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Lipovka A, Fatkullin M, Shchadenko S, Petrov I, Chernova A, Plotnikov E, Menzelintsev V, Li S, Qiu L, Cheng C, Rodriguez RD, Sheremet E. Textile Electronics with Laser-Induced Graphene/Polymer Hybrid Fibers. ACS Appl Mater Interfaces 2023; 15:38946-38955. [PMID: 37466067 DOI: 10.1021/acsami.3c06968] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
The concept of wearables is rapidly evolving from flexible polymer-based devices to textile electronics. The reason for this shift is the ability of textiles to ensure close contact with the skin, resulting in comfortable, lightweight, and compact "always with you" sensors. We are contributing to this polymer-textile transition by introducing a novel and simple way of laser intermixing of graphene with synthetic fabrics to create wearable sensing platforms. Our hybrid materials exhibit high electrical conductivity (87.6 ± 36.2 Ω/sq) due to the laser reduction of graphene oxide and simultaneous laser-induced graphene formation on the surface of textiles. Furthermore, the composite created between graphene and nylon ensures the durability of our materials against sonication and washing with detergents. Both of these factors are essential for real-life applications, but what is especially useful is that our free-form composites could be used as-fabricated without encapsulation, which is typically required for conventional laser-scribed materials. We demonstrate the exceptional versatility of our new hybrid textiles by successfully recording muscle activity, heartbeat, and voice. We also show a gesture sensor and an electrothermal heater embedded within a single commercial glove. Additionally, the use of these textiles could be extended to personal protection equipment and smart clothes. We achieve this by implementing self-sterilization with light and laser-induced functionalization with silver nanoparticles, which results in multifunctional antibacterial textiles. Moreover, incorporating silver into such fabrics enables their use as surface-enhanced Raman spectroscopy sensors, allowing for the direct analysis of drugs and sweat components on the clothing itself. Our research offers valuable insights into simple and scalable processes of textile-based electronics, opening up new possibilities for paradigms like the Internet of Medical Things.
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Affiliation(s)
- Anna Lipovka
- Tomsk Polytechnic University, Lenina Ave. 30, Tomsk 634034, Russia
| | - Maxim Fatkullin
- Tomsk Polytechnic University, Lenina Ave. 30, Tomsk 634034, Russia
| | | | - Ilia Petrov
- Tomsk Polytechnic University, Lenina Ave. 30, Tomsk 634034, Russia
| | - Anna Chernova
- Tomsk Polytechnic University, Lenina Ave. 30, Tomsk 634034, Russia
| | | | | | - Shuang Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Department of Ultrasound, West China Hospital, Sichuan University, Chengdu 610065, China
| | - Li Qiu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Department of Ultrasound, West China Hospital, Sichuan University, Chengdu 610065, China
| | - Chong Cheng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Department of Ultrasound, West China Hospital, Sichuan University, Chengdu 610065, China
| | - Raul D Rodriguez
- Tomsk Polytechnic University, Lenina Ave. 30, Tomsk 634034, Russia
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2
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Yu H, Zhuang Q, Lin J, Chen Z, Chen Z, Wang Z, Zhou G, Zhang S, Lai Y, Wu D. One-step fabrication of high-performance graphene composites from graphite solution for bio-scaffolds and flexible strain sensors. Nanotechnology 2023; 34. [PMID: 37137299 DOI: 10.1088/1361-6528/acd1f4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 05/03/2023] [Indexed: 05/05/2023]
Abstract
Graphene composites possess great application potential in various fields including flexible electrodes, wearable sensors and biomedical devices owing to their excellent mechanical and electrical properties. However, it remains challenging to fabricate graphene composites-based devices with high consistency due to the gradual aggression effect of graphene during fabrication process. Herein, we propose a method for one-step fabricating graphene / polymer composite-based devices from graphite / polymer solution by using electrohydrodynamic printing (EHD) with the Weissenberg effect (EPWE). Taylor-Couette flows with high shearing speed were generated to exfoliate high-quality graphene with a rotating steel microneedle coaxially set in a spinneret tube. The effects of the rotating speed of the needle, spinneret size and precursor ingredients on the graphene concentration were discussed. As a proof of concept, EPGW was used to successfully fabricate graphene / PCL bio-scaffolds with good biocompatibility and graphene / TPU strain sensor for detecting human motions with a maximum gauge factor more than 2400 from 40 to 50% strain. As such, this method sheds a new light on one-step in situ fabrication of graphene / polymer composite based devices from graphite solution with low cost.
