1
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Gromboni MF, Cordeiro-Junior PJM, Corradini P, Mascaro LH, Lanza MRDV. One-step preparation of Co 2V 2O 7: synthesis and application as Fenton-like catalyst in gas diffusion electrode. Phys Chem Chem Phys 2022; 24:10249-10262. [DOI: 10.1039/d2cp00072e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bimetallic oxides and MOFs have been employed as catalysts for ORR via two-electron and Fenton-based processes. This work reports the development of a new green one-step route for obtaining Co2V2O7....
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2
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Liu BT, Wang XY, Chen YW, Pan WC. Deposit patterns of silver nanowire solution with the solvent consisting of ethylene glycol and glycerol: Formation of triple conductive lines. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2020.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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3
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Kwak B, Bae J. Integrated Design and Fabrication of a Conductive PDMS Sensor and Polypyrrole Actuator Composite. IEEE Robot Autom Lett 2020. [DOI: 10.1109/lra.2020.2982075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4
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Fan R, Liu C, He K, Ho-Sum Cheng S, Chen D, Liao C, Li RKY, Tang J, Lu Z. Versatile Strategy for Realizing Flexible Room-Temperature All-Solid-State Battery through a Synergistic Combination of Salt Affluent PEO and Li 6.75La 3Zr 1.75Ta 0.25O 12 Nanofibers. ACS APPLIED MATERIALS & INTERFACES 2020; 12:7222-7231. [PMID: 31967446 DOI: 10.1021/acsami.9b20104] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
All-solid-state lithium metal batteries are highly attractive because of their high energy density and inherent safety. However, it is still a great challenge to design the solid electrolytes with high ionic conductivity at room temperature and good electrode/electrolyte interfacial compatibility simultaneously in a facile and scalable way. In this work, for the first time, the combination of salt affluent Poly(ethylene oxide) with Li6.75La3Zr1.75Ta0.25O12 nanofibers was designed and intensively evaluated. The synergistic effect of each component in the electrolyte enhances the ionic conductivity to 2.13 × 10-4 S cm-1 at 25 °C and exhibits a high transference number of 0.57. The composite electrolyte possesses superior interfacial stability against Li metal for over 680 h in Li symmetric cells even at a relatively high current density of 2 mA cm-2. The all-solid-state batteries employing the solid electrolytes exhibit excellent cycling stability at room temperature and superior safety performance. This work proposes a brand-new strategy to design and fabricate solid electrolytes in a versatile way for room-temperature all-solid-state batteries.
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Affiliation(s)
- Rong Fan
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering , Shenzhen University , Shenzhen 518060 , PR China
| | - Chen Liu
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering , Shenzhen University , Shenzhen 518060 , PR China
| | - Kangqiang He
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering , Shenzhen University , Shenzhen 518060 , PR China
- Department of Materials Science and Engineering , City University of Hong Kong , Kowloon , Hong Kong , PR China
| | - Samson Ho-Sum Cheng
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering , Shenzhen University , Shenzhen 518060 , PR China
| | - Dazhu Chen
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering , Shenzhen University , Shenzhen 518060 , PR China
| | - Chengzhu Liao
- Department of Materials Science and Engineering, Shenzhen Key Laboratory of Solid State Batteries, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power , Southern University of Science and Technology , Shenzhen 518055 , PR China
| | - Robert K Y Li
- Department of Materials Science and Engineering , City University of Hong Kong , Kowloon , Hong Kong , PR China
| | - Jiaoning Tang
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering , Shenzhen University , Shenzhen 518060 , PR China
| | - Zhouguang Lu
- Department of Materials Science and Engineering, Shenzhen Key Laboratory of Solid State Batteries, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power , Southern University of Science and Technology , Shenzhen 518055 , PR China
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5
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Dong X, Wang S, Yu P, Yang F, Zhao J, Wu LZ, Tung CH, Wang J. Ultrafast Vibrational Energy Transfer through the Covalent Bond and Intra- and Intermolecular Hydrogen Bonds in a Supramolecular Dimer by Two-Dimensional Infrared Spectroscopy. J Phys Chem B 2020; 124:544-555. [PMID: 31873023 DOI: 10.1021/acs.jpcb.9b10431] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this work, the structural fluctuations and vibrational energy transfer dynamics in a supramolecular homodimer model, which is composed of 2-(9-anthracene)ureido-6-(1-undecyl)-4[1H]-pyrimidinone (UPAn) with quadruple intermolecular and single intramolecular hydrogen bonds (HBs), have been examined using ultrafast two-dimensional infrared (2D IR) and steady-state IR spectroscopies. A less structurally fluctuating intermolecular HB is found between the pyrimidinone C═O and ureido N-H groups. However, a larger structurally fluctuating intramolecular HB is suggested by the equilibrium and dynamical line-shape measurements of the ureido C═O stretch. Further, dynamical time-dependent 2D IR diagonal and off-diagonal signals show that intra- and intermolecular vibrational energy transfer processes occur on the picosecond timescale, where the latter is more efficient due to intermolecular hydrogen bonding interaction and through-space interaction.
