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Li S, Li Z. Flexible Asymmetric Supercapacitors Constructed by Reduced Graphene Oxide/MoO 3 and MnO 2 Electrochemically Deposited on Carbon Cloth. Molecules 2024; 29:3116. [PMID: 38999068 PMCID: PMC11243340 DOI: 10.3390/molecules29133116] [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: 05/23/2024] [Revised: 06/25/2024] [Accepted: 06/26/2024] [Indexed: 07/14/2024] Open
Abstract
A flexible asymmetric supercapacitor (ASC) is successfully developed by using the composite of MoO3 and graphene oxide (GO) electrochemically deposited on carbon cloth (CC) (MoO3/rGO/CC) as the cathode, the MnO2 deposited on CC (MnO2/CC) as the anode, and Na2SO4/polyvinyl alcohol (PVA) as the gel electrolyte. The results show that the introduction of the GO layer can remarkably increase the specific capacitance of MoO3 from 282.7 F g-1 to 341.0 F g-1. Furthermore, the combination of such good electrode materials and a neutral gel electrolyte renders the fabrication of high-performance ASC with a large operating potential difference of 1.6 V in a 0.5 mol L-1 Na2SO4 solution of water. Furthermore, the ASCs exhibit excellent cycle ability and the capacitance can maintain 87% of its initial value after 6000 cycles. The fact that a light-emitting diode can be lit up by the ASCs indicates the device's potential applications as an energy storage device. The encouraging results demonstrate a promising application of the composite of MoO3 and GO in energy storage devices.
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Affiliation(s)
- Sha Li
- Department of Chemistry, Xinzhou Teachers University, Xinzhou 034000, China;
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2
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Nargatti K, Ahankari SS, Dizon JRC, Subramaniam RT. Environmentally Friendly Water-Based Reduced Graphene Oxide/Cellulose Nanofiber Ink for Supercapacitor Electrode Applications. ACS OMEGA 2024; 9:11730-11737. [PMID: 38496988 PMCID: PMC10938331 DOI: 10.1021/acsomega.3c09139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 01/23/2024] [Accepted: 01/29/2024] [Indexed: 03/19/2024]
Abstract
The agglomeration of reduced graphene oxide (rGO) in water makes the development of rGO inks for supercapacitor printing challenging. Cellulose nanofiber (CNF), a biodegradable and renewable nanomaterial, can act as a nanospacer, preventing the agglomeration and restacking of rGO flakes. In this work, rGO/CNF films were fabricated using an environmentally friendly water-based rGO/CNF ink. In the absence of an additional binder/surfactant, the rGO/CNF films demonstrated remarkably enhanced hydrophilicity while retaining good electrical conductivity. The concentration of CNF was varied to observe the variation in the electrochemical performance. At a current density of 1 mA/cm2, the rGO/CNF-15 film exhibited a maximum areal capacitance of 98.61 mF/cm2, closely matching that of pure rGO films. Because of its excellent electrical performance, ease of manufacturing, and environmental friendliness, this water-based rGO/CNF ink may have promising applications in the printing of supercapacitor electrodes.
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Affiliation(s)
- Kiran
I. Nargatti
- School
of Mechanical Engineering, Vellore Institute
of Technology, Vellore, Tamil Nadu 632014, India
| | - Sandeep S. Ahankari
- School
of Mechanical Engineering, Vellore Institute
of Technology, Vellore, Tamil Nadu 632014, India
| | - John Ryan C. Dizon
- DR3AM
Center, Bataan Peninsula State University-Main
Campus, City of
Balanga, Bataan 2100, Philippines
| | - Ramesh T. Subramaniam
- Department
of Physics, Faculty of Science, Universiti
Malaya, Kuala
Lumpur 50603, Malaysia
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3
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Ioni Y, Popova A, Maksimov S, Kozerozhets I. Ni Nanoparticles on the Reduced Graphene Oxide Surface Synthesized in Supercritical Isopropanol. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2923. [PMID: 37999277 PMCID: PMC10674343 DOI: 10.3390/nano13222923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 11/06/2023] [Accepted: 11/08/2023] [Indexed: 11/25/2023]
Abstract
Nanocomposites based on ferromagnetic nickel nanoparticles and graphene-related materials are actively used in various practical applications such as catalysis, sensors, sorption, etc. Therefore, maintaining their dispersity and homogeneity during deposition onto the reduced graphene oxide substrate surface is of crucial importance to provide the required product characteristics. This paper demonstrates a new, reproducible method for preparing a tailored composite based on nickel nanoparticles on the reduced graphene oxide surface using supercritical isopropanol treatment. It has been shown that when a graphene oxide film with previously incorporated Ni2+ salt is treated with isopropanol at supercritical conditions, nickel (2+) is reduced to Ni (0), with simultaneous deoxygenation of the graphene oxide substrate. The resulting composite is a solid film exhibiting magnetic properties. XRD, FTIR, Raman, TEM, and HRTEM methods were used to study all the obtained materials. It was shown that nickel nanoparticles on the surface of the reduced graphene oxide had an average diameter of 27 nm and were gradually distributed on the surface of reduced graphene oxide sheets. The data obtained allowed us to conduct a reconnaissance discussion of the mechanism of composite fabrication in supercritical isopropanol.
