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Lv Y, Gong C, Dong Y, Choi HJ. Synthesis of rGO/CoFe 2O 4 Composite and Its Magnetorheological Characteristics. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1859. [PMID: 38673216 PMCID: PMC11051295 DOI: 10.3390/ma17081859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/09/2024] [Accepted: 04/13/2024] [Indexed: 04/28/2024]
Abstract
In this study, composite particles of rGO/CoFe2O4 were synthesized using a solvothermal method to fabricate a low-density magnetorheological (MR) material with enhanced sedimentation stability. The morphology and crystallographic features of rGO/CoFe2O4 were characterized via SEM, TEM, and XRD, and its magnetic properties were tested using VSM. The MR fluid was formulated by blending rGO/CoFe2O4 particles into silicone oil. Under different magnet strengths (H), a rotational rheometer was used to test its MR properties. Typical MR properties were observed, including shear stress, viscosity, storage/loss modulus, and dynamic yield stress (τdy) following the Herschel-Bulkley model reaching 200 Pa when H is 342 kA/m. Furthermore, the yield stress of the MR fluid follows a power law relation as H increases and the index changes from 2.0 (in the low H region) to 1.5 (in the high H region). Finally, its MR efficiency was calculated to be about 104% at H of 342 kA/m.
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Affiliation(s)
- Yang Lv
- School of Materials Science and Engineering, Harbin Institute of Technology Weihai, 2 West Wenhua Road, Weihai 264209, China; (Y.L.); (C.G.)
| | - Chengjie Gong
- School of Materials Science and Engineering, Harbin Institute of Technology Weihai, 2 West Wenhua Road, Weihai 264209, China; (Y.L.); (C.G.)
| | - Yuzhen Dong
- School of Materials Science and Engineering, Harbin Institute of Technology Weihai, 2 West Wenhua Road, Weihai 264209, China; (Y.L.); (C.G.)
| | - Hyoung Jin Choi
- Department of Polymer Science and Engineering, Inha University, Incheon 22212, Republic of Korea
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2
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Kouchi K, Tayoury M, Chari A, Hdidou L, Chchiyai Z, El Kamouny K, Tamraoui Y, Manoun B, Alami J, Dahbi M. Carbon-coated Ni 0.5Mg 0.5Fe 1.7Mn 0.3O 4 nanoparticles as a novel anode material for high energy density lithium-ion batteries. Phys Chem Chem Phys 2024; 26:7492-7503. [PMID: 38356390 DOI: 10.1039/d4cp00182f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Lithium-ion batteries (LIBs) have gained considerable attention from the scientific community due to their outstanding properties, such as high energy density, low self-discharge, and environmental sustainability. Among the prominent candidates for anode materials in next-generation LIBs are the spinel ferrites, represented by the MFe2O4 series, which offer exceptional theoretical capacities, excellent reversibility, cost-effectiveness, and eco-friendliness. In the scope of this study, Ni0.5Mg0.5Fe1.7Mn0.3O4 nanoparticles were synthesized using a sol-gel synthesis method and subsequently coated with a carbon layer to further enhance their electrochemical performance. TEM images confirmed the presence of the carbon coating layer on the Ni0.5Mg0.5Fe1.7Mn0.3O4/C composite. The analysis of the measured X-ray diffraction (XRD) and Raman spectroscopy results confirmed the formation of nanocrystalline Ni0.5Mg0.5Fe1.7Mn0.3O4 before coating and amorphous carbon in the Ni0.5Mg0.5Fe1.7Mn0.3O4/C after the coating. The Ni0.5Mg0.5Fe1.7Mn0.3O4 anode material exhibited a much higher specific capacity than the traditional graphite material, with initial discharge/charge capacities of 1275 and 874 mA h g-1, respectively, at a 100 mA g-1 current density and a first coulombic efficiency of 68.54%. The long-term cycling test showed a slight capacity fading, retaining approximately 85% of its initial capacity after 75 cycles. Notably, the carbon-coating layer greatly enhanced the stability and slightly increased the capacity of the as-prepared Ni0.5Mg0.5Fe1.7Mn0.3O4. The first discharge/charge capacities of Ni0.5Mg0.5Fe1.7Mn0.3O4/C at 100 mA g-1 current density reached 1032 and 723 mA h g-1, respectively, and a first coulombic efficiency of 70.06%, with an increase of discharge/charge capacities to 826.6 and 806.2 mA h g-1, respectively, after 75 cycles (with a capacity retention of 89.7%), and a high-rate capability of 372 mA h g-1 at 2C. Additionally, a full cell was designed using a Ni0.5Mg0.5Fe1.7Mn0.3O4/C anode and an NMC811 cathode. The output voltage was about 2.8 V, with a high initial specific capacity of 755 mA h g-1 at 0.125C, a high rate-capability of 448 mA h g-1 at 2C, and a high-capacity retention of 91% after 30 cycles at 2C. The carbon coating layer on Ni0.5Mg0.5Fe1.7Mn0.3O4 nanoparticles played a crucial role in the excellent electrochemical performance, providing conducting, buffering, and protective effects.