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Affiliation(s)
- Xueqian Dong
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China.,University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Sumin Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials , Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China.,School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
| | - Pengyun Yu
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China.,University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Fan Yang
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Juan Zhao
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China.,University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Li-Zhu Wu
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China.,Key Laboratory of Photochemical Conversion and Optoelectronic Materials , Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Chen-Ho Tung
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China.,Key Laboratory of Photochemical Conversion and Optoelectronic Materials , Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Jianping Wang
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China.,University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
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6
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Liu BT, Li CD. Highly conductive and fine lines of silver nanowires fabricated by evaporative self-assembly. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2018.09.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Choi H, Seok Woo J, Tark Han J, Park SY. Fabrication of water-dispersible single-walled carbon nanotube powder using N-methylmorpholine N-oxide. NANOTECHNOLOGY 2017; 28:465706. [PMID: 29063866 DOI: 10.1088/1361-6528/aa8c24] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Dispersion of nanocarbon materials in liquid media, via solution processing such as spraying, printing, spinning, etc. is one of the prerequisites for practical applications. Here we report that water-dispersible single-walled carbon nanotubes (SWCNTs) were prepared through successive treatments with chlorosulfuric acid (CSA)/H2O2 and N-methylmorpholine N-oxide (NMO) monohydrate. The powder of the CSA/H2O2- and NMO-treated SWCNTs (N-SWCNTs) could be readily redispersed in water in concentrations as high as 1 g l-1 without requiring a dispersant. The mechanism responsible for the high dispersity of the N-SWCNT powder in polar solvents, including water, was elucidated based on the high polarity of the NMO molecule. In order to highlight the wide applicability of the N-SWCNTs, they were used successfully to prepare conducting thin films by spray-coating plastic substrates with an aqueous hybrid solution containing the N-SWCNTs and Ag nanowires (NWs). In addition, a flexible, large-area thin-film heater was prepared based on the N-SWCNT/AgNW hybrid film with a transmittance of 93% and sheet resistance of 30 Ω sq-1.
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Affiliation(s)
- Hyejun Choi
- Department of Polymer Science & Engineering, Polymeric Nanomaterials Laboratory, School of Applied Chemical Engineering, Kyungpook National University, #1370 Sangyuk-dong, Buk-gu, Daegu 41566, Republic of Korea
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8
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Xu J. Facile synthesis, characterization and the anchor effect on cotton fabrics of cyanuric chloride activated carbon nanotubes. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.06.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Ko Y, Kwon M, Bae WK, Lee B, Lee SW, Cho J. Flexible supercapacitor electrodes based on real metal-like cellulose papers. Nat Commun 2017; 8:536. [PMID: 28912562 PMCID: PMC5599591 DOI: 10.1038/s41467-017-00550-3] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Accepted: 07/07/2017] [Indexed: 11/09/2022] Open
Abstract
The effective implantation of conductive and charge storage materials into flexible frames has been strongly demanded for the development of flexible supercapacitors. Here, we introduce metallic cellulose paper-based supercapacitor electrodes with excellent energy storage performance by minimizing the contact resistance between neighboring metal and/or metal oxide nanoparticles using an assembly approach, called ligand-mediated layer-by-layer assembly. This approach can convert the insulating paper to the highly porous metallic paper with large surface areas that can function as current collectors and nanoparticle reservoirs for supercapacitor electrodes. Moreover, we demonstrate that the alternating structure design of the metal and pseudocapacitive nanoparticles on the metallic papers can remarkably increase the areal capacitance and rate capability with a notable decrease in the internal resistance. The maximum power and energy density of the metallic paper-based supercapacitors are estimated to be 15.1 mW cm−2 and 267.3 μWh cm−2, respectively, substantially outperforming the performance of conventional paper or textile-type supercapacitors. With ligand-mediated layer-by-layer assembly between metal nanoparticles and small organic molecules, the authors prepare metallic paper electrodes for supercapacitors with high power and energy densities. This approach could be extended to various electrodes for portable/wearable electronics.