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Affiliation(s)
- Yulia Ioni
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Anna Popova
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Sergey Maksimov
- Department of Chemistry, Moscow State University, 119991 Moscow, Russia
| | - Irina Kozerozhets
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
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Wang X, Li W, Xu Y, Xue Y, Si D, Zhu R, Liu J, Zhou C, Chen Y, Wang G. NiCoP/C composite with hollow sphere as electrodes for high performance supercapacitors. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Recent advances in flexible supercapacitors. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-022-05291-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Trache D, Tarchoun AF, Abdelaziz A, Bessa W, Hussin MH, Brosse N, Thakur VK. Cellulose nanofibrils-graphene hybrids: recent advances in fabrication, properties, and applications. NANOSCALE 2022; 14:12515-12546. [PMID: 35983896 DOI: 10.1039/d2nr01967a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
With the fast-developing social economy and the acceleration of industrialization, seeking effective renewable, sustainable, and environmentally friendly resources that show promising properties is an urgent task and a crucial means to achieve sustainable progress in the face of the growing depletion of non-renewable resources and the deterioration of environmental issues. Cellulose nanofibrils (CNFs) are natural polymeric nanomaterials with excellent biocompatibility, biodegradability, good mechanical features, high strength, low density, high specific surface area, and tunable chemistry. Their combination with other nanomaterials, such as graphene derivatives (GNMs), has been demonstrated to be effective since they produce hybrids with outstanding physicochemical properties, tailorable functionality, and high performance. In this review, recent advances in the preparation, modification, and emerging application of CNFs/GNMs hybrids are described and discussed using the latest studies. First, the concise background of nanocellulose and graphene derivatives is provided, followed by the interfacial interactions between CNFs and GNMs. The different hybrids exhibit great promise in separation, adsorption, optics, flexible electronics, energy storage, thermal management, barrier and packaging, and electromagnetic shielding. The main challenges that inhibit the applicability of these hybrids are finally highlighted, and some perspectives for future research directions are provided.
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Affiliation(s)
- Djalal Trache
- Energetic Materials Laboratory, Teaching and Research Unit of Energetic Processes, Ecole Militaire Polytechnique, BP 17, Bordj El-Bahri, 16046, Algiers, Algeria.
| | - Ahmed Fouzi Tarchoun
- Energetic Propulsion Laboratory, Teaching and Research Unit of Energetic Processes, Ecole Militaire Polytechnique, BP 17, Bordj El-Bahri, 16046, Algiers, Algeria
| | - Amir Abdelaziz
- Energetic Materials Laboratory, Teaching and Research Unit of Energetic Processes, Ecole Militaire Polytechnique, BP 17, Bordj El-Bahri, 16046, Algiers, Algeria.
| | - Wissam Bessa
- Energetic Materials Laboratory, Teaching and Research Unit of Energetic Processes, Ecole Militaire Polytechnique, BP 17, Bordj El-Bahri, 16046, Algiers, Algeria.