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Affiliation(s)
- Khadija Kouchi
- Materials Science, Energy, and Nano-engineering Department, Mohammed VI Polytechnic University, Lot 660-Hay Moulay Rachid, 43150, Ben Guerir, Morocco.
| | - Marwa Tayoury
- Materials Science, Energy, and Nano-engineering Department, Mohammed VI Polytechnic University, Lot 660-Hay Moulay Rachid, 43150, Ben Guerir, Morocco.
| | - Abdelwahed Chari
- Materials Science, Energy, and Nano-engineering Department, Mohammed VI Polytechnic University, Lot 660-Hay Moulay Rachid, 43150, Ben Guerir, Morocco.
| | - Loubna Hdidou
- Materials Science, Energy, and Nano-engineering Department, Mohammed VI Polytechnic University, Lot 660-Hay Moulay Rachid, 43150, Ben Guerir, Morocco.
| | - Zakaria Chchiyai
- Hassan First University, FST Settat, Rayonnement-Matière et Instrumentation, S3M, 26000, Settat, Morocco
| | - Khadija El Kamouny
- Green Tech Institute Department, Mohammed VI Polytechnic University UM6P, Ben Guerir, Morocco
| | - Youssef Tamraoui
- Materials Science, Energy, and Nano-engineering Department, Mohammed VI Polytechnic University, Lot 660-Hay Moulay Rachid, 43150, Ben Guerir, Morocco.
| | - Bouchaib Manoun
- Materials Science, Energy, and Nano-engineering Department, Mohammed VI Polytechnic University, Lot 660-Hay Moulay Rachid, 43150, Ben Guerir, Morocco.
- Hassan First University, FST Settat, Rayonnement-Matière et Instrumentation, S3M, 26000, Settat, Morocco
| | - Jones Alami
- Materials Science, Energy, and Nano-engineering Department, Mohammed VI Polytechnic University, Lot 660-Hay Moulay Rachid, 43150, Ben Guerir, Morocco.
| | - Mouad Dahbi
- Materials Science, Energy, and Nano-engineering Department, Mohammed VI Polytechnic University, Lot 660-Hay Moulay Rachid, 43150, Ben Guerir, Morocco.
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Alotaibi M, Bakht MA, Alharthi AA. Synthesis, Characterization of CoFe 2O 4 and CoAl 0.8Fe 2O 4: A Novel Catalyst for the Synthesis of 12-Aryl/Hetroaryl-8,9,10,12-Tetrahydrobenzo[ a]Xanthen-11-Ones Derivatives in Semi-Aqueous Condition. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2072910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Mshari Alotaibi
- Department of Chemistry, College of Science and Humanity Studies, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Md. Afroz Bakht
- Department of Chemistry, College of Science and Humanity Studies, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Abdulrahman A. Alharthi
- Department of Chemistry, College of Science and Humanity Studies, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
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Salles P, Guzmán R, Zanders D, Quintana A, Fina I, Sánchez F, Zhou W, Devi A, Coll M. Bendable Polycrystalline and Magnetic CoFe 2O 4 Membranes by Chemical Methods. ACS APPLIED MATERIALS & INTERFACES 2022; 14:12845-12854. [PMID: 35232015 PMCID: PMC8931725 DOI: 10.1021/acsami.1c24450] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
The preparation and manipulation of crystalline yet bendable functional complex oxide membranes has been a long-standing issue for a myriad of applications, in particular, for flexible electronics. Here, we investigate the viability to prepare magnetic and crystalline CoFe2O4 (CFO) membranes by means of the Sr3Al2O6 (SAO) sacrificial layer approach using chemical deposition techniques. Meticulous chemical and structural study of the SAO surface and SAO/CFO interface properties have allowed us to identify the formation of an amorphous SAO capping layer and carbonates upon air exposure, which dictate the crystalline quality of the subsequent CFO film growth. Vacuum annealing at 800 °C of SAO films promotes the elimination of the surface carbonates and the reconstruction of the SAO surface crystallinity. Ex-situ atomic layer deposition of CFO films at 250 °C on air-exposed SAO offers the opportunity to avoid high-temperature growth while achieving polycrystalline CFO films that can be successfully transferred to a polymer support preserving the magnetic properties under bending. Float on and transfer provides an alternative route to prepare freestanding and wrinkle-free CFO membrane films. The advances and challenges presented in this work are expected to help increase the capabilities to grow different oxide compositions and heterostructures of freestanding films and their range of functional properties.