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Affiliation(s)
- Yongmin Ko
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Minseong Kwon
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Wan Ki Bae
- Photoelectronic Hybrids Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Byeongyong Lee
- The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia, 30332, USA
| | - Seung Woo Lee
- The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia, 30332, USA.
| | - Jinhan Cho
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
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10
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Kim MH, Cho MY, Kim KB, Jeong HG, Han JT, Roh KC. Multi-functionalized herringbone carbon nanofiber for anodes of lithium ion batteries. Phys Chem Chem Phys 2017; 19:18612-18618. [PMID: 28692094 DOI: 10.1039/c7cp03246c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herringbone carbon nanofibers (HCNFs) are prepared for use as anode materials in lithium-ion batteries (LIBs). HCNFs are prepared using a Ni-Fe catalyst and subsequently multi-functionalized with oxygen using the Hummers' method, and then with both oxygen and nitrogen-containing 2-ureido-4[1H]pyrimidinone (UHP) moieties, which endow the HCNFs with the ability to form quadruple hydrogen bonds (QHBs). The as-prepared HCNFs are, on average, 13 μm in length and 100 nm in diameter, with a highly graphitic structure. The oxidized HCNFs (Ox-HCNFs) obtained by Hummers' method are partially exfoliated, having double-bladed saw-like structures that extend in the direction of the graphite planes. QHBs are formed between the HCNFs after functionalization with the UHP moieties. The final surface-modified HCNFs (N-Ox-HCNFs) have more electrochemical sites, shorter Li+ diffusion lengths, and additional electron pathways compared with the as-prepared HCNF and Ox-HCNF. The introduction of oxygen- and nitrogen-containing functional groups improves the performance of LIBs: a high charge capacity of 763 mA h g-1 at 0.1 A g-1, excellent rate capability (a capacity of 402 mA h g-1 at 3 A g-1), and near 100% capacity retention after 300 cycles are reported.
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Affiliation(s)
- Mok-Hwa Kim
- Energy & Environmental Division, Korea Institute of Ceramic Engineering & Technology, 101, Soho-ro, Jinju-si, Gyeongsangnam-do 52851, Republic of Korea.
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11
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Han JT, Jang JI, Cho JY, Hwang JY, Woo JS, Jeong HJ, Jeong SY, Seo SH, Lee GW. Synthesis of nanobelt-like 1-dimensional silver/nanocarbon hybrid materials for flexible and wearable electroncs. Sci Rep 2017; 7:4931. [PMID: 28694467 PMCID: PMC5504065 DOI: 10.1038/s41598-017-05347-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 05/26/2017] [Indexed: 11/10/2022] Open
Abstract
Most synthetic processes of metallic nanostructures were assisted by organic/inorganic or polymeric materials to control their shapes to one-dimension or two-dimension. However, these additives have to be removed after synthesis of metal nanostructures for applications. Here we report a straightforward method for the low-temperature and additive-free synthesis of nanobelt-like silver nanostructures templated by nanocarbon (NC) materials via bio-inspired shape control by introducing supramolecular 2-ureido-4[1H]pyrimidinone (UPy) groups into the NC surface. The growth of the Ag nanobelt structure was found to be induced by these UPy groups through observation of the selective formation of Ag nanobelts on UPy-modified carbon nanotubes and graphene surfaces. The synthesized NC/Ag nanobelt hybrid materials were subsequently used to fabricate the highly conductive fibres (>1000S/cm) that can function as a conformable electrode and highly tolerant strain sensor, as well as a highly conductive and robust paper (>10000S/cm after thermal treatment).
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Affiliation(s)
- Joong Tark Han
- Nano Hybrid Technology Research Center, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute (KERI), Changwon, 51543, South Korea. .,Department of Electro-Functionality Material Engineering, University of Science and Technology (UST), Changwon, 51543, South Korea.
| | - Jeong In Jang
- Nano Hybrid Technology Research Center, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute (KERI), Changwon, 51543, South Korea
| | - Joon Young Cho
- Department of Electro-Functionality Material Engineering, University of Science and Technology (UST), Changwon, 51543, South Korea
| | - Jun Yeon Hwang
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Eunha-ri san 101, Bondong-eup, Wanju-gun, Jeolabuk-do, 55324, Republic of Korea
| | - Jong Seok Woo
- Nano Hybrid Technology Research Center, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute (KERI), Changwon, 51543, South Korea
| | - Hee Jin Jeong
- Nano Hybrid Technology Research Center, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute (KERI), Changwon, 51543, South Korea
| | - Seung Yol Jeong
- Nano Hybrid Technology Research Center, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute (KERI), Changwon, 51543, South Korea
| | - Seon Hee Seo
- Nano Hybrid Technology Research Center, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute (KERI), Changwon, 51543, South Korea
| | - Geon-Woong Lee
- Nano Hybrid Technology Research Center, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute (KERI), Changwon, 51543, South Korea
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12
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Sun KC, Arbab AA, Sahito IA, Qadir MB, Choi BJ, Kwon SC, Yeo SY, Yi SC, Jeong SH. A PVdF-based electrolyte membrane for a carbon counter electrode in dye-sensitized solar cells. RSC Adv 2017. [DOI: 10.1039/c7ra00005g] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
This research demonstrates the design and operation of a dye-sensitized solar cell (DSSC) with a multi-walled carbon nanotube counter electrode (CE) and a pore-filled membrane consisting of polyvinylidene fluoride-co-hexafluoropropylene (PVdF-co-HFP) as an electrolyte.