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Affiliation(s)
- Hang Yu
- Department of Mechanical and Electrical Engineering, Xiamen University, No.422 Xiang'an South Road, Xiang'an District, Xiamen, Fujian Province, Xiamen, 361005, CHINA
| | - Qibin Zhuang
- Department of Mechanical and Electrical Engineering, Xiamen University, No.422 Xiang'an South Road, Xiang'an District, Xiamen, Fujian Province, Xiamen, 361005, CHINA
| | - Jiawei Lin
- Department of Mechanical and Electrical Engineering, Xiamen University, No.422 Xiang'an South Road, Xiang'an District, Xiamen City, Fujian Province, Xiamen, 361005, CHINA
| | - Zhuo Chen
- Department of Mechanical and Electrical Engineering, Xiamen University, No.422 Xiang'an South Road, Xiang'an District, Xiamen, Fujian Province, Xiamen, 361005, CHINA
| | - Zhiwen Chen
- Department of Mechanical and Electrical Engineering, Xiamen University, No.422 Xiang'an South Road, Xiang'an District, Xiamen, Fujian Province, Xiamen, 361005, CHINA
| | - Zhongbao Wang
- Xiamen University, No.422 Xiang'an South Road, Xiang'an District, Xiamen, Fujian Province, Xiamen, 361005, CHINA
| | - Gang Zhou
- Transmission Mechanisms Beijing Institute of Control Engineering, No.104, Youyi Road, Haidian, Beijing, Beijing, 100094, CHINA
| | - Shaohua Zhang
- Transmission Mechanisms Beijing Institute of Control Engineering, No.104, Youyi Road, Haidian, Beijing, Beijing, 100094, CHINA
| | - Yingzhen Lai
- Department of Stomatology, Xiamen Medical College, No.1999, Gunkou Middle Road, Jimei, Xiamen, Fujian Province, Xiamen, 361023, CHINA
| | - Dezhi Wu
- Department of Mechanical and Electrical Engineering, Xiamen University, No.422 Xiang'an South Road, Xiang'an District, Xiamen, Fujian Province, Xiamen, 361005, CHINA
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Xie Z, Wang J, Yeow JTW. Flexible Multi-Element Photothermoelectric Detectors Based on Spray-Coated Graphene/Polyethylenimine Composites for Nondestructive Testing. ACS Appl Mater Interfaces 2023; 15:5921-5930. [PMID: 36649212 DOI: 10.1021/acsami.2c20487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Photothermoelectric (PTE) detectors receive much attention owing to the superiority of self-powered, non-bias input, and friendly ambient environments, facilitating abundant prospective applications in industrial inspection, medical diagnostics, homeland security, and wearable Internet of Things. However, many drawbacks of currently applicable PTE materials, involving unstable material oxidation, an uncontrollable fabrication process, and unscalable manufacturing, hinder the development of industrial productions. Herein, we demonstrate a vertical graphene/polyethylenimine composite PTE detector fabricated with an optimized spray-coating method in compact alignment on various surfaces, achieving a significant photovoltage detectivity and responsivity of 6.05 × 107 cm Hz1/2 W-1 and 2.7 V W-1 response at a 973 K blackbody temperature radiation (2.98 μm peak wavelength). In addition, the long-term stability and resistible concave and convex bending flexibility are presented. Furthermore, a nondestructive testing system is established and verified through high-spatial-resolution and high-penetration illustration. Overall, the spray-coated and flexible PTE graphene/polyethylenimine multi-elements with broadband infrared absorption compatibility and stable energy conversion are promising candidates for future health monitoring and wearable electronics.