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Affiliation(s)
- Pol Salles
- ICMAB-CSIC, Campus UAB, Bellaterra, Barcelona 08193, Spain
| | - Roger Guzmán
- School
of Physical Sciences and CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - David Zanders
- Inorganic
Materials Chemistry, Ruhr University Bochum, Universitätsstrasse 150, Bochum 44801, Germany
| | | | - Ignasi Fina
- ICMAB-CSIC, Campus UAB, Bellaterra, Barcelona 08193, Spain
| | | | - Wu Zhou
- School
of Physical Sciences and CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Anjana Devi
- Inorganic
Materials Chemistry, Ruhr University Bochum, Universitätsstrasse 150, Bochum 44801, Germany
| | - Mariona Coll
- ICMAB-CSIC, Campus UAB, Bellaterra, Barcelona 08193, Spain
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Eid A, Rahman MA, Al-Abadleh HA. Mechanistic studies on the conversion of NO gas on urea-iron and copper metal organic frameworks at low temperature conditions: in situ infrared spectroscopy and Monte Carlo investigations. CAN J CHEM 2021. [DOI: 10.1139/cjc-2021-0130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Nitrogen oxide (NOx) emissions from high-temperature combustion processes under fuel-lean conditions continue to be a challenge for the energy industry. Selective catalytic reduction (SCR) is possible using metal oxides and zeolites. There is still a need to identify catalytic materials that are efficient in reducing NOx to environmentally benign nitrogen gas at temperatures lower than 200 °C. Metal-organic frameworks (MOFs) have emerged as a class of highly porous materials with unique physical and chemical properties. This study is motivated by the lack of systematic investigations on SCR using MOFs under industrially relevant conditions. Here, we investigate the extent of NO conversion with two commercially available MOFs, Basolite F300 (Fe-BTC) and HKUST-1 (Cu-BTC), mixed with solid urea as a source for the reductant, ammonia gas. For comparison, experiments were also conducted using cobalt ferrite (CoFe2O4) as a non-porous counterpart to relate its reactivity to those obtained from MOFs. Fourier-transform infrared spectroscopy (FTIR) was utilized to identify the gas and surface species in the temperature range of 115–180 °C. Computational analysis was performed using Monte Carlo simulations to quantify the adsorption energies of different surface species. The results show that the rate of ammonia production from the in situ solid urea decomposition was higher using CoFe2O4 than Fe-BTC and Cu-BTC and that there was very limited conversion of NO on the mixed solid urea-MOF systems due to site blocking. The main conclusions from this study are that MOFs have limited ability to convert NO under low-temperature conditions and that surface regeneration requires additional experimental steps.