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Affiliation(s)
- Kyung Chul Sun
- Department of Fuel Cells and Hydrogen Technology
- Hanyang University
- Seoul 133-791
- South Korea
- Technical Textile & Materials R&D Group
| | - Alvira Ayoub Arbab
- Department of Organic and Nano Engineering
- Hanyang University
- Seoul 133-791
- South Korea
- Department of Textile Engineering
| | - Iftikhar Ali Sahito
- Department of Organic and Nano Engineering
- Hanyang University
- Seoul 133-791
- South Korea
- Department of Textile Engineering
| | - Muhammad Bilal Qadir
- Department of Organic and Nano Engineering
- Hanyang University
- Seoul 133-791
- South Korea
- Faculty of Engineering & Technology
| | - Bum Jin Choi
- Department of Organic and Nano Engineering
- Hanyang University
- Seoul 133-791
- South Korea
| | - Soon Chul Kwon
- Department of Organic and Nano Engineering
- Hanyang University
- Seoul 133-791
- South Korea
| | - Sang Young Yeo
- Technical Textile & Materials R&D Group
- Korea Institute of Industrial Technology
- South Korea
| | - Sung Chul Yi
- Department of Fuel Cells and Hydrogen Technology
- Hanyang University
- Seoul 133-791
- South Korea
- Department of Chemical Engineering
| | - Sung Hoon Jeong
- Department of Organic and Nano Engineering
- Hanyang University
- Seoul 133-791
- South Korea
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13
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Kim JH, Lee S, Wajahat M, Jeong H, Chang WS, Jeong HJ, Yang JR, Kim JT, Seol SK. Three-Dimensional Printing of Highly Conductive Carbon Nanotube Microarchitectures with Fluid Ink. ACS NANO 2016; 10:8879-8887. [PMID: 27564233 DOI: 10.1021/acsnano.6b04771] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Moving printed electronics to three dimensions essentially requires advanced additive manufacturing techniques yielding multifunctionality materials and high spatial resolution. Here, we report the meniscus-guided 3D printing of highly conductive multiwall carbon nanotube (MWNT) microarchitectures that exploit rapid solidification of a fluid ink meniscus formed by pulling a micronozzle. To achieve high-quality printing with continuous ink flow through a confined nozzle geometry, that is, without agglomeration and nozzle clogging, we design a polyvinylpyrrolidone-wrapped MWNT ink with uniform dispersion and appropriate rheological properties. The developed technique can produce various desired 3D microstructures, with a high MWNT concentration of up to 75 wt % being obtained via post-thermal treatment. Successful demonstrations of electronic components such as sensing transducers, emitters, and radio frequency inductors are also described herein. We expect that the technique presented in this study will facilitate selection of diverse materials in 3D printing and enhance the freedom of integration for advanced conceptual devices.
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Affiliation(s)
- Jung Hyun Kim
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) , Changwon-si, Gyeongsangnam-do 51543, Republic of Korea
| | - Sanghyeon Lee
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) , Changwon-si, Gyeongsangnam-do 51543, Republic of Korea
- Department of Electronics and Computer Engineering, Hanyang University , Seoul 133-791, Republic of Korea
| | - Muhammad Wajahat
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) , Changwon-si, Gyeongsangnam-do 51543, Republic of Korea
- Electrical Functional Material Engineering, Korea University of Science and Technology (UST) , Changwon-si, Gyeongsangnam-do 51543, Republic of Korea
| | - Hwakyung Jeong
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) , Changwon-si, Gyeongsangnam-do 51543, Republic of Korea
| | - Won Suk Chang
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) , Changwon-si, Gyeongsangnam-do 51543, Republic of Korea
- Department of Electronics and Computer Engineering, Hanyang University , Seoul 133-791, Republic of Korea
| | - Hee Jin Jeong
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) , Changwon-si, Gyeongsangnam-do 51543, Republic of Korea
| | - Jong-Ryul Yang
- Department of Electronic Engineering, Yeungnam University , 280 Daehak-ro, Gyeongsan-si, Gyeongsangbuk-do 38541, Republic of Korea
| | - Ji Tae Kim
- Department of Mechanical Engineering, The University of Hong Kong , Pokfulam Road, Hong Kong, China
| | - Seung Kwon Seol
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) , Changwon-si, Gyeongsangnam-do 51543, Republic of Korea
- Electrical Functional Material Engineering, Korea University of Science and Technology (UST) , Changwon-si, Gyeongsangnam-do 51543, Republic of Korea
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14
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Han J, Shen Y, Feng W. Using multiple hydrogen bonding cross-linkers to access reversibly responsive three dimensional graphene oxide architecture. NANOSCALE 2016; 8:14139-14145. [PMID: 27378190 DOI: 10.1039/c6nr01924b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Three-dimensional (3D) graphene materials have attracted a lot of attention for efficiently utilizing inherent properties of graphene sheets. However, 3D graphene materials reported in the previous literature are constructed through covalent or weak non-covalent interactions, causing permanent structure/property changes. In this paper, a novel 3D graphene material of dynamic interactions between lamellas with 2-ureido-4[1H]-pyrimidinone as a supra-molecular motif has been synthesized. This 3D graphene material shows enhanced sheet interactions while the cross-linking takes place. With proper solvent stimulation, the integrated 3D graphene material can disassemble as isolated sheets. The driving force for the 3D structure assembly or disassembly is considered to be the forming or breaking of the multiple hydrogen bonding pairs. Furthermore, the 3D material is used as an intelligent dye adsorber to adsorb methylene blue and release it. The controllable and reversible characteristic of this 3D graphene material may open an avenue to the synthesis and application of novel intelligent materials.