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Affiliation(s)
- Zhemiao Xie
- Advanced Micro-/Nano-Devices Lab, Department of Systems Design Engineering, University of Waterloo, 200 University Ave West, Waterloo, OntarioN2L 3G1, Canada
| | - Jiaqi Wang
- Advanced Micro-/Nano-Devices Lab, Department of Systems Design Engineering, University of Waterloo, 200 University Ave West, Waterloo, OntarioN2L 3G1, Canada
| | - John T W Yeow
- Advanced Micro-/Nano-Devices Lab, Department of Systems Design Engineering, University of Waterloo, 200 University Ave West, Waterloo, OntarioN2L 3G1, Canada
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4
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Shu K, Tian S, Wang Y, Fei G, Sun L, Niu H, Duan Y, Hu G, Wang H. Graphene Composite via Bacterial Cellulose Assisted Liquid Phase Exfoliation for Sodium-Ion Batteries. Polymers (Basel) 2022; 15. [PMID: 36616551 DOI: 10.3390/polym15010203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/19/2022] [Accepted: 12/21/2022] [Indexed: 01/04/2023] Open
Abstract
One of the most critical challenges for commercialization of sodium-ion battery (SIB) is to develop carbon anodes with high capacity and good rate performance. Graphene would be an excellent SIB anode candidate due to its success in various kinds of batteries. Liquid-phase exfoliation (LPE) method is an inexpensive, facile and potentially scalable method to produce less-defected graphene sheets. In this work, we developed an improved, dispersant-assisted LPE method to produce graphene composite materials from raw graphite with high yield and better quality for SIB anode. Here, bacterial cellulose (BC) was used as a green dispersant/stabilizer for LPE, a "spacer" for anti-restacking, as well as a carbon precursor in the composite. As a result, the carbonized BC (CBC)/LPE graphene (LEGr) presented improved performance compared to composite with graphene prepared by Hummers method. It exhibited a specific capacity of 233 mAh g-1 at a current density of 20 mA g-1, and 157 mAh g-1 after 200 cycles at a high current density of 100 mA g-1 with capacity retention rate of 87.73%. This method not only provides new insight in graphene composites preparation, but also takes a new step in the exploration of anode materials for sodium-ion batteriesSIBs.
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Yan L, Zhang C, Xi F. Disposable Amperometric Label-Free Immunosensor on Chitosan-Graphene-Modified Patterned ITO Electrodes for Prostate Specific Antigen. Molecules 2022; 27:molecules27185895. [PMID: 36144631 PMCID: PMC9505937 DOI: 10.3390/molecules27185895] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 08/28/2022] [Accepted: 09/06/2022] [Indexed: 12/01/2022] Open
Abstract
A facile and highly sensitive determination of prostate-specific antigen (PSA) is of great significance for the early diagnosis, monitoring and prognosis of prostate cancer. In this work, a disposable and label-free electrochemical immunosensing platform was demonstrated based on chitosan–graphene-modified indium tin oxide (ITO) electrode, which enables sensitive amperometric determination of PSA. Chitosan (CS) modified reduced graphene oxide (rGO) nanocomposite (CS–rGO) was easily synthesized by the chemical reduction of graphene oxide (GO) using CS as a dispersant and biofunctionalizing agent. When CS–rGO was modified on the patterned ITO, CS offered high biocompatibility and reactive groups for the immobilization of recognition antibodies and rGO acted as a transduction element and enhancer to improve the electronic conductivity and stability of the CS–rGO composite film. The affinity-based biosensing interface was constructed by covalent immobilization of a specific polyclonal anti-PSA antibody (Ab) on the amino-enriched electrode surface via a facile glutaraldehyde (GA) cross-linking method, which was followed by the use of bovine serum albumin to block the non-specific sites. The immunosensor allowed the detection of PSA in a wide range from 1 to 5 ng mL−1 with a low limit of detection of 0.8 pg mL−1. This sensor also exhibited high selectivity, reproducibility, and good storage stability. The application of the prepared immunosensor was successfully validated by measuring PSA in spiked human serum samples.
