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Mushtaq MW, Shahbaz M, Naeem R, Bashir S, Sharif S, Ali K, Dogar NA. Synthesis of surfactant-assisted nickel ferrite nanoparticles (NFNPs@surfactant) to amplify their application as an advanced electrode material for high-performance supercapacitors. RSC Adv 2024; 14:20230-20239. [PMID: 38919283 PMCID: PMC11197016 DOI: 10.1039/d4ra02135e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 05/31/2024] [Indexed: 06/27/2024] Open
Abstract
Nickel ferrite nanoparticles (NFNPs) were synthesized in an alkaline medium (pH ∼ 11) using a wet chemical co-precipitation technique. To probe the effect of surfactants on the surface morphology, particle size and size distribution of nanoparticles; two surfactants, namely, cetyl trimethyl ammonium bromide (CTAB) and sodium dodecyl sulphate (SDS), were applied. The native and surfactant-assisted nickel ferrite NPs were characterized using Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), dynamic light scattering (DLS) and transmission electron microscopy (TEM). The addition of surfactants (CTAB/SDS) effectively controlled the secondary growth of nickel ferrite particles and reduced their size, as examined by XRD, AFM, DLS, SEM and TEM. Characterization technique results affirmed that CTAB is a more optimistic surfactant to control the clustering, dispersion and particle size (∼22 nm) of NFNPs. To identify the impact of ferrite particle size on charge storage devices, their electrochemical properties were studied by using cyclic voltammetry (CV), galvanic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS) in 1 M KOH electrolyte through three-electrode assembly. NiFe2O4@CTAB showed a specific capacity of 267.1 C g-1, specific capacitance of 593.6 F g-1 and energy density of 16.69 W h kg-1, which was far better than the performances of other synthesized native NFNPs and NiFe2O4@SDS having larger surface areas.
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Affiliation(s)
| | - Muhammad Shahbaz
- Materials Chemistry Laboratory, Department of Chemistry, GC University Lahore Pakistan
| | - Rabia Naeem
- Materials Chemistry Laboratory, Department of Chemistry, GC University Lahore Pakistan
| | - Shahid Bashir
- Department of Chemistry, University of Malaya Kuala Lumpur Malaysia
| | - Shahzad Sharif
- Materials Chemistry Laboratory, Department of Chemistry, GC University Lahore Pakistan
| | - Kainat Ali
- Department of Chemistry, Govt. Graduate College of Science Wahdat Road Lahore Pakistan
| | - Naveed Aslam Dogar
- Department of Chemistry, Govt. Graduate College of Science Wahdat Road Lahore Pakistan
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Bhat AH, Chopan NA, Chisti HTN. Enhanced photocatalytic degradation of crystal violet dye and high-performance electrochemical supercapacitor applications of hydrothermally synthesised magnetic bifunctional nanocomposite (Fe 3O 4/ZnO). NANOTECHNOLOGY 2023; 34:495604. [PMID: 37669630 DOI: 10.1088/1361-6528/acf6c4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 09/05/2023] [Indexed: 09/07/2023]
Abstract
The present investigation employed a facile hydrothermal approach for the fabrication of Fe3O4/ZnO dual-functional magnetic nanocomposite. Supercapacitor and visible-light-driven photocatalytic applications of the material were explored. X-ray diffraction, Fourier transform infrared spectra, ultraviolet-visible diffuse reflectance spectra (UV-vis/DRS), field emission scanning electron microscopy (FE-SEM), energy dispersive x-ray spectroscopy, and vibrating sample magnetometer were used to analyse the nanocomposite's structural, morphological, optical, and magnetic properties. The FE-SEM analysis demonstrated that the surface morphology of Fe3O4, ZnO, and the Fe3O4/ZnO nanocomposite consisted of nanoparticles, nanoflakes, and nanoparticles adhered to the nanoflakes, respectively. The maximum specific capacitance of the electrode based on the Fe3O4/ZnO nanocomposite was measured to be 736.36 Fg-1at a scan rate of 5 mVs-1. The electrode also demonstrated remarkable cycling stability, retaining 86.5% of its capacitance even after 3000 cycles. The Fe3O4/ZnO nanocomposite was found to have an optical bandgap of 2.7 eV, an average particle size of 22.5 nm, and a saturation magnetization of 68.7 emu g-1. The photocatalysis experiment was conducted using the optimised settings, which included a pH of 7.0, a dye concentration of 30 mg l-1, a catalyst dose of 1 g l-1, and a contact time of 120 min. The Fe3O4/ZnO nanocomposite exhibited a notable degradation efficiency towards crystal violet dye upon exposure to visible light, achieving a degradation efficiency of 96.9%. This performance surpassed that of pure ZnO, which attained a degradation efficiency of 70.2%. The nanocomposite exhibited a rate constant of 2.80 × 10-2min-1, which was found to be notably higher than that of pure ZnO (0.8 × 10-2min-1), as determined through modelling (pseudo-first order linear fit). The radical scavenger experiments indicated that the superoxide radicals and hydroxyl radicals are the primary reactive species. The Fe3O4/ZnO photocatalyst can be effectively isolated using a bar magnet. Remarkably, the photocatalytic efficiency of the material remained almost entirely intact even after undergoing four cycles of recycling. In addition, this research opens up exciting new possibilities for use in fields like energy storage and pollution control.