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Affiliation(s)
- A.M. Eid
- Department of Chemistry and Biochemistry, Wilfrid Laurier University, Waterloo, ON N2L 3C5, Canada
- Department of Chemistry and Biochemistry, Wilfrid Laurier University, Waterloo, ON N2L 3C5, Canada
| | - Mohammad A. Rahman
- Department of Chemistry and Biochemistry, Wilfrid Laurier University, Waterloo, ON N2L 3C5, Canada
- Department of Chemistry and Biochemistry, Wilfrid Laurier University, Waterloo, ON N2L 3C5, Canada
| | - Hind A. Al-Abadleh
- Department of Chemistry and Biochemistry, Wilfrid Laurier University, Waterloo, ON N2L 3C5, Canada
- Department of Chemistry and Biochemistry, Wilfrid Laurier University, Waterloo, ON N2L 3C5, Canada
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Ma S, Farla R, Bao K, Tayal A, Zhao Y, Tao Q, Yang X, Ma T, Zhu P, Cui T. An electrically conductive and ferromagnetic nano-structure manganese mono-boride with high Vickers hardness. NANOSCALE 2021; 13:18570-18577. [PMID: 34730573 DOI: 10.1039/d1nr03984a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The combination of various desired physical properties greatly extends the applicability of materials. Magnetic materials are generally mechanically soft, yet the combination of high mechanical hardness and ferromagnetic properties is highly sought after. Here, we report the synthesis and characterization of nanocrystalline manganese boride, CrB-type MnB, using the high-pressure and high-temperature method in a large volume press. CrB-type MnB shares the specificity of large numbers of unpaired electrons of manganese ions and strong covalent boron zigzag chains. Thus, manganese mono-boride exhibits "strong" ferromagnetic, magnetocaloric behavior, and possesses high Vickers hardness. We demonstrate that zigzag boron chains in this structure not only play a pivotal role in strengthening mechanical properties but also tuning the exchange correlations between manganese atoms. Nontoxic and Earth-abundant CrB-type MnB is much more incompressible and tougher than traditional ferromagnetic materials. The unique combination of high mechanical hardness, magnetism, and electrical conductivity properties makes it a particularly promising candidate for a wide range of applications.
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Affiliation(s)
- Shuailing Ma
- Synergetic Extreme Condition High-Pressure Science Center, State Key Laboratory of Superhard Materials, college of physics, Jilin University, Changchun 130012, China.
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse, 85, 22607, Hamburg, Germany
| | - Robert Farla
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse, 85, 22607, Hamburg, Germany
| | - Kuo Bao
- Synergetic Extreme Condition High-Pressure Science Center, State Key Laboratory of Superhard Materials, college of physics, Jilin University, Changchun 130012, China.
| | - Akhil Tayal
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse, 85, 22607, Hamburg, Germany
| | - Yongsheng Zhao
- Synergetic Extreme Condition High-Pressure Science Center, State Key Laboratory of Superhard Materials, college of physics, Jilin University, Changchun 130012, China.
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse, 85, 22607, Hamburg, Germany
| | - Qiang Tao
- Synergetic Extreme Condition High-Pressure Science Center, State Key Laboratory of Superhard Materials, college of physics, Jilin University, Changchun 130012, China.
| | - Xigui Yang
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Material Physics, Mistry of Education, School of Physics, Zhengzhou University, Zhengzhou, 450052, China
| | - Teng Ma
- Synergetic Extreme Condition High-Pressure Science Center, State Key Laboratory of Superhard Materials, college of physics, Jilin University, Changchun 130012, China.
| | - Pinwen Zhu
- Synergetic Extreme Condition High-Pressure Science Center, State Key Laboratory of Superhard Materials, college of physics, Jilin University, Changchun 130012, China.
| | - Tian Cui
- Synergetic Extreme Condition High-Pressure Science Center, State Key Laboratory of Superhard Materials, college of physics, Jilin University, Changchun 130012, China.
- Institute of High-Pressure Physics, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China
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7
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Polysaccharides for sustainable energy storage - A review. Carbohydr Polym 2021; 265:118063. [PMID: 33966827 DOI: 10.1016/j.carbpol.2021.118063] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/07/2021] [Accepted: 04/08/2021] [Indexed: 11/22/2022]
Abstract
The increasing amount of electric vehicles on our streets as well as the need to store surplus energy from renewable sources such as wind, solar and tidal parks, has brought small and large scale batteries into the focus of academic and industrial research. While there has been huge progress in performance and cost reduction in the past years, batteries and their components still face several environmental issues including safety, toxicity, recycling and sustainability. In this review, we address these challenges by showcasing the potential of polysaccharide-based compounds and materials used in batteries. This particularly involves their use as electrode binders, separators and gel/solid polymer electrolytes. The review contains a historical section on the different battery technologies, considerations about safety on batteries and requirements of polysaccharide components to be used in different types of battery technologies. The last sections cover opportunities for polysaccharides as well as obstacles that prevent their wider use in battery industry.