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Affiliation(s)
- Liang Yan
- Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan 030032, China
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Correspondence:
| | - Chaoyan Zhang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Fengna Xi
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
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Danner PM, Iacob M, Sasso G, Burda I, Rieger B, Nüesch F, Opris DM. Solvent-free synthesis and processing of conductive elastomer composites for "green" dielectric elastomer transducers. Macromol Rapid Commun 2022; 43:e2100823. [PMID: 35084072 DOI: 10.1002/marc.202100823] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/24/2022] [Indexed: 11/10/2022]
Abstract
Stretchable electrodes are the more suitable for dielectric elastomer transducers (DET), the closer the mechanical characteristics of electrodes and elastomer are. Here, we present a solvent-free synthesis and processing of conductive composites with excellent electrical and mechanical properties for transducers. The composites are prepared by in-situ polymerization of cyclosiloxane monomers in the presence of graphene nanoplatelets. The low viscosity of the monomer allows for easy dispersion of the filler, eliminating the need for a solvent. After the polymerization, a cross-linking agent is added at room temperature, the composite is solvent-free screen-printed, and the cross-linking reaction is initiated by heating. The best material shows conductivity σ = 8.2 S∙cm-1 , Young's modulus Y10% = 167 kPa, and strain at break s = 305%. The electrode withstands large uniaxial strains without delamination, shows no conductivity losses during repeated operation for 500 000 cycles, and has an excellent recovery of electrical properties upon being stretched at strains of up to 180%. Reliable prototype capacitive sensors and stack actuators are manufactured by screen-printing the conductive composite on the dielectric film. Finally, stack actuators manufactured from dielectric and conductive materials that are synthesized solvent-free are demonstrated. The stack actuators even self-repair after a breakdown event. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Patrick M Danner
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Functional Polymers, Ueberlandstr. 129, Dübendorf, CH-8600, Switzerland.,Wacker-Chair of Macromolecular Chemistry, Catalysis Research Center, Department of Chemistry, Technical University of Munich, Garching, 85748, Germany.,Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, Zurich, CH-8093, Switzerland
| | - Mihail Iacob
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Functional Polymers, Ueberlandstr. 129, Dübendorf, CH-8600, Switzerland
| | - Giacomo Sasso
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Functional Polymers, Ueberlandstr. 129, Dübendorf, CH-8600, Switzerland
| | - Iurii Burda
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Mechanical Systems Engineering, Ueberlandstr. 129, Dübendorf, CH-8600, Switzerland
| | - Bernhard Rieger
- Wacker-Chair of Macromolecular Chemistry, Catalysis Research Center, Department of Chemistry, Technical University of Munich, Garching, 85748, Germany
| | - Frank Nüesch
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Functional Polymers, Ueberlandstr. 129, Dübendorf, CH-8600, Switzerland.,Ecole Polytechnique Fédérale de Lausanne (EPFL), Institut des Matériaux, Station 12, Lausanne, CH-1015, Switzerland
| | - Dorina M Opris
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Functional Polymers, Ueberlandstr. 129, Dübendorf, CH-8600, Switzerland.,Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, Zurich, CH-8093, Switzerland
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7
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Wu Z, Liu J, Liang M, Zheng H, Zhu C, Wang Y. Detection of Imatinib Based on Electrochemical Sensor Constructed Using Biosynthesized Graphene-Silver Nanocomposite. Front Chem 2021; 9:670074. [PMID: 33968906 PMCID: PMC8100453 DOI: 10.3389/fchem.2021.670074] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 03/19/2021] [Indexed: 11/13/2022] Open
Abstract
The establishment of a monitoring technique for imatinib is necessary in clinical and environmental toxicology. Leaf extracts of Lycoris longituba were used as reducing agent for the one-step synthesis of reduced graphene oxide-Ag nanocomposites. This nanocomposite was characterized by TEM, FTIR, XRD, and other instruments. Then, the graphene/Ag nanocomposite was used as a modifier to be cemented on the surface of the glassy carbon electrode. This electrode exhibited excellent electrochemical sensing performance. Under the optimal conditions, the proposed electrode could detect imatinib at 10 nM−0.28 mM with a low limit of detection. This electrochemical sensor also has excellent anti-interference performance and reproducibility.