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Affiliation(s)
- Aabid Hussain Bhat
- Department of Chemistry, National Institute of Technology Srinagar, J&K, (190006), India
| | - Nisar Ahmad Chopan
- Department of Chemistry, National Institute of Technology Srinagar, J&K, (190006), India
| | - Hamida-Tun-Nisa Chisti
- Department of Chemistry, National Institute of Technology Srinagar, J&K, (190006), India
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Kumar S, Ahmed F, Shaalan NM, Arshi N, Dalela S, Chae KH. Investigations of Structural, Magnetic, and Electrochemical Properties of NiFe 2O 4 Nanoparticles as Electrode Materials for Supercapacitor Applications. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4328. [PMID: 37374513 DOI: 10.3390/ma16124328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/29/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023]
Abstract
Magnetic nanoparticles of NiFe2O4 were successfully prepared by utilizing the sol-gel techniques. The prepared samples were investigated through various techniques such as X-ray diffraction (XRD), transmission electron microscopy (TEM), dielectric spectroscopy, DC magnetization and electrochemical measurements. XRD data analysed using Rietveld refinement procedure inferred that NiFe2O4 nanoparticles displayed a single-phase nature with face-centred cubic crystallinity with space group Fd-3m. Average crystallite size estimated using the XRD patterns was observed to be ~10 nm. The ring pattern observed in the selected area electron diffraction pattern (SAED) also confirmed the single-phase formation in NiFe2O4 nanoparticles. TEM micrographs confirmed the uniformly distributed nanoparticles with spherical shape and an average particle size of 9.7 nm. Raman spectroscopy showed characteristic bands corresponding to NiFe2O4 with a shift of the A1g mode, which may be due to possible development of oxygen vacancies. Dielectric constant, measured at different temperatures, increased with temperature and decreased with increase in frequency at all temperatures. The Havrilliak-Negami model used to study the dielectric spectroscopy indicated that a NiFe2O4 nanoparticles display non-Debye type relaxation. Jonscher's power law was utilized for the calculation of the exponent and DC conductivity. The exponent values clearly demonstrated the non-ohmic behaviour of NiFe2O4 nanoparticles. The dielectric constant of the nanoparticles was found to be >300, showing a normal dispersive behaviour. AC conductivity showed an increase with the rise in temperature with the highest value of 3.4 × 10-9 S/cm at 323 K. The M-H curves revealed the ferromagnetic behaviour of a NiFe2O4 nanoparticle. The ZFC and FC studies suggested a blocking temperature of ~64 K. The saturation of magnetization determined using the law of approach to saturation was ~61.4 emu/g at 10 K, corresponding to the magnetic anisotropy ~2.9 × 104 erg/cm3. Electrochemical studies showed that a specific capacitance of ~600 F g-1 was observed from the cyclic voltammetry and galvanostatic charge-discharge, which suggested its utilization as a potential electrode for supercapacitor applications.