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Maity D, Karmakar K, Mandal D, Pal D, Khan GG, Mandal K. Earth abundant transition metal ferrite nanoparticles anchored ZnO nanorods as efficient and stable photoanodes for solar water splitting. NANOTECHNOLOGY 2020; 31:475403. [PMID: 32886646 DOI: 10.1088/1361-6528/abae9a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Poor light absorption, severe surface charge recombination and fast degradation are the key challenges with ZnO nanostructures based electrodes for photoelectrochemical (PEC) water splitting. Here, this study attempts to design an efficient and durable nano-heterojunction photoelectrode by integrating earth abundant chemically stable transition metal spinel ferrites MFe2O4 (M = Co and Ni) nano-particles on ZnO Nanorod arrays. The low band gap magnetic ferrites improve the solar energy harvesting ability of the nano-heterojunction electrodes in ultraviolet-visible light region resulting in a maximum increase of 105% and 190% in photocurrent density and applied bias photon-to-current efficiency, respectively, compared to pristine ZnO nanorods. The favourable type-II band alignment at the ferrites/ZnO nano-heterojunction provides significantly enhanced photo-generated carrier separation and transfer, endowing the excellent solar H2 evolution ability (743 and 891 μmol cm-2 h-1for ZnO/CoFe2O4 and ZnO/NiFe2O4, respectively) of the photoanodes by using sacrificial agent. The hybrid nanostructures deliver long term stability of the electrode against photocorrosion. This work demonstrates an easy but effective strategy to develop low-cost earth abundant ferrites-based heterojunction electrodes, which offers excellent PEC activity and stability.
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Affiliation(s)
- Dipanjan Maity
- Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector-III, Salt Lake, Kolkata 700 106, India
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9
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Hussein MI, Jehangir SS, Rajmohan IJ, Haik Y, Abdulrehman T, Clément Q, Vukadinovic N. Microwave Absorbing properties of metal functionalized-CNT-polymer composite for stealth applications. Sci Rep 2020; 10:16013. [PMID: 32994532 PMCID: PMC7524837 DOI: 10.1038/s41598-020-72928-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 09/04/2020] [Indexed: 11/16/2022] Open
Abstract
In this study, we report on the electrical properties of multi-wall carbon nanotubes (MWCNT) composites functionalized with metal or metal alloy oxides and embedded in a polyurethane matrix to develop a lightweight material for microwave absorption and shielding. The CNT nanoparticles are functionalized with metallic oxides such as Cobalt oxide, Iron oxide, and Cobalt Iron oxide, at three different concentrations. Metallic oxides are used at 5%, 10%, and 20% concentration of the total CNT percentage weight. The resulting functionalized CNT is mixed with polyurethane polymer at 5% wt of the total composite weight. Three sets of cylindrical samples are developed, and each set contains three different metal oxide concentrations. The dielectric properties of the nine developed samples are obtained by measuring their permittivity spectra using an open-ended coaxial probe technique in the spectral range 5-50 GHz. The absorption efficiency of the composites is then obtained by calculating the reflection loss at normal incidence. The results show that the spectral range of absorption can be tuned by changing the CNT concentration, and the material thickness. Functionalized CNT with different alloyed metal oxides enhanced the absorption efficiency of the polyurethane/CNT composites. Such functionalized composites can be used to replace the common heavyweight materials used for microwave applications.
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Affiliation(s)
| | | | - I J Rajmohan
- United Arab Emirates University (UAEU), Al Ain, 15551, UAE
| | - Y Haik
- Texas A & M University-Kingsville, Kingsville, TX, 78363, USA
| | | | - Q Clément
- Dassault Aviation, 92552, Saint-Cloud, France
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Thi Thanh Dang N, Nguyen T, Lizundia E, Quoc Le T, MacLachlan MJ. Biomimetic Mesoporous Cobalt Ferrite/Carbon Nanoflake Helices for Freestanding Lithium‐Ion Battery Anodes. ChemistrySelect 2020. [DOI: 10.1002/slct.202002152] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Nhan Thi Thanh Dang
- Department of Chemistry Hue University of Sciences, Hue University 77 Nguyen Hue Hue 530000 Vietnam
- Department of Chemistry Hue University of Education, Hue University 34 Le Loi Hue 530000 Vietnam
| | - Thanh‐Dinh Nguyen
- Department of Chemistry University of British Columbia 2036 Main Mall Vancouver, British Columbia V6T 1Z1 Canada
| | - Erlantz Lizundia
- Department of Graphic Design and Engineering Projects, Faculty of Engineering in Bilbao University of the Basque Country (UPV/EHU) Bilbao 48013 Spain
- BCMaterials, Basque Center for Materials Applications and Nanostructures UPV/EHU Science Park 48940 Leioa Spain
- Laboratory for Multifunctional Materials, Department of Materials ETH Zürich Vladimir-Prelog-Weg 5 8093 Zürich Switzerlandn
| | - Thang Quoc Le
- Department of Chemistry Hue University of Education, Hue University 34 Le Loi Hue 530000 Vietnam
| | - Mark J. MacLachlan
- Department of Chemistry University of British Columbia 2036 Main Mall Vancouver, British Columbia V6T 1Z1 Canada
- Stewart Blusson Quantum Matter Institute University of British Columbia 2355 East Mall Vancouver, British Columbia V6T 1Z4 Canada
- WPI Nano Life Science Institute Kanazawa University Kanazawa 920-1192 Japan
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11
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Zhao X, Li L, Bao K, Zhu P, Tao Q, Ma S, Liu B, Ge Y, Li D, Cui T. Synthesis and characterization of a strong ferromagnetic and high hardness intermetallic compound Fe 2B. Phys Chem Chem Phys 2020; 22:27425-27432. [PMID: 33232409 DOI: 10.1039/d0cp03380d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Magnetic materials attract great attention due to their fundamental importance and practical application. However, the relatively inferior mechanical properties of traditional magnetic materials limit their application in a harsh environment. In this work, we report an outstanding magnetic material that exhibits both fantastic mechanical and excellent magnetic properties, CuAl2-type Fe2B, synthesized by the high pressure and high temperature method. The magnetic saturation of Fe2B is 156.9 emu g-1 at room temperature and its Vickers hardness is 12.4 GPa which outclasses those of traditional magnetic materials. It exhibits good conductivity with a resistivity of 5.6 × 10-7 Ω m. Fe2B is a promising strong ferromagnetic material with high hardness, which makes it a good candidate for multifunction applications in a harsh environment. The high hardness of Fe2B originates from the Fe-B bond framework, and the strong ferromagnetism is mainly attributed to the large number of unpaired Fe 3d electrons. The competition of Fe 3d electrons to fall into Fe-B bonds or Fe-Fe bonds is the main factor for its magnetism and hardness. This work bridges the chasm between strong ferromagnetism and high hardness communities.
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Affiliation(s)
- Xingbin Zhao
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, People's Republic of China.
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12
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Wu ZY, Deng L, Li JT, Huang QS, Lu YQ, Liu J, Zhang T, Huang L, Sun SG. Multiple hydrogel alginate binders for Si anodes of lithium-ion battery. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.05.094] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Valvo M, Liivat A, Eriksson H, Tai C, Edström K. Iron-Based Electrodes Meet Water-Based Preparation, Fluorine-Free Electrolyte and Binder: A Chance for More Sustainable Lithium-Ion Batteries? CHEMSUSCHEM 2017; 10:2431-2448. [PMID: 28296133 PMCID: PMC5488250 DOI: 10.1002/cssc.201700070] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 02/23/2017] [Indexed: 05/18/2023]
Abstract
Environmentally friendly and cost-effective Li-ion cells are fabricated with abundant, non-toxic LiFePO4 cathodes and iron oxide anodes. A water-soluble alginate binder is used to coat both electrodes to reduce the environmental footprint. The critical reactivity of LiPF6 -based electrolytes toward possible traces of H2 O in water-processed electrodes is overcome by using a lithium bis(oxalato)borate (LiBOB) salt. The absence of fluorine in the electrolyte and binder is a cornerstone for improved cell chemistry and results in stable battery operation. A dedicated approach to exploit conversion-type anodes more effectively is also disclosed. The issue of large voltage hysteresis upon conversion/de-conversion is circumvented by operating iron oxide in a deeply lithiated Fe/Li2 O form. Li-ion cells with energy efficiencies of up to 92 % are demonstrated if LiFePO4 is cycled versus such anodes prepared through a pre-lithiation procedure. These cells show an average energy efficiency of approximately 90.66 % and a mean Coulombic efficiency of approximately 99.65 % over 320 cycles at current densities of 0.1, 0.2 and 0.3 mA cm-2 . They retain nearly 100 % of their initial discharge capacity and provide an unmatched operation potential of approximately 2.85 V for this combination of active materials. No occurrence of Li plating was detected in three-electrode cells at charging rates of approximately 5C. Excellent rate capabilities of up to approximately 30C are achieved thanks to the exploitation of size effects from the small Fe nanoparticles and their reactive boundaries.
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Affiliation(s)
- Mario Valvo
- Department of Chemistry—Ångström LaboratoryUppsala UniversityBox 53875121UppsalaSweden), Fax: (+46) 018–513–548
| | - Anti Liivat
- Department of Chemistry—Ångström LaboratoryUppsala UniversityBox 53875121UppsalaSweden), Fax: (+46) 018–513–548
| | - Henrik Eriksson
- Department of Chemistry—Ångström LaboratoryUppsala UniversityBox 53875121UppsalaSweden), Fax: (+46) 018–513–548
| | - Cheuk‐Wai Tai
- Department of Materials and Environmental Chemistry—Arrhenius LaboratoryStockholm University10691StockholmSweden
| | - Kristina Edström
- Department of Chemistry—Ångström LaboratoryUppsala UniversityBox 53875121UppsalaSweden), Fax: (+46) 018–513–548
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Manganese mono-boride, an inexpensive room temperature ferromagnetic hard material. Sci Rep 2017; 7:43759. [PMID: 28262805 PMCID: PMC5338324 DOI: 10.1038/srep43759] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 01/26/2017] [Indexed: 11/30/2022] Open
Abstract
We synthesized orthorhombic FeB-type MnB (space group: Pnma) with high pressure and high temperature method. MnB is a promising soft magnetic material, which is ferromagnetic with Curie temperature as high as 546.3 K, and high magnetization value up to 155.5 emu/g, and comparatively low coercive field. The strong room temperature ferromagnetic properties stem from the positive exchange-correlation between manganese atoms and the large number of unpaired Mn 3d electrons. The asymptotic Vickers hardness (AVH) is 15.7 GPa which is far higher than that of traditional ferromagnetic materials. The high hardness is ascribed to the zigzag boron chains running through manganese lattice, as unraveled by X-ray photoelectron spectroscopy result and first principle calculations. This exploration opens a new class of materials with the integration of superior mechanical properties, lower cost, electrical conductivity, and fantastic soft magnetic properties which will be significant for scientific research and industrial application as advanced structural and functional materials.
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Yuvaraj S, Selvan RK, Lee YS. An overview of AB2O4- and A2BO4-structured negative electrodes for advanced Li-ion batteries. RSC Adv 2016. [DOI: 10.1039/c5ra23503k] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Energy-storage devices are state-of-the-art devices with many potential technical and domestic applications.
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Affiliation(s)
- Subramanian Yuvaraj
- Solid State Ionics and Energy Devices Laboratory
- Department of Physics
- Bharathiar University
- Coimbatore 641 046
- India
| | - Ramakrishnan Kalai Selvan
- Solid State Ionics and Energy Devices Laboratory
- Department of Physics
- Bharathiar University
- Coimbatore 641 046
- India
| | - Yun Sung Lee
- Faculty of Applied Chemical Engineering
- Chonnam National University
- Gwangju 500-757
- Korea
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17
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Kollu P, Kumar PR, Santosh C, Kim DK, Grace AN. A high capacity MnFe2O4/rGO nanocomposite for Li and Na-ion battery applications. RSC Adv 2015. [DOI: 10.1039/c5ra11439j] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hydrothermally synthesized MnFe2O4/rGO composite with sodium alginate binder shows a highly stable capacity of 258 mA h g−1versusNa/Na+at 0.1C rate.
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Affiliation(s)
- Pratap Kollu
- Thin Film Magnetism Group
- Cavendish Laboratory
- Department of Physics
- University of Cambridge
- Cambridge CB3 0HE
| | - P. Ramesh Kumar
- Department of Materials Science and Engineering
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 305-701
- Republic of Korea
| | - Chella Santosh
- Centre for Nanotechnology Research
- VIT University
- Vellore-632014
- India
| | - Do Kyung Kim
- Department of Materials Science and Engineering
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 305-701
- Republic of Korea
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