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Affiliation(s)
- Zhen Wu
- Day Chemotherapy Unit, Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Jingjing Liu
- Hematology Department, Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | | | | | - Chuansheng Zhu
- Hematology Department, Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Yan Wang
- Hematology Department, Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
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8
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Wang Q, Jia D, Pei X, Wu X, Xu F, Wang H, Cao M, Chen H. Investigation of Electromagnetic Pulse Compaction on Conducting Graphene/PEKK Composite Powder. Materials (Basel) 2021; 14:636. [PMID: 33573144 DOI: 10.3390/ma14030636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 01/22/2021] [Accepted: 01/25/2021] [Indexed: 11/16/2022]
Abstract
Polymer-composite materials have the characteristics of light weight, high load, corrosion resistance, heat resistance, and high oil resistance. In particular, graphene composite has better electrical conductivity and mechanical performance. However, the raw materials of graphene composite are processed into semi-finished products, directly affecting their performance and service life. The electromagnetic pulse compaction was initially studied to get the product Graphene/PEKK composite powder. Simultaneously, spark plasma sintering was used to get the bars to determine the electrical conductivity of Graphene/PEKK composite. On the basis of this result, conducting Graphene/PEKK composite powder can be processed by electromagnetic pulse compaction. Finite element numerical analysis was used to obtain process parameters during the electromagnetic pulse compaction. The results show that discharge voltage and discharge capacitance influence on the magnetic force, which is a main moulding factor affecting stress, strain and density distribution on the specimen during electromagnetic pulse compaction in a few microseconds.
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9
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Koo JH, Paek SM. Microwave-Assisted Synthesis of Ge/GeO 2-Reduced Graphene Oxide Nanocomposite with Enhanced Discharge Capacity for Lithium-Ion Batteries. Nanomaterials (Basel) 2021; 11:319. [PMID: 33513759 PMCID: PMC7911565 DOI: 10.3390/nano11020319] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 01/21/2021] [Accepted: 01/23/2021] [Indexed: 11/16/2022]
Abstract
Germanium/germanium oxide nanoparticles with theoretically high discharge capacities of 1624 and 2152 mAh/g have attracted significant research interest for their potential application as anode materials in Li-ion batteries. However, these materials exhibit poor long-term performance due to the large volume change of 370% during charge/discharge cycles. In the present study, to overcome this shortcoming, a Ge/GeO2/graphene composite material was synthesized. Ge/GeO2 nanoparticles were trapped between matrices of graphene nanosheets to offset the volume expansion effect. Transmission electron microscopy images revealed that the Ge/GeO2 nanoparticles were distributed on the graphene nanosheets. Discharge/charge experiments were performed to evaluate the Li storage properties of the samples. The discharge capacity of the bare Ge/GeO2 nanoparticles in the first discharge cycle was considerably large; however, the value decreased rapidly with successive cycles. Conversely, the present Ge/GeO2/graphene composite exhibited superior cycling stability.