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Affiliation(s)
- Shalendra Kumar
- Department of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
- Department of Physics, University of Petroleum & Energy Studies, Dehradun 248007, India
| | - Faheem Ahmed
- Department of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
| | - Nagih M Shaalan
- Department of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
- Physics Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Nishat Arshi
- Department of Basic Sciences, Preparatory Year Deanship, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
| | - Saurabh Dalela
- Department of Pure & Applied Physics, University of Kota, Kota, Rajasthan 324005, India
| | - Keun Hwa Chae
- Advanced Analysis & Data Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
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Abdullah M, Alharbi FF, Khosa RY, Alburaih HA, Manzoor S, Abid AG, Ali HE, Waheed MS, Ansari MN, Farid HMT. Partial sulfur doping induced variation in morphology of MnFe2O4 with enhanced electrochemical performance for energy storage devices. KOREAN J CHEM ENG 2023. [DOI: 10.1007/s11814-023-1423-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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Dealloyed Porous NiFe 2O 4/NiO with Dual-Network Structure as High-Performance Anodes for Lithium-Ion Batteries. Int J Mol Sci 2023; 24:ijms24044152. [PMID: 36835563 PMCID: PMC9960563 DOI: 10.3390/ijms24044152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 02/09/2023] [Accepted: 02/17/2023] [Indexed: 02/22/2023] Open
Abstract
As high-capacity anode materials, spinel NiFe2O4 aroused extensive attention due to its natural abundance and safe working voltage. For widespread commercialization, some drawbacks, such as rapid capacity fading and poor reversibility due to large volume variation and inferior conductivity, urgently require amelioration. In this work, NiFe2O4/NiO composites with a dual-network structure were fabricated by a simple dealloying method. Benefiting from the dual-network structure and composed of nanosheet networks and ligament-pore networks, this material provides sufficient space for volume expansion and is able to boost the rapid transfer of electrons and Li ions. As a result, the material exhibits excellent electrochemical performance, retaining 756.9 mAh g-1 at 200 mA g-1 after cycling for 100 cycles and retaining 641.1 mAh g-1 after 1000 cycles at 500 mA g-1. This work provides a facile way to prepare a novel dual-network structured spinel oxide material, which can promote the development of oxide anodes and also dealloying techniques in broad fields.
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Mohamed Racik K, Anand S, Muniyappan S, Nandhini S, Rameshkumar S, Mani D, Karuppasamy P, Pandian MS, Ramasamy P. Preparation of CoFe2O4/SiO2 nanocomposite as potential electrode materials for supercapacitors. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Munir MA, Naz MY, Shukrullah S, Ansar MT, Farooq MU, Irfan M, Mursal SNF, Legutko S, Petrů J, Pagáč M. Enhancement of Magnetic and Dielectric Properties of Ni 0.25Cu 0.25Zn 0.50Fe 2O 4 Magnetic Nanoparticles through Non-Thermal Microwave Plasma Treatment for High-Frequency and Energy Storage Applications. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6890. [PMID: 36234231 PMCID: PMC9572348 DOI: 10.3390/ma15196890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/29/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Spinel ferrites are widely investigated for their widespread applications in high-frequency and energy storage devices. This work focuses on enhancing the magnetic and dielectric properties of Ni0.25Cu0.25Zn0.50 ferrite series through non-thermal microwave plasma exposure under low-pressure conditions. A series of Ni0.25Cu0.25Zn0.50 ferrites was produced using a facile sol-gel auto-ignition approach. The post-synthesis plasma treatment was given in a low-pressure chamber by sustaining oxygen plasma with a microwave source. The structural formation of control and plasma-modified ferrites was investigated through X-ray diffraction analysis, which confirmed the formation of the fcc cubical structure of all samples. The plasma treatment did not affect crystallize size but significantly altered the surface porosity. The surface porosity increased after plasma treatment and average crystallite size was measured as about ~49.13 nm. Morphological studies confirmed changes in surface morphology and reduction in particle size on plasma exposure. The saturation magnetization of plasma-exposed ferrites was roughly 65% higher than the control. The saturation magnetization, remnant magnetization, and coercivity of plasma-exposed ferrites were calculated as 74.46 emu/g, 26.35 emu/g, and 1040 Oe, respectively. Dielectric characteristics revealed a better response of plasma-exposed ferrites to electromagnetic waves than control. These findings suggest that the plasma-exposed ferrites are good candidates for constructing high-frequency devices.