| | - M Hazwan Hussin
- Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Nicolas Brosse
- Laboratoire d'Etude et de Recherche sur le MAtériau Bois (LERMAB), Faculté des Sciences et Techniques, Université de Lorraine, Bld. des Aiguillettes, F-54500, Vandœuvre-lès-Nancy, France
| | - Vijay Kumar Thakur
- Biorefining and Advanced Materials Research Center, Scotland's Rural College (SRUC), Kings Buildings, Edinburgh EH9 3JG, UK
- School of Engineering, University of Petroleum and Energy Studies (UPES), Dehradun, 248007 Uttarakhand, India
- Centre for Research and Development, Chandigarh University, Mohali, 140413 Punjab, India
- Department of Biotechnology, Graphic Era Deemed to be University, Dehradun 248002, Uttarakhand, India
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7
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Heng Y, Xu D, Fang H, Zhong C, Hu D. Design of a Cellulose-Based Supercapacitor Based on Polymerization-Doping Phase Inversion of a Polydopamine-Modified Separator and a Polypyrrole/Graphene-Doped Membrane Electrode. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:6539-6549. [PMID: 35584369 DOI: 10.1021/acs.langmuir.2c00131] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The cellulose-based polydopamine modified separator (LID-PDA) and polydopamine/graphene/polypyrrole modified electrode (LID-PDA-GR/PPy) were successfully fabricated by dissolving-regenerating and phase-inversion methods via dopamine polymerization and doping modification of graphene (GR) and polypyrrole (PPy) in a lithium chloride/N,N-dimethylacetamide solvent system. The structure and physical properties of the LID-PDA film material play a positive role in its application in supercapacitor separators and electrodes. The effect of PPy content on the electrochemical performance of the electrode shows that the LID-PDA-GR/PPy-30 electrode has the best performance (2.2 Ω, 237.2 F/g at 0.5 A/g). The cellulose-based supercapacitor assembled from the LID-PDA-GR/PPy-30 electrode and LID-PDA separator shows good electrochemical energy storage properties (439.0 F/g at 0.2 A/g, 36.2 Wh/kg corresponding to 2.2 kW/kg). Based on the microstructural properties of natural and renewable cellulose substrates, combining polymerization and doping to realize the complementarity between materials is meaningful for the application and development of energy storage materials.
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Affiliation(s)
- Yingqi Heng
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, China
- MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Guangxi University, Nanning 530004, China
| | - Daman Xu
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, China
- MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Guangxi University, Nanning 530004, China
| | - Heng Fang
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, China
- MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Guangxi University, Nanning 530004, China
| | - Chengjin Zhong
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, China
- MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Guangxi University, Nanning 530004, China
| | - Dongying Hu
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, China
- MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Guangxi University, Nanning 530004, China
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8
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Laser-Induced Interdigital Structured Graphene Electrodes Based Flexible Micro-Supercapacitor for Efficient Peak Energy Storage. Molecules 2022; 27:molecules27010329. [PMID: 35011558 PMCID: PMC8746467 DOI: 10.3390/molecules27010329] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/24/2021] [Accepted: 01/01/2022] [Indexed: 01/31/2023] Open
Abstract
The rapidly developing demand for lightweight portable electronics has accelerated advanced research on self-powered microsystems (SPMs) for peak power energy storage (ESs). In recent years, there has been, in this regard, a huge research interest in micro-supercapacitors for microelectronics application over micro-batteries due to their advantages of fast charge–discharge rate, high power density and long cycle-life. In this work, the optimization and fabrication of micro-supercapacitors (MSCs) by means of laser-induced interdigital structured graphene electrodes (LIG) has been reported. The flexible and scalable MSCs are fabricated by CO2-laser structuring of polyimide-based Kapton ® HN foils at ambient temperature yielding interdigital LIG-electrodes and using polymer gel electrolyte (PGE) produced by polypropylene carbonate (PPC) embedded ionic liquid of 1-ethyl-3-methyl-imidazolium-trifluoromethansulphonate [EMIM][OTf]. This MSC exhibits a wide stable potential window up to 2.0 V, offering an areal capacitance of 1.75 mF/cm2 at a scan rate of 5.0 mV/s resulting in an energy density (Ea) of 0.256 µWh/cm2 @ 0.03 mA/cm2 and power density (Pa) of 0.11 mW/cm2 @0.1 mA/cm2. Overall electrochemical performance of this LIG/PGE-MSC is rounded with a good cyclic stability up to 10,000 cycles demonstrating its potential in terms of peak energy storage ability compared to the current thin film micro-supercapacitors.
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Oyekanmi AA, Saharudin NI, Hazwan CM, H. P. S. AK, Olaiya NG, Abdullah CK, Alfatah T, Gopakumar DA, Pasquini D. Improved Hydrophobicity of Macroalgae Biopolymer Film Incorporated with Kenaf Derived CNF Using Silane Coupling Agent. Molecules 2021; 26:molecules26082254. [PMID: 33924692 PMCID: PMC8069814 DOI: 10.3390/molecules26082254] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/25/2021] [Accepted: 04/05/2021] [Indexed: 11/19/2022] Open
Abstract
Hydrophilic behaviour of carrageenan macroalgae biopolymer, due to hydroxyl groups, has limited its applications, especially for packaging. In this study, macroalgae were reinforced with cellulose nanofibrils (CNFs) isolated from kenaf bast fibres. The macroalgae CNF film was after that treated with silane for hydrophobicity enhancement. The wettability and functional properties of unmodified macroalgae CNF films were compared with silane-modified macroalgae CNF films. Characterisation of the unmodified and modified biopolymers films was investigated. The atomic force microscope (AFM), SEM morphology, tensile properties, water contact angle, and thermal behaviour of the biofilms showed that the incorporation of Kenaf bast CNF remarkably increased the strength, moisture resistance, and thermal stability of the macroalgae biopolymer films. Moreover, the films’ modification using a silane coupling agent further enhanced the strength and thermal stability of the films apart from improved water-resistance of the biopolymer films compared to unmodified films. The morphology and AFM showed good interfacial interaction of the components of the biopolymer films. The modified biopolymer films exhibited significantly improved hydrophobic properties compared to the unmodified films due to the enhanced dispersion resulting from the silane treatment. The improved biopolymer films can potentially be utilised as packaging materials.
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Affiliation(s)
- Adeleke A. Oyekanmi
- School of Industrial Technology, University Sains Malaysia, Penang 11800, Malaysia; (A.A.O.); (N.G.O.); (C.K.A.); (T.A.); (D.A.G.)
| | - N. I. Saharudin
- School of Industrial Technology, University Sains Malaysia, Penang 11800, Malaysia; (A.A.O.); (N.G.O.); (C.K.A.); (T.A.); (D.A.G.)
- Correspondence: (N.I.S.); (C.M.H.); (A.K.H.P.S.)
| | - Che Mohamad Hazwan
- School of Industrial Technology, University Sains Malaysia, Penang 11800, Malaysia; (A.A.O.); (N.G.O.); (C.K.A.); (T.A.); (D.A.G.)
- Correspondence: (N.I.S.); (C.M.H.); (A.K.H.P.S.)
| | - Abdul Khalil H. P. S.
- School of Industrial Technology, University Sains Malaysia, Penang 11800, Malaysia; (A.A.O.); (N.G.O.); (C.K.A.); (T.A.); (D.A.G.)
- Correspondence: (N.I.S.); (C.M.H.); (A.K.H.P.S.)
| | - Niyi G. Olaiya
- School of Industrial Technology, University Sains Malaysia, Penang 11800, Malaysia; (A.A.O.); (N.G.O.); (C.K.A.); (T.A.); (D.A.G.)
| | - Che K. Abdullah
- School of Industrial Technology, University Sains Malaysia, Penang 11800, Malaysia; (A.A.O.); (N.G.O.); (C.K.A.); (T.A.); (D.A.G.)
| | - Tata Alfatah
- School of Industrial Technology, University Sains Malaysia, Penang 11800, Malaysia; (A.A.O.); (N.G.O.); (C.K.A.); (T.A.); (D.A.G.)
| | - Deepu A. Gopakumar
- School of Industrial Technology, University Sains Malaysia, Penang 11800, Malaysia; (A.A.O.); (N.G.O.); (C.K.A.); (T.A.); (D.A.G.)
| | - Daniel Pasquini
- Chemistry Institute, Federal University of Uberlandia-UFU, Uberlândia 38400-902, Brazil;
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Application of Octanohydroxamic Acid for Salting out Liquid-Liquid Extraction of Materials for Energy Storage in Supercapacitors. Molecules 2021; 26:molecules26020296. [PMID: 33435538 PMCID: PMC7826554 DOI: 10.3390/molecules26020296] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/30/2020] [Accepted: 01/05/2021] [Indexed: 02/07/2023] Open
Abstract
The ability to achieve high areal capacitance for oxide-based supercapacitor electrodes with high active mass loadings is critical for practical applications. This paper reports the feasibility of the fabrication of Mn3O4-multiwalled carbon nanotube (MWCNT) composites by the new salting-out method, which allows direct particle transfer from an aqueous synthesis medium to a 2-propanol suspension for the fabrication of advanced Mn3O4-MWCNT electrodes for supercapacitors. The electrodes show enhanced capacitive performance at high active mass loading due to reduced particle agglomeration and enhanced mixing of the Mn3O4 particles and conductive MWCNT additives. The strategy is based on the multifunctional properties of octanohydroxamic acid, which is used as a capping and dispersing agent for Mn3O4 synthesis and an extractor for particle transfer to the electrode processing medium. Electrochemical studies show that high areal capacitance is achieved at low electrode resistance. The electrodes with an active mass of 40.1 mg cm-2 show a capacitance of 4.3 F cm-2 at a scan rate of 2 mV s-1. Electron microscopy studies reveal changes in electrode microstructure during charge-discharge cycling, which can explain the increase in capacitance. The salting-out method is promising for the development of advanced nanocomposites for energy storage in supercapacitors.