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Affiliation(s)
- Junkai Han
- School of Materials Science and Engineering, Tianjin University, P.R. China
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15
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Development of hydrophobic surface substrates enabling reproducible drop-and-dry spectroscopic measurements. Talanta 2016; 153:31-7. [DOI: 10.1016/j.talanta.2016.02.053] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 02/21/2016] [Accepted: 02/22/2016] [Indexed: 11/19/2022]
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16
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Arbab AA, Sun KC, Sahito IA, Qadir MB, Choi YS, Jeong SH. A Novel Activated-Charcoal-Doped Multiwalled Carbon Nanotube Hybrid for Quasi-Solid-State Dye-Sensitized Solar Cell Outperforming Pt Electrode. ACS APPLIED MATERIALS & INTERFACES 2016; 8:7471-7482. [PMID: 26911208 DOI: 10.1021/acsami.5b09319] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Highly conductive mesoporous carbon structures based on multiwalled carbon nanotubes (MWCNTs) and activated charcoal (AC) were synthesized by an enzymatic dispersion method. The synthesized carbon configuration consists of synchronized structures of highly conductive MWCNT and porous activated charcoal morphology. The proposed carbon structure was used as counter electrode (CE) for quasi-solid-state dye-sensitized solar cells (DSSCs). The AC-doped MWCNT hybrid showed much enhanced electrocatalytic activity (ECA) toward polymer gel electrolyte and revealed a charge transfer resistance (RCT) of 0.60 Ω, demonstrating a fast electron transport mechanism. The exceptional electrocatalytic activity and high conductivity of the AC-doped MWCNT hybrid CE are associated with its synchronized features of high surface area and electronic conductivity, which produces higher interfacial reaction with the quasi-solid electrolyte. Morphological studies confirm the forms of amorphous and conductive 3D carbon structure with high density of CNT colloid. The excessive oxygen surface groups and defect-rich structure can entrap an excessive volume of quasi-solid electrolyte and locate multiple sites for iodide/triiodide catalytic reaction. The resultant D719 DSSC composed of this novel hybrid CE fabricated with polymer gel electrolyte demonstrated an efficiency of 10.05% with a high fill factor (83%), outperforming the Pt electrode. Such facile synthesis of CE together with low cost and sustainability supports the proposed DSSCs' structure to stand out as an efficient next-generation photovoltaic device.
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Affiliation(s)
- Alvira Ayoub Arbab
- Department of Organic and Nano Engineering, Hanyang University , Seoul 133-791, South Korea
| | - Kyung Chul Sun
- Department of Fuel Cells and Hydrogen Technology, Hanyang University , Seoul 133-791, South Korea
| | - Iftikhar Ali Sahito
- Department of Organic and Nano Engineering, Hanyang University , Seoul 133-791, South Korea
| | - Muhammad Bilal Qadir
- Department of Organic and Nano Engineering, Hanyang University , Seoul 133-791, South Korea
| | - Yun Seon Choi
- Department of Organic and Nano Engineering, Hanyang University , Seoul 133-791, South Korea
| | - Sung Hoon Jeong
- Department of Organic and Nano Engineering, Hanyang University , Seoul 133-791, South Korea
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17
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Yang F, Zhang L, Zuzuarregui A, Gregorczyk K, Li L, Beltrán M, Tollan C, Brede J, Rogero C, Chuvilin A, Knez M. Functionalization of Defect Sites in Graphene with RuO2 for High Capacitive Performance. ACS APPLIED MATERIALS & INTERFACES 2015; 7:20513-20519. [PMID: 26331286 DOI: 10.1021/acsami.5b04704] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Graphene is an attractive material for its physicochemical properties, but for many applications only chemically synthesized forms such as graphene oxide (GO) and reduced graphene oxide (rGO) can be produced in sufficient amounts. If considered as electrode material, the intrinsic defects of GO or rGO may have negative influence on the conductivity and electrochemical properties. Such defects are commonly oxidized sites that offer the possibility to be functionalized with other materials in order to improve performance. In this work, we demonstrate how such ultimately efficient functionalization can be achieved: namely, through controlled binding of very small amount of materials such as RuO2 to rGO by atomic layer deposition (ALD), in this way substituting the native defect sites with RuO2 defects. For the example of a supercapacitor, we show that defect functionalization results in significantly enhanced specific capacitance of the electrode and that its energy density can be stabilized even at high consumption rates.
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Affiliation(s)
- Fan Yang
- CIC nanoGUNE Consolider , Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain
| | - Lianbing Zhang
- CIC nanoGUNE Consolider , Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain
| | - Ana Zuzuarregui
- CIC nanoGUNE Consolider , Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain
| | - Keith Gregorczyk
- CIC nanoGUNE Consolider , Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain
| | - Le Li
- CIC nanoGUNE Consolider , Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain
| | - Mikel Beltrán
- CIC nanoGUNE Consolider , Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain
| | - Christopher Tollan
- CIC nanoGUNE Consolider , Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain
| | - Jens Brede
- Centro de Física de Materiales , Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastian, Spain
| | - Celia Rogero
- Donostia International Physics Center , Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastian, Spain
- Centro de Física de Materiales , Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastian, Spain
| | - Andrey Chuvilin
- CIC nanoGUNE Consolider , Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain
- Ikerbasque, Basque Foundation for Science , Maria Diaz de Haro 3, 48013 Bilbao, Spain
| | - Mato Knez
- CIC nanoGUNE Consolider , Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain
- Ikerbasque, Basque Foundation for Science , Maria Diaz de Haro 3, 48013 Bilbao, Spain
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18
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Jeong SY, Yang S, Jeong S, Kim IJ, Jeong HJ, Han JT, Baeg KJ, Lee GW. Monolithic Graphene Trees as Anode Material for Lithium Ion Batteries with High C-Rates. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:2774-2781. [PMID: 25656352 DOI: 10.1002/smll.201403085] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 11/12/2014] [Indexed: 06/04/2023]
Abstract
Monolithically structured reduced graphene oxide (rGO), prepared from a highly concentrated and conductive rGO paste, is introduced as an anode material for lithium ion batteries with high rate capacities. This is achieved by a mixture of rGO paste and the water-soluble polymer sodium carboxymethylcellulose (SCMC) with freeze drying. Unlike previous 3D graphene porous structures, the monolithic graphene resembles densely branched pine trees and has high mechanical stability with strong adhesion to the metal electrodes. The structures contain numerous large surface area open pores that facilitate lithium ion diffusion, while the strong hydrogen bonding between the graphene layers and SCMC provides high conductivity and reduces the volume changes that occur during cycling. Ultrafast charge/discharge rates are obtained with outstanding cycling stability and the capacities are higher than those reported for other anode materials. The fabrication process is simple and straightforward to adjust and is therefore suitable for mass production of anode electrodes for commercial applications.
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Affiliation(s)
- Seung Yol Jeong
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI), Changwon, 642-120, Republic of Korea
- Department of Electrical Functionality Material Engineering, University of Science and Technology (UST), Daejon, 305-333, Republic of Korea
| | - Sunhye Yang
- Battery Research Center, Korea Electrotechnology Research Institute (KERI), Changwon, 642-120, Republic of Korea
| | - Sooyeon Jeong
- Multidimensional Nanomaterials Research Group, Korea Electrotechnology Research Institute (KERI), Changwon, 642-120, Republic of Korea
| | - Ick Jun Kim
- Battery Research Center, Korea Electrotechnology Research Institute (KERI), Changwon, 642-120, Republic of Korea
| | - Hee Jin Jeong
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI), Changwon, 642-120, Republic of Korea
| | - Joong Tark Han
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI), Changwon, 642-120, Republic of Korea
- Department of Electrical Functionality Material Engineering, University of Science and Technology (UST), Daejon, 305-333, Republic of Korea
| | - Kang-Jun Baeg
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI), Changwon, 642-120, Republic of Korea
| | - Geon-Woong Lee
- Multidimensional Nanomaterials Research Group, Korea Electrotechnology Research Institute (KERI), Changwon, 642-120, Republic of Korea
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19
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Han JT, Choi S, Jang JI, Seol SK, Woo JS, Jeong HJ, Jeong SY, Baeg KJ, Lee GW. Rearrangement of 1D conducting nanomaterials towards highly electrically conducting nanocomposite fibres for electronic textiles. Sci Rep 2015; 5:9300. [PMID: 25792333 PMCID: PMC4366813 DOI: 10.1038/srep09300] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 02/06/2015] [Indexed: 11/18/2022] Open
Abstract
Nanocarbon-based conducting fibres have been produced using solution- or dry-spinning techniques. Highly conductive polymer-composite fibres containing large amounts of conducting nanomaterials have not been produced without dispersants, however, because of the severe aggregation of conducting materials in high-concentration colloidal solutions. Here we show that highly conductive (electrical conductivity ~1.5 × 105 S m−1) polymer-composite fibres containing carbon nanotubes and silver nanowires can be fabricated via a conventional solution-spinning process without any other treatment. Spinning dopes were fabricated by a simple mixing of a polyvinyl alcohol solution in dimethylsulfoxide with a paste of long multi-walled carbon nanotubes dispersed in organic solvents, assisted by quadruple hydrogen-bonding networks and an aqueous silver nanowire dispersion. The high electrical conductivity of the fibre was achieved by rearrangement of silver nanowires towards the fibre skin during coagulation because of the selective favourable interaction between the silver nanowires and coagulation solvents. The prepared conducting fibres provide applications in electronic textiles such as a textile interconnector of light emitting diodes, flexible textile heaters, and touch gloves for capacitive touch sensors.