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Affiliation(s)
- Muhammad Adnan Munir
- Department of Physics, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Muhammad Yasin Naz
- Department of Physics, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Shazia Shukrullah
- Department of Physics, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Muhammad Tamoor Ansar
- Centre of Excellence in Solid State Physics, University of the Punjab, Lahore 54590, Pakistan
| | - Muhammad Umar Farooq
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Muhammad Irfan
- Electrical Engineering Department, College of Engineering, Najran University, Najran 61441, Saudi Arabia
| | - Salim Nasar Faraj Mursal
- Electrical Engineering Department, College of Engineering, Najran University, Najran 61441, Saudi Arabia
| | - Stanislaw Legutko
- Faculty of Mechanical Engineering, Poznan University of Technology, 60-965 Poznan, Poland
| | - Jana Petrů
- Department of Machining, Assembly and Engineering Metrology, Mechanical Engineering Faculty, VŠB-Technical University of Ostrava, 17, Listopadu 2172/15, 70800 Ostrava, Czech Republic
| | - Marek Pagáč
- FME, Department of Machining, Assembly and Engineering Metrology, VSB Technical University of Ostrava, 17. listopadu 2172/15, 70800 Ostrava, Czech Republic
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Zhao Q, Liu X, Veldhuis S, Zhitomirsky I. Colloidal processing of ferroelectric poly(vinylidene fluoride-co-hexafluoropropylene)—ferrimagnetic pseudocapacitive CuFe2O4 composite films. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-022-05022-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Sivakumar M, Muthukutty B, Panomsuwan G, Veeramani V, Jiang Z, Maiyalagan T. Facile synthesis of NiFe2O4 nanoparticle with carbon nanotube composite electrodes for high-performance asymmetric supercapacitor. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129188] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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10
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Xu L, Wang Z, Shu K, Wu H, Hu Y. Surface chemistry considerations of gangue dissolved species in the bastnaesite flotation system. FUNDAMENTAL RESEARCH 2022; 2:748-756. [PMID: 38933123 PMCID: PMC11197533 DOI: 10.1016/j.fmre.2021.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 08/27/2021] [Accepted: 09/13/2021] [Indexed: 10/20/2022] Open
Abstract
Inefficient flotation of bastnaesite remains a challenge in the production of rare earth elements. This study aimed to investigate the dissolution and adsorption behaviour of species that are commonly released into bastnaesite flotation pulp from Ca/Ba-bearing gangue minerals. The influence and corresponding mechanisms on the bastnaesite mineral surface and collectors, namely sodium oleate (NaOL), were evaluated experimentally based on micro-flotation, zeta potentials, in situ attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), and X-Ray photoelectron spectroscopy (XPS) analyses. The flotation recovery of bastnaesite significantly decreased from ∼95% to ∼25%, ∼15%, ∼80%, ∼25% when exposed to calcite, fluorite, barite, and mixed dissolved species, respectively. The zeta potential of bastnaesite was pH sensitive, indicating that H+ and OH- determine the surface potential of bastnaesite. Solution chemistry analyses revealed that the presence of the dissolved species differed at various pH values. In situ ATR-FTIR demonstrated the different effects of the dissolved species from calcite, fluorite, and barite on collector adsorption. The former two dissolved species mainly depressed the chemisorption of the NaOL monomers (RCOO‒), whereas calcite also affected the physical adsorption of the oleic acid molecular dimer (RCOOH·RCOO‒). Moreover, the barite dissolved species only affected the physical adsorption of the NaOL species. The results of XPS analysis revealed that dissolved species from these three gangues could pre-adsorbed onto bastnaesite and affected the interaction with the collector. Density functional theory calculations were employed to provide further theoretical insights into the interactions between the dissolved species from calcite, fluorite, and barite and NaOL.
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Affiliation(s)
- Longhua Xu
- Key Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
- State Key Laboratory for Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
| | - Zhoujie Wang
- Key Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
| | - Kaiqian Shu
- Key Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
| | - Houqin Wu
- Key Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
| | - Yuehua Hu
- School of Resources Processing and Bioengineering, Central South University, Changsha 410012, Hunan, China
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Gao X, Bi J, Gao J, Meng L, Xie L, Liu C. Partial sulfur doping induced lattice expansion of NiFe2O4 with enhanced electrochemical capacity for supercapacitor application. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Lv H, Xiao Z, Zhai S, Hao J, Tong Y, Wang G, An Q. Construction of nickel ferrite nanoparticle-loaded on carboxymethyl cellulose-derived porous carbon for efficient pseudocapacitive energy storage. J Colloid Interface Sci 2022; 622:327-335. [PMID: 35525136 DOI: 10.1016/j.jcis.2022.04.133] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 04/22/2022] [Accepted: 04/23/2022] [Indexed: 12/14/2022]
Abstract
The preparation of biomass-derived carbon electrode materials with abundant active sites is suitable for development of energy-storage systems with high energy and power densities. Herein, a hybrid material consisting of highly-dispersed nickel ferrite nanoparticle on 3D hierarchical carboxymethyl cellulose-derived porous carbon (NiFe2O4/CPC) was prepared by simple annealing treatment. The synergistic effects of NiFe2O4 species with multiple oxidation states and 3D porous carbon with a large specific surface area offered abundant active centers, fast electron/ion transport, and robust structural stability, thereby showing the excellent performance of the electrochemical capacitor. The best performing sample (NiFe2O4/CPC-800) exhibited a superior capacitance of 2894F g-1 at a current density of 0.5 A g-1. Encouragingly, an asymmetric supercapacitor with NiFe2O4/CPC-800 as a positive electrode and activated carbon as a negative electrode delivered a high energy density of 135.2 W h kg-1 along with an improved power density of 10.04 kW kg-1. Meanwhile, the superior cycling stability of 90.2% over 10,000 cycles at 5 A g-1 was achieved. Overall, the presented work offers a guideline for the design and preparation of advanced electrode materials for energy-storage systems.