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Lu M, He W, Li Z, Qiang H, Cao J, Guo F, Wang R, Guo Z. Effect of Lignin Content on Properties of Flexible Transparent Poplar Veneer Fabricated by Impregnation with Epoxy Resin. Polymers (Basel) 2020; 12:E2602. [PMID: 33167577 PMCID: PMC7694516 DOI: 10.3390/polym12112602] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 10/28/2020] [Accepted: 10/29/2020] [Indexed: 01/07/2023] Open
Abstract
In this work, poplar veneer (PV) rotary-cut from fast-growing polar was delignified to prepare flexible transparent poplar veneer (TPV). Lignin was gradually removed from the PV and then epoxy resin filled into the delignified PV. The study mainly concerns the effect of lignin content on microstructure, light transmittance, haze, tensile strength, and thermal stability of the PVs impregnated with epoxy resin. The results indicate that the lignin could be removed completely from the PV when the delignification time was around 8 h, which was proved by FTIR spectra and chemical component detection. Moreover, according to SEM observation and XRD testing, the porosity and crystallinity of the PVs were gradually increased with the removal of lignin. Also, the optical properties measurement indicated that the light transmittance and haze of the TPVs gradually increased, and the thermal stability also became more stable as shown by thermogravimetric analysis (TG). However, the tensile strength of the TPVs declined due to the removal of lignin. Among them, TPV8 exhibited excellent optical properties, thermal stability, and tensile strength. Consequently, it has great potential to be used as a substrate in photovoltaics, solar cells, smart windows, etc.
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Affiliation(s)
- Mengting Lu
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (M.L.); (Z.L.); (H.Q.); (J.C.); (F.G.); (R.W.); (Z.G.)
| | - Wen He
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (M.L.); (Z.L.); (H.Q.); (J.C.); (F.G.); (R.W.); (Z.G.)
- Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Foresry University, Nanjing 210037, China
| | - Ze Li
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (M.L.); (Z.L.); (H.Q.); (J.C.); (F.G.); (R.W.); (Z.G.)
| | - Han Qiang
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (M.L.); (Z.L.); (H.Q.); (J.C.); (F.G.); (R.W.); (Z.G.)
| | - Jizhou Cao
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (M.L.); (Z.L.); (H.Q.); (J.C.); (F.G.); (R.W.); (Z.G.)
| | - Feiyu Guo
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (M.L.); (Z.L.); (H.Q.); (J.C.); (F.G.); (R.W.); (Z.G.)
| | - Rui Wang
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (M.L.); (Z.L.); (H.Q.); (J.C.); (F.G.); (R.W.); (Z.G.)
| | - Zhihao Guo
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (M.L.); (Z.L.); (H.Q.); (J.C.); (F.G.); (R.W.); (Z.G.)
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Zhuo B, Cao S, Li X, Liang J, Bei Z, Yang Y, Yuan Q. A Nanofibrillated Cellulose-Based Electrothermal Aerogel Constructed with Carbon Nanotubes and Graphene. Molecules 2020; 25:molecules25173836. [PMID: 32846907 PMCID: PMC7503273 DOI: 10.3390/molecules25173836] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 08/14/2020] [Accepted: 08/14/2020] [Indexed: 11/16/2022] Open
Abstract
Nanofibrillated cellulose (NFC) as an environmentally friendly substrate material has superiority for flexible electrothermal composite, while there is currently no research on porous NFC based electrothermal aerogel. Therefore, this work used NFC as a skeleton, combined with multi-walled carbon nanotubes (MWCNTs) and graphene (GP), to prepare NFC/MWCNTs/GP aerogel (CCGA) via a simple and economic freeze-drying method. The electrothermal CCGA was finally assembled after connecting CCGA with electrodes. The results show that when the concentration of the NFC/MWCNTs/GP suspension was 5 mg mL-1 and NFC amount was 80 wt.%, the maximum steady-state temperature rise of electrothermal CCGA at 3000 W m-2 and 2000 W m-2 was of about 62.0 °C and 40.4 °C, respectively. The resistance change rate of the CCGA was nearly 15% at the concentration of 7 mg mL-1 under the power density of 2000 W m-2. The formed three-dimensional porous structure is conducive to the heat exchange. Consequently, the electrothermal CCGA can be used as a potential lightweight substrate for efficient electrothermal devices.
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