards superior structural, mechanical, and electrical properties over the individual polymers. The core/shell-TrFE/CTFE membrane discloses a more prominent mechanical anisotropy between the revolving direction (RD) and cross direction (CD) associated with a higher tensile modulus of 26.9 MPa and good strength-ductility balance, beneficial from a better degree of nanofiber alignment, the increased density, and C-F bonding. The interfacial coupling between the terpolymer P(VDF-TrFE-CTFE) and copolymer P(VDF-TrFE) is responsible for comparable full-frequency dielectric responses between the core/shell-TrFE/CTFE and pristine terpolymer. Moreover, an impressive piezoelectric coefficient up to 50.5 pm/V is achieved in the core/shell-TrFE/CTFE composite structure. Our findings corroborate the promising approach of coaxial electrospinning in efficiently tuning mechanical and electrical performances of the electrospun core/shell composite nanofiber membranes-based electroactive polymers (EAPs) actuators as artificial muscle implants.
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Affiliation(s)
- Tu-Ngoc Lam
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 30013, Taiwan; (T.-N.L.); (C.-Y.M.); (P.-H.H.)
- Department of Physics, College of Education, Can Tho University, Can Tho City 900000, Vietnam
| | - Chia-Yin Ma
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 30013, Taiwan; (T.-N.L.); (C.-Y.M.); (P.-H.H.)
| | - Po-Han Hsiao
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 30013, Taiwan; (T.-N.L.); (C.-Y.M.); (P.-H.H.)
| | - Wen-Ching Ko
- Central Region Campus, Industrial Technology Research Institute, Nantou County 54041, Taiwan;
| | - Yi-Jen Huang
- Department of Fiber and Composite Materials, Feng Chia University, Taichung 40724, Taiwan;
| | - Soo-Yeol Lee
- Department of Materials Science and Engineering, Chungnam National University, Daejeon 34134, Korea;
| | - Jayant Jain
- Department of Materials Science and Engineering, Indian Institute of Technology, New Delhi 110016, India;
| | - E-Wen Huang
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 30013, Taiwan; (T.-N.L.); (C.-Y.M.); (P.-H.H.)
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El-Samak AA, Ponnamma D, Hassan MK, Adham S, Karim A, Ammar A, Alser M, Shurbaji S, Eltai NO, Al-Maadeed MAA. Multifunctional Oil Absorption with Macroporous Polystyrene Fibers Incorporating Silver-Doped ZnO. ACS OMEGA 2021; 6:8081-8093. [PMID: 33817467 PMCID: PMC8014922 DOI: 10.1021/acsomega.0c05683] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
Hydrophobic microporous polystyrene (PS) fibers are fabricated by a solvent-induced phase-separation-assisted electrospinning method. Zinc oxide (ZnO) and silver-doped zinc oxide (Ag-ZnO) nanomaterials with variable morphologies are added to the PS fibers, to investigate the influence of multifunctional nanofiller addition on the porosity and consequent oil-adsorbing properties for different oil types. The doping of silver as well as the uniformity in particle distribution are confirmed by scanning electron microscopy and the energy-dispersive spectral analyses. The porosity of the fibers and their crystallinity effect depend on the hydrophobicity and surface properties of these microporous nanofilled fibers. Ag-ZnO, specifically in 2 wt %, enhanced the pore size and distribution in PS porous fibers, thereby enhancing the oil-adsorbing property and its hydrophobicity. In-depth analysis of the oil adsorption mechanism is done for the fibers, both qualitatively and quantitatively, to demonstrate its correlation with the structural integrity of the fibers. The PS/2Ag-ZnO composite also exhibits the highest antibacterial performance against Staphylococcus aureus, a general indication of antibiological fouling properties of these oil-separating films. The antifouling/antibacterial activity of the nanoparticles and high oil sorption capacity of the highly porous PS composites show great potential for use in water-treatment-related applications.