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Affiliation(s)
- Joong Tark Han
- 1] Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon 642-120, Republic of Korea [2] Department of Electrical Functionality Material Engineering, Korea University of Science and Technology (UST), Changwon. 642-120, Republic of Korea
| | - Sua Choi
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon 642-120, Republic of Korea
| | - Jeong In Jang
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon 642-120, Republic of Korea
| | - Seung Kwon Seol
- 1] Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon 642-120, Republic of Korea [2] Department of Electrical Functionality Material Engineering, Korea University of Science and Technology (UST), Changwon. 642-120, Republic of Korea
| | - Jong Seok Woo
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon 642-120, Republic of Korea
| | - Hee Jin Jeong
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon 642-120, Republic of Korea
| | - Seung Yol Jeong
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon 642-120, Republic of Korea
| | - Kang-Jun Baeg
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon 642-120, Republic of Korea
| | - Geon-Woong Lee
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon 642-120, Republic of Korea
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20
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Shao Y, El-Kady MF, Wang LJ, Zhang Q, Li Y, Wang H, Mousavi MF, Kaner RB. Graphene-based materials for flexible supercapacitors. Chem Soc Rev 2015; 44:3639-65. [DOI: 10.1039/c4cs00316k] [Citation(s) in RCA: 870] [Impact Index Per Article: 96.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The recent advances in developing graphene-based materials for flexible supercapacitors are summarized in this review.
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Affiliation(s)
- Yuanlong Shao
- Department of Chemistry and Biochemistry and California NanoSystems Institute
- University of California
- Los Angeles (UCLA)
- Los Angeles
- USA
| | - Maher F. El-Kady
- Department of Chemistry and Biochemistry and California NanoSystems Institute
- University of California
- Los Angeles (UCLA)
- Los Angeles
- USA
| | - Lisa J. Wang
- Department of Chemistry and Biochemistry and California NanoSystems Institute
- University of California
- Los Angeles (UCLA)
- Los Angeles
- USA
| | - Qinghong Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Material Science and Engineering
- Donghua University
- Shanghai
- China
| | - Yaogang Li
- Engineering Research Center of Advanced Glasses Manufacturing Technology
- Ministry of Education
- Donghua University
- Shanghai
- China
| | - Hongzhi Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Material Science and Engineering
- Donghua University
- Shanghai
- China
| | - Mir F. Mousavi
- Department of Chemistry and Biochemistry and California NanoSystems Institute
- University of California
- Los Angeles (UCLA)
- Los Angeles
- USA
| | - Richard B. Kaner
- Department of Chemistry and Biochemistry and California NanoSystems Institute
- University of California
- Los Angeles (UCLA)
- Los Angeles
- USA
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21
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Han JT, Jang JI, Kim H, Hwang JY, Yoo HK, Woo JS, Choi S, Kim HY, Jeong HJ, Jeong SY, Baeg KJ, Cho K, Lee GW. Extremely efficient liquid exfoliation and dispersion of layered materials by unusual acoustic cavitation. Sci Rep 2014; 4:5133. [PMID: 24875584 PMCID: PMC4038810 DOI: 10.1038/srep05133] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 05/14/2014] [Indexed: 11/09/2022] Open
Abstract
Layered materials must be exfoliated and dispersed in solvents for diverse applications. Usually, highly energetic probe sonication may be considered to be an unfavourable method for the less defective exfoliation and dispersion of layered materials. Here we show that judicious use of ultrasonic cavitation can produce exfoliated transition metal dichalcogenide nanosheets extraordinarily dispersed in non-toxic solvent by minimising the sonolysis of solvent molecules. Our method can also lead to produce less defective, large graphene oxide nanosheets from graphite oxide in a short time (within 10 min), which show high electrical conductivity (>20,000 S m−1) of the printed film. This was achieved by adjusting the ultrasonic probe depth to the liquid surface to generate less energetic cavitation (delivered power ~6 W), while maintaining sufficient acoustic shearing (0.73 m s−1) and generating additional microbubbling by aeration at the liquid surface.