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Affiliation(s)
- Hui Lv
- Liaoning Key Lab of Lignocellulose Chemistry and Biomaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Zuoyi Xiao
- Liaoning Key Lab of Lignocellulose Chemistry and Biomaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Shangru Zhai
- Liaoning Key Lab of Lignocellulose Chemistry and Biomaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Jingai Hao
- Liaoning Key Lab of Lignocellulose Chemistry and Biomaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Yao Tong
- Liaoning Key Lab of Lignocellulose Chemistry and Biomaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Guoxiang Wang
- Liaoning Key Lab of Lignocellulose Chemistry and Biomaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Qingda An
- Liaoning Key Lab of Lignocellulose Chemistry and Biomaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
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Dai S, Tang X, Li X, Zhang J, Shao Z. Synthesis of NiFe2O4 with different precipitation agents for Li-ion battery anode material by co-precipitation. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-022-05158-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Facile Route for Fabrication of Ferrimagnetic Mn3O4 Spinel Material for Supercapacitors with Enhanced Capacitance. ENERGIES 2022. [DOI: 10.3390/en15051812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The purpose of this investigation was the development of a new colloidal route for the fabrication of Mn3O4 electrodes for supercapacitors with enhanced charge storage performance. Mn3O4-carbon nanotube electrodes were fabricated with record-high capacitances of 6.67 F cm−2 obtained from cyclic voltammetry tests at a scan rate of 2 mV s−1 and 7.55 F cm−2 obtained from the galvanostatic charge–discharge tests at a current density of 3 mA cm−2 in 0.5 M Na2SO4 electrolyte in a potential window of 0.9 V. The approach involves the use of murexide as a capping agent for the synthesis of Mn3O4 and a co-dispersant for Mn3O4 and carbon nanotubes. Good electrochemical performance of the electrode material was achieved at a high active mass loading of 40 mg cm−2 and was linked to a reduced agglomeration of Mn3O4 nanoparticles and efficient co-dispersion of Mn3O4 with carbon nanotubes. The mechanisms of murexide adsorption on Mn3O4 and carbon nanotube are discussed. With the proposed method, the time-consuming electrode activation procedure for Mn3O4 electrodes can be avoided. The approach developed in this investigation paves the way for the fabrication of advanced cathodes for asymmetric supercapacitors and multifunctional devices, combining capacitive, magnetic, and other functional properties.
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Grabsi I, Bouaïcha F, Ziouche A, Bouaziz N, Zaabat M, Yildiz F. Effect of Cobalt and Nickel Doping on Structural and Magnetic Properties of Iron Oxide Nanoparticles. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-021-02185-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Guo Y, Chen Y, Hu X, Yao Y, Li Z. Tween modified CuFe2O4 nanoparticles with enhanced supercapacitor performance. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127676] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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Ren L, Zheng R, Zhou B, Xu H, Li R, Zhao C, Wen X, Zeng T, Shu C. Rationalizing Surface Electronic Configuration of Ni-Fe LDO by Introducing Cationic Nickel Vacancies as Highly Efficient Electrocatalysts for Lithium-Oxygen Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2104349. [PMID: 34713590 DOI: 10.1002/smll.202104349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/31/2021] [Indexed: 06/13/2023]
Abstract
Cationic defect engineering is an effective strategy to optimize the electronic structure of active sites and boost the oxygen electrode reactions in lithium-oxygen batteries (LOBs). Herein, Ni-Fe layered double oxides enriched with cationic nickel vacancies (Ni-Fe LDO-VNi ) are first designed and studied as the electrocatalysts for LOBs. Based on the density functional theory calculation, the existence of nickel vacancy in Ni-Fe LDO-VNi significantly improves its intrinsic affinity toward intermediates, thereby fundamentally optimizing the formation and decomposition pathway of Li2 O2 . In addition, the number of eg electrons on each nickel site is 1.19 for Ni-Fe LDO-VNi , which is much closer to 1 than 1.49 for Ni-Fe LDO. The near-unity occupation of eg orbital enhances the covalency of transition metal-oxygen bonds and thus improves the electrocatalytic activity of Ni-Fe LDO-VNi toward oxygen electrode reactions. The experimental results show that the LOBs with Ni-Fe LDO-VNi electrode deliver low overpotentials of 0.11/0.29 V during the oxygen reduction reaction/oxygen evolution reaction, respectively, large specific capacities of 13 933 mA h g-1 and superior cycling stability of over 826 h. This study provides a novel approach to optimize the electrocatalytic activity of LDO through reasonable defect engineering.