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Affiliation(s)
| | - Seung-Min Paek
- Department of Chemistry, Kyungpook National University, Daegu 41566, Korea;
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10
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Kim M, Jeong JH, Lee JY, Capasso A, Bonaccorso F, Kang SH, Lee YK, Lee GH. Electrically Conducting and Mechanically Strong Graphene-Polylactic Acid Composites for 3D Printing. ACS Appl Mater Interfaces 2019; 11:11841-11848. [PMID: 30810305 DOI: 10.1021/acsami.9b03241] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The advent of 3D printing has had a disruptive impact in manufacturing and can potentially revolutionize industrial fields. Thermoplastic materials printable into complex structures are widely employed for 3D printing. Polylactic acid (PLA) is among the most promising polymers used for 3D printing, owing to its low cost, biodegradability, and nontoxicity. However, PLA is electrically insulating and mechanically weak; this limits its use in a variety of 3D printing applications. This study demonstrates a straightforward and environment-friendly method to fabricate conductive and mechanically reinforced PLA composites by incorporating graphene nanoplatelets (GNPs). To fully utilize the superior electrical and mechanical properties of graphene, liquid-exfoliated GNPs are dispersed in isopropyl alcohol without the addition of any surfactant and combined with PLA dissolved in chloroform. The GNP-PLA composites exhibit improved mechanical properties (improvement in tensile strength by 44% and maximum strain by 57%) even at a low GNP threshold concentration of 2 wt %. The GNP-PLA composites also exhibit an electrical conductivity of over 1 mS/cm at >1.2 wt %. The GNP-PLA composites can be 3D-printed into various features with electrical conductivity and mechanical flexibility. This work presents a new direction toward advanced 3D printing technology by providing higher flexibility in designing multifunctional 3D printed features.
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Affiliation(s)
- Mirae Kim
- Department of Materials Science and Engineering , Yonsei University , Seoul 03722 , Korea
| | - Jae Hwan Jeong
- Department of Materials Science and Engineering , Yonsei University , Seoul 03722 , Korea
| | - Jong-Young Lee
- Department of Materials Science and Engineering , Yonsei University , Seoul 03722 , Korea
| | - Andrea Capasso
- Department of Materials Science and Engineering , Yonsei University , Seoul 03722 , Korea
- International Iberian Nanotechnology Laboratory , 4715-330 Braga , Portugal
| | | | - Seok-Hyeon Kang
- Department of Materials Science and Engineering , Yonsei University , Seoul 03722 , Korea
| | - Young-Kook Lee
- Department of Materials Science and Engineering , Yonsei University , Seoul 03722 , Korea
| | - Gwan-Hyoung Lee
- Department of Materials Science and Engineering , Yonsei University , Seoul 03722 , Korea
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11
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Pepłowski A, Walter PA, Janczak D, Górecka Ż, Święszkowski W, Jakubowska M. Solventless Conducting Paste Based on Graphene Nanoplatelets for Printing of Flexible, Standalone Routes in Room Temperature. Nanomaterials (Basel) 2018; 8:E829. [PMID: 30322163 PMCID: PMC6215265 DOI: 10.3390/nano8100829] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 10/02/2018] [Accepted: 10/11/2018] [Indexed: 12/31/2022]
Abstract
Novel printable composites based on high aspect ratio graphene nanoplatelets (GNPs), fabricated without using solvents, and at room temperature, that can be employed for flexible, standalone conducting lines for wearable electronics are presented. The percolation threshold of examined composites was determined to be as low as 0.147 vol% content of GNPs. Obtained sheet resistance values were as low as 6.1 Ω/sq. Stretching and bending tests are presented, proving suitability of the composite for flexible applications as the composite retains its conductivity even after 180° folding and 13.5% elongation.
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Affiliation(s)
- Andrzej Pepłowski
- Department of Microtechnology and Nanotechnology, Faculty of Mechatronics, Warsaw University of Technology, 8 A. Boboli St., 02-525 Warsaw, Poland.
| | - Piotr A Walter
- Department of Microtechnology and Nanotechnology, Faculty of Mechatronics, Warsaw University of Technology, 8 A. Boboli St., 02-525 Warsaw, Poland.
| | - Daniel Janczak
- Department of Microtechnology and Nanotechnology, Faculty of Mechatronics, Warsaw University of Technology, 8 A. Boboli St., 02-525 Warsaw, Poland.
| | - Żaneta Górecka
- Faculty of Material Science and Engineering, Warsaw University of Technology, 141 Wołoska St., 02-507 Warsaw, Poland.
| | - Wojciech Święszkowski
- Faculty of Material Science and Engineering, Warsaw University of Technology, 141 Wołoska St., 02-507 Warsaw, Poland.
| | - Małgorzata Jakubowska
- Department of Microtechnology and Nanotechnology, Faculty of Mechatronics, Warsaw University of Technology, 8 A. Boboli St., 02-525 Warsaw, Poland.