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Affiliation(s)
- Joong Tark Han
- 1] Multidimensional Nanomaterials Research Group, Korea Electrotechnology Research Institute (KERI), Changwon 642-120, Republic of Korea [2] Department of Electrical Functionality Material Engineering, Korea University of Science and Technology (UST), Daejon, 305-333, Republic of Korea
| | - Jeong In Jang
- Multidimensional Nanomaterials Research Group, Korea Electrotechnology Research Institute (KERI), Changwon 642-120, Republic of Korea
| | - Haena Kim
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Republic of Korea
| | - Jun Yeon Hwang
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Eunha-ri san 101, Bondong-eup, Wanju-gun, Jeolabuk-do, 565-905, Republic of Korea
| | - Hyung Keun Yoo
- Nanophotonics Laboratory, Advanced Photonics Research Institute, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea
| | - Jong Seok Woo
- Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute (KERI), Changwon 642-120, Republic of Korea
| | - Sua Choi
- Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute (KERI), Changwon 642-120, Republic of Korea
| | - Ho Young Kim
- Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute (KERI), Changwon 642-120, Republic of Korea
| | - Hee Jin Jeong
- Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute (KERI), Changwon 642-120, Republic of Korea
| | - Seung Yol Jeong
- Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute (KERI), Changwon 642-120, Republic of Korea
| | - Kang-Jun Baeg
- Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute (KERI), Changwon 642-120, Republic of Korea
| | - Kilwon Cho
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Republic of Korea
| | - Geon-Woong Lee
- Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute (KERI), Changwon 642-120, Republic of Korea
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22
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Jeong HJ, Kim HY, Jeong H, Han JT, Jeong SY, Baeg KJ, Jeong MS, Lee GW. One-step transfer and integration of multifunctionality in CVD graphene by TiO₂/graphene oxide hybrid layer. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:2057-2066. [PMID: 24578338 DOI: 10.1002/smll.201303541] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 01/02/2014] [Indexed: 06/03/2023]
Abstract
We present a straightforward method for simultaneously enhancing the electrical conductivity, environmental stability, and photocatalytic properties of graphene films through one-step transfer of CVD graphene and integration by introducing TiO2/graphene oxide layer. A highly durable and flexible TiO2 layer is successfully used as a supporting layer for graphene transfer instead of the commonly used PMMA. Transferred graphene/TiO2 film is directly used for measuring the carrier transport and optoelectronic properties without an extra TiO2 removal and following deposition steps for multifunctional integration into devices because the thin TiO2 layer is optically transparent and electrically semiconducting. Moreover, the TiO2 layer induces charge screening by electrostatically interacting with the residual oxygen moieties on graphene, which are charge scattering centers, resulting in a reduced current hysteresis. Adsorption of water and other chemical molecules onto the graphene surface is also prevented by the passivating TiO2 layer, resulting in the long term environmental stability of the graphene under high temperature and humidity. In addition, the graphene/TiO2 film shows effectively enhanced photocatalytic properties because of the increase in the transport efficiency of the photogenerated electrons due to the decrease in the injection barrier formed at the interface between the F-doped tin oxide and TiO2 layers.
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Affiliation(s)
- Hee Jin Jeong
- Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute (KERI), Changwon, 641-120, (Korea)
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23
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Electrically robust metal nanowire network formation by in-situ interconnection with single-walled carbon nanotubes. Sci Rep 2014; 4:4804. [PMID: 24763208 PMCID: PMC3999447 DOI: 10.1038/srep04804] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 04/09/2014] [Indexed: 11/13/2022] Open
Abstract
Modulation of the junction resistance between metallic nanowires is a crucial factor for high performance of the network-structured conducting film. Here, we show that under current flow, silver nanowire (AgNW) network films can be stabilised by minimizing the Joule heating at the NW-NW junction assisted by in-situ interconnection with a small amount (less than 3 wt%) of single-walled carbon nanotubes (SWCNTs). This was achieved by direct deposition of AgNW suspension containing SWCNTs functionalised with quadruple hydrogen bonding moieties excluding dispersant molecules. The electrical stabilisation mechanism of AgNW networks involves the modulation of the electrical transportation pathway by the SWCNTs through the SWCNT-AgNW junctions, which results in a relatively lower junction resistance than the NW-NW junction in the network film. In addition, we propose that good contact and Fermi level matching between AgNWs and modified SWCNTs lead to the modulation of the current pathway. The SWCNT-induced stabilisation of the AgNW networks was also demonstrated by irradiating the film with microwaves. The development of the high-throughput fabrication technology provides a robust and scalable strategy for realizing high-performance flexible transparent conductor films.
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