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Affiliation(s)
- Longfei Ren
- College of Materials and Chemistry and Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan, 610059, P. R. China
| | - Ruixin Zheng
- College of Materials and Chemistry and Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan, 610059, P. R. China
| | - Bo Zhou
- College of Materials and Chemistry and Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan, 610059, P. R. China
| | - Haoyang Xu
- College of Materials and Chemistry and Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan, 610059, P. R. China
| | - Runjing Li
- College of Materials and Chemistry and Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan, 610059, P. R. China
| | - Chuan Zhao
- College of Materials and Chemistry and Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan, 610059, P. R. China
| | - Xiaojuan Wen
- College of Materials and Chemistry and Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan, 610059, P. R. China
| | - Ting Zeng
- College of Materials and Chemistry and Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan, 610059, P. R. China
| | - Chaozhu Shu
- College of Materials and Chemistry and Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu, Sichuan, 610059, P. R. China
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18
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NiFe2O4 nanospheres with size-tunable magnetic and electrochemical properties for superior supercapacitor electrode performance. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139346] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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19
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Liu Q, Wang Z, Liu J, Lu Z, Xuan D, Luo F, Li S, Ye Y, Wang D, Wang D, Zheng Z. One‐Dimensional Spinel Transition Bimetallic Oxide Composite Carbon Nanofibers (CoFe
2
O
4
@CNFs) for Asymmetric Supercapacitors. ChemElectroChem 2021. [DOI: 10.1002/celc.202100998] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Qian Liu
- Fujian Provincial Industry Technologies Development Base for New Energy Fujian Provincial Engineering and Research Center of Clean and High-Valued Technologies for Biomass Xiamen Key Laboratory for High-Valued Conversion Technology of Agricultural Biomass College of Energy Xiamen University Xiamen 361102 P.R. China
| | - Zhuang Wang
- Fujian Provincial Industry Technologies Development Base for New Energy Fujian Provincial Engineering and Research Center of Clean and High-Valued Technologies for Biomass Xiamen Key Laboratory for High-Valued Conversion Technology of Agricultural Biomass College of Energy Xiamen University Xiamen 361102 P.R. China
| | - Jie Liu
- Fujian Provincial Industry Technologies Development Base for New Energy Fujian Provincial Engineering and Research Center of Clean and High-Valued Technologies for Biomass Xiamen Key Laboratory for High-Valued Conversion Technology of Agricultural Biomass College of Energy Xiamen University Xiamen 361102 P.R. China
| | - Zhe Lu
- Fujian Provincial Industry Technologies Development Base for New Energy Fujian Provincial Engineering and Research Center of Clean and High-Valued Technologies for Biomass Xiamen Key Laboratory for High-Valued Conversion Technology of Agricultural Biomass College of Energy Xiamen University Xiamen 361102 P.R. China
| | - Dipan Xuan
- Fujian Provincial Industry Technologies Development Base for New Energy Fujian Provincial Engineering and Research Center of Clean and High-Valued Technologies for Biomass Xiamen Key Laboratory for High-Valued Conversion Technology of Agricultural Biomass College of Energy Xiamen University Xiamen 361102 P.R. China
| | - Fenqiang Luo
- Fujian Provincial Industry Technologies Development Base for New Energy Fujian Provincial Engineering and Research Center of Clean and High-Valued Technologies for Biomass Xiamen Key Laboratory for High-Valued Conversion Technology of Agricultural Biomass College of Energy Xiamen University Xiamen 361102 P.R. China
| | - Shuirong Li
- Fujian Provincial Industry Technologies Development Base for New Energy Fujian Provincial Engineering and Research Center of Clean and High-Valued Technologies for Biomass Xiamen Key Laboratory for High-Valued Conversion Technology of Agricultural Biomass College of Energy Xiamen University Xiamen 361102 P.R. China
| | - Yueyuan Ye
- Fujian Provincial Industry Technologies Development Base for New Energy Fujian Provincial Engineering and Research Center of Clean and High-Valued Technologies for Biomass Xiamen Key Laboratory for High-Valued Conversion Technology of Agricultural Biomass College of Energy Xiamen University Xiamen 361102 P.R. China
| | - Duo Wang
- Fujian Provincial Industry Technologies Development Base for New Energy Fujian Provincial Engineering and Research Center of Clean and High-Valued Technologies for Biomass Xiamen Key Laboratory for High-Valued Conversion Technology of Agricultural Biomass College of Energy Xiamen University Xiamen 361102 P.R. China
| | - Dechao Wang