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12
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He G, Xu M, Zhao J, Jiang S, Wang S, Li Z, He X, Huang T, Cao M, Wu H, Guiver MD, Jiang Z. Bioinspired Ultrastrong Solid Electrolytes with Fast Proton Conduction along 2D Channels. Adv Mater 2017; 29:1605898. [PMID: 28585367 DOI: 10.1002/adma.201605898] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 03/16/2017] [Indexed: 06/07/2023]
Abstract
Solid electrolytes have attracted much attention due to their great prospects in a number of energy- and environment-related applications including fuel cells. Fast ion transport and superior mechanical properties of solid electrolytes are both of critical significance for these devices to operate with high efficiency and long-term stability. To address a common tradeoff relationship between ionic conductivity and mechanical properties, electrolyte membranes with proton-conducting 2D channels and nacre-inspired architecture are reported. An unprecedented combination of high proton conductivity (326 mS cm-1 at 80 °C) and superior mechanical properties (tensile strength of 250 MPa) are achieved due to the integration of exceptionally continuous 2D channels and nacre-inspired brick-and-mortar architecture into one materials system. Moreover, the membrane exhibits higher power density than Nafion 212 membrane, but with a comparative weight of only ≈0.1, indicating potential savings in system weight and cost. Considering the extraordinary properties and independent tunability of ion conduction and mechanical properties, this bioinspired approach may pave the way for the design of next-generation high-performance solid electrolytes with nacre-like architecture.
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Affiliation(s)
- Guangwei He
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Mingzhao Xu
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Jing Zhao
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Shengtao Jiang
- School of Civil & Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Shaofei Wang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Zhen Li
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Xueyi He
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Tong Huang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Moyuan Cao
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Hong Wu
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Michael D Guiver
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin, 300072, China
| | - Zhongyi Jiang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
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Choi SH, Jung KY, Kang YC. Amorphous GeOx-Coated Reduced Graphene Oxide Balls with Sandwich Structure for Long-Life Lithium-Ion Batteries. ACS Appl Mater Interfaces 2015; 7:13952-13959. [PMID: 26047208 DOI: 10.1021/acsami.5b02846] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Amorphous GeOx-coated reduced graphene oxide (rGO) balls with sandwich structure are prepared via a spray-pyrolysis process using polystyrene (PS) nanobeads as sacrificial templates. This sandwich structure is formed by uniformly coating the exterior and interior of few-layer rGO with amorphous GeOx layers. X-ray photoelectron spectroscopy analysis reveals a Ge:O stoichiometry ratio of 1:1.7. The amorphous GeOx-coated rGO balls with sandwich structure have low charge-transfer resistance and fast Li(+)-ion diffusion rate. For example, at a current density of 2 A g(-1), the GeOx-coated rGO balls with sandwich and filled structures and the commercial GeO2 powders exhibit initial charge capacities of 795, 651, and 634 mA h g(-1), respectively; the corresponding 700th-cycle charge capacities are 758, 579, and 361 mA h g(-1). In addition, at a current density of 5 A g(-1), the rGO balls with sandwich structure have a 1600th-cycle reversible charge capacity of 629 mA h g(-1) and a corresponding capacity retention of 90.7%, as measured from the maximum reversible capacity at the 100th cycle.
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Affiliation(s)
- Seung Ho Choi
- †Department of Materials Science and Engineering, Korea University, Anam-Dong, Seongbuk-Gu, Seoul 136-713, Republic of Korea
| | - Kyeong Youl Jung
- ‡Department of Chemical Engineering, Kongju National University, 275 Budae-dong, Cheonan, Chungnam 330-717, Republic of Korea
| | - Yun Chan Kang
- †Department of Materials Science and Engineering, Korea University, Anam-Dong, Seongbuk-Gu, Seoul 136-713, Republic of Korea
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