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Affiliation(s)
- Ali A. El-Samak
- Center
for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar
| | | | - Mohammad K. Hassan
- Center
for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Samer Adham
- ConocoPhilips
Global Water Sustainability Center, Qatar
Science and Technology Park, P.O. Box
24750, Doha, Qatar
| | - Alamgir Karim
- Department
of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Ali Ammar
- Department
of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Maha Alser
- Biomedical
Research Center, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Samar Shurbaji
- Biomedical
Research Center, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Nahla O. Eltai
- Biomedical
Research Center, Qatar University, P.O. Box 2713, Doha, Qatar
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48
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Chary KS, Sharma AK, Kumbhar CS, Rao AG, Prasad CD, Panda HS. Fabrication and Transformation of K 0.5Na 0.5Nb 0.9Sb 0.1O 3 Nanostructures to Nanofibers in PVDF-HFP Matrix for Flexible Nanogenerator-Based Thermal Management in Heat Pipes. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05259] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Kammari Suresh Chary
- Naval Materials Research Laboratory, Ambernath, Thane-421506, India
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Girinagar, Pune-411025, India
| | - Akhilesh Kumar Sharma
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Girinagar, Pune-411025, India
| | | | | | | | - Himanshu Sekhar Panda
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Girinagar, Pune-411025, India
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Sengupta A, Das S, Dasgupta S, Sengupta P, Datta P. Flexible Nanogenerator from Electrospun PVDF-Polycarbazole Nanofiber Membranes for Human Motion Energy-Harvesting Device Applications. ACS Biomater Sci Eng 2021; 7:1673-1685. [PMID: 33683096 DOI: 10.1021/acsbiomaterials.0c01730] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Poly(vinylidene difluoride) (PVDF) has become the polymer matrix of choice for fabrication of wearable electronics and physiological monitoring devices. Despite possessing a high piezoelectric constant, additives are required to increase the charge transfer from PVDF matrix to connected signal readout units. Many of these additives also stabilize the β-phase of PVDF, which is associated with highest piezoelectric coefficients. However, most of the additives used are often brittle ceramic-phase materials resulting in decreased flexibility of the devices and offsetting the gain in β-phase content. Intrinsically conducting polymers (ICP), on the other hand, are ideal candidates to improve the device-related properties of PVDF, due to their higher flexibility than ceramic fillers as well as ability to form conducting network in PVDF membranes. This work reports the performance and device feasibility of PVDF-polycarbazole (PCZ) electrospun nanofiber membranes. A higher β-phase was observed by FTIR spectroscopy in PVDF/PCZ compared to other PVDF phases. Moreover, a higher open-circuit potential was recorded over PVDF/polyaniline composites, which were studied for comparison. The addition of PCZ reduced the flexibility of pure PVDF nanofibers by 20% only. Besides, the work investigated the bacterial biofouling and cell compatibility of the matrix, as essential properties to examine any putative medical device application. PVDF/PCZ membranes were then used to develop a nanogenerator, which was capable of instantly lighting an entire LED array employing the rectified output power, and charged up a 2.2 μF capacitors using a bridge rectifier through a vertical compressive force applied periodically. Finally, the nanogenerator demonstrated electrical energy harvesting from movements of various parts of the human body, such as toe and heel movement and wrist bending. In conclusion, PCZ can be considered as an attractive, biocompatible, and anti-biofouling conducting polymer for electrical actuation and flexible electronic device applications.
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Affiliation(s)
- Aditya Sengupta
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, P.O. Botanic Garden, Howrah 711103, WB, India
| | - Soumen Das
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, P.O. Botanic Garden, Howrah 711103, WB, India
| | - Shalini Dasgupta
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, P.O. Botanic Garden, Howrah 711103, WB, India
| | - Pavel Sengupta
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, P.O. Botanic Garden, Howrah 711103, WB, India
| | - Pallab Datta
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, P.O. Botanic Garden, Howrah 711103, WB, India
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50
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Abstract
Wearable self-powered sensors represent a theme of interest in the literature due to the progress in the Internet of Things and implantable devices. The integration of different materials to harvest energy from body movement or the environment to power up sensors or act as an active component of the detection of analytes is a frontier to be explored. This review describes the most relevant studies of the integration of nanogenerators in wearables based on the interaction of piezoelectric and triboelectric devices into more efficient and low-cost harvesting systems to power up batteries or to use the generated power to identify multiple analytes in self-powered sensors and biosensors.
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