- Fujian Provincial Industry Technologies Development Base for New Energy Fujian Provincial Engineering and Research Center of Clean and High-Valued Technologies for Biomass Xiamen Key Laboratory for High-Valued Conversion Technology of Agricultural Biomass College of Energy Xiamen University Xiamen 361102 P.R. China
| | - Zhifeng Zheng
- Fujian Provincial Industry Technologies Development Base for New Energy Fujian Provincial Engineering and Research Center of Clean and High-Valued Technologies for Biomass Xiamen Key Laboratory for High-Valued Conversion Technology of Agricultural Biomass College of Energy Xiamen University Xiamen 361102 P.R. China
- China Fujian Innovation Laboratory of Energy Materials Science and Technology Tan Kah Kee Innovation Laboratory Xiamen University Xiamen 361102 China
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20
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Jiang X, Chen T, Liu B, Sun R, Fu J, Jiang X, Cui P, Liu Z, Han W. Enhancing energy storage capacity of iron oxide-based anodes by adjusting Fe (II/III) ratio in spinel crystalline. NANOTECHNOLOGY 2021; 32:395705. [PMID: 34171854 DOI: 10.1088/1361-6528/ac0eab] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 06/24/2021] [Indexed: 06/13/2023]
Abstract
Supercapacitors, as promising energy storage candidates, are limited by their unsatisfactory anodes. Herein, we proposed a strategy to improve the electrochemical performance of iron oxide anodes by spinel-framework constraining. We have optimized the anode performance by adjusting the doping ratio of Fe (II/III) self-redox pairs. Structure and electronic state characterizations reveal that the NixFe3-xO4was composed of Fe (II/III) and Ni (II/III) pairs in lattice, ensuring a flexible framework for the reversible reaction of Fe (II/III). Typically, when the ratio of Fe (II/III) is 0.91:1 (Fe (II/III)-0.91/1), the NixFe3-xO4anode shows a remarkable electrochemical performance with a high specific capacitance of 1694 F g-1at the current density of 2 A g-1and capacitance retention of 81.58%, even at a large current density of 50 A g-1. In addition, the obtained material presents an ultra-stable electrochemical performance, and there is no observable degradation after 5000 cycles. Moreover, an assembled asymmetric supercapacitor of Ni-Co-S@CC//NixFe3-xO4@CC presents a maximum energy density of 136.82 Wh kg-1at the power density of 850.02 W kg-1. When the power density was close to 42 500 W kg-1, the energy density was still maintained 63.75 Wh kg-1. The study indicates that inherent performance of anode material can be improved by tuning the valence charge of active ions.
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Affiliation(s)
- Xiaolin Jiang
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Tao Chen
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Bo Liu
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Rongke Sun
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Jiecai Fu
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Xiao Jiang
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Peng Cui
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Zhanqi Liu
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Weihua Han
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
- Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000, People's Republic of China
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21
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Balaji TE, Tanaya Das H, Maiyalagan T. Recent Trends in Bimetallic Oxides and Their Composites as Electrode Materials for Supercapacitor Applications. ChemElectroChem 2021. [DOI: 10.1002/celc.202100098] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- T. Elango Balaji
- Electrochemical Energy Laboratory Department of Chemistry SRM Institute of Science and Technology Kattankulathur Tamil Nadu 603 203 India
| | - Himadri Tanaya Das
- Department of Materials and Mineral Resources Engineering, NTUT No. 1, Sec. 3, Chung-Hsiao East Rd. Taipei 106 Taiwan, ROC
- Centre of Excellence for Advanced Materials and Applications Utkal university Vanivihar Bhubaneswar 751004 Odisha India
| | - T. Maiyalagan
- Electrochemical Energy Laboratory Department of Chemistry SRM Institute of Science and Technology Kattankulathur Tamil Nadu 603 203 India
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22
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Malima NM, Khan MD, Choi J, Gupta RK, Mashazi P, Nyokong T, Revaprasadu N. Solventless synthesis of nanospinel Ni 1−xCo xFe 2O 4 (0 ≤ x ≤ 1) solid solutions for efficient electrochemical water splitting and supercapacitance. RSC Adv 2021; 11:31002-31014. [PMID: 35498927 PMCID: PMC9041409 DOI: 10.1039/d1ra04833c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 09/10/2021] [Indexed: 11/21/2022] Open
Abstract
The formation of solid solutions represents a robust strategy for modulating the electronic properties and improving the electrochemical performance of spinel ferrites. However, solid solutions have been predominantly prepared via wet chemical routes, which involve the use of harmful and/or expensive chemicals. In the present study, a facile, inexpensive and environmentally benign solventless route is employed for the composition-controlled synthesis of nanoscopic Ni1−xCoxFe2O4 (0 ≤ x ≤ 1) solid solutions. The physicochemical characterization of the samples was performed by p-XRD, SEM, EDX, XPS, TEM, HRTEM and UV-Vis techniques. A systematic investigation was also carried out to elucidate the electrochemical performance of the prepared nanospinels towards energy generation and storage. Based on the results of CV, GCD, and stability tests, the Ni0.4Co0.6Fe2O4 electrode showed the highest performance for the supercapacitor electrode exhibiting a specific capacitance of 237 F g−1, superior energy density of 10.3 W h kg−1 and a high power density with a peak value of 4208 W kg−1, and 100% of its charge storage capacity was retained after 4000 cycles with 97% coulombic efficiency. For HER, the Ni0.6Co0.4Fe2O4 and CoFe2O4 electrodes showed low overpotentials of 168 and 169 mV, respectively, indicating better catalytic activity. For OER, the Ni0.8Co0.2Fe2O4 electrode exhibited a lower overpotential of 320 mV at a current density of 10 mA cm−2, with a Tafel slope of 79 mV dec−1, demonstrating a fast and efficient process. These results indicated that nanospinel ferrite solid solutions could be employed as promising electrode materials for supercapacitor and water splitting applications. The formation of solid solutions represents a robust strategy for modulating the electronic properties and improving the electrochemical performance of spinel ferrites.![]()
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Affiliation(s)
- Nyemaga Masanje Malima
- Department of Chemistry, University of Zululand, Private Bag X1001, KwaDlangezwa 3880, South Africa
- Department of Chemistry, College of Natural and Mathematical Sciences, University of Dodoma, P. O. Box 338, Dodoma, Tanzania
| | - Malik Dilshad Khan
- Department of Chemistry, University of Zululand, Private Bag X1001, KwaDlangezwa 3880, South Africa
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Jonghyun Choi
- Department of Chemistry, Pittsburg State University, Pittsburg, KS, 66762, USA
| | - Ram K. Gupta
- Department of Chemistry, Pittsburg State University, Pittsburg, KS, 66762, USA
| | - Philani Mashazi
- Department of Chemistry, Rhodes University, PO Box 94, Makhanda, 6140, South Africa
- Institute for Nanotechnology Innovation, Rhodes University, PO Box 94, Makhanda, 6140, South Africa
| | - Tebello Nyokong
- Institute for Nanotechnology Innovation, Rhodes University, PO Box 94, Makhanda, 6140, South Africa
| | - Neerish Revaprasadu
- Department of Chemistry, University of Zululand, Private Bag X1001, KwaDlangezwa 3880, South Africa
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23
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Malarvizhi M, Meyvel S, Sandhiya M, Sathish M, Dakshana M, Sathya P, Thillaikkarasi D, Karthikeyan S. Design and fabrication of cobalt and nickel ferrites based flexible electrodes for high-performance energy storage applications. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2020.108344] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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24
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Pan J, Li S, Li F, Yu T, Liu Y, Zhang L, Ma L, Sun M, Tian X. The NiFe2O4/NiCo2O4/GO composites electrode material derived from dual-MOF for high performance solid-state hybrid supercapacitors. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125650] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Li P, Wang J, Li L, Song S, Yuan X, Jiao W, Hao Z, Li X. Design of a ZnMoO 4 porous nanosheet with oxygen vacancies as a better performance electrode material for supercapacitors. NEW J CHEM 2021. [DOI: 10.1039/d1nj01219c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A ZnMoO4 porous nanosheet with oxygen vacancies (ZnMoO4-OV) was synthesized which delivers a preferable energy storage performance.
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Affiliation(s)
- Pengxi Li
- Purification Equipment Research Institute of CSSC
- Handan
- China
- School of Chemistry and Chemical Engineering
- Southeast University
| | - Jiepeng Wang
- Purification Equipment Research Institute of CSSC
- Handan
- China
- School of Materials Science and Engineering
- Shanghai University
| | - Liming Li
- Purification Equipment Research Institute of CSSC
- Handan
- China
| | - Shili Song
- Purification Equipment Research Institute of CSSC
- Handan
- China
| | - Xianming Yuan
- Purification Equipment Research Institute of CSSC
- Handan
- China
| | - Wenqiang Jiao
- Purification Equipment Research Institute of CSSC
- Handan
- China
| | - Zhen Hao
- Purification Equipment Research Institute of CSSC
- Handan
- China
| | - Xiaoli Li
- School of Materials Science and Engineering
- Hebei University of Engineering
- Handan
- China
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26
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Sheet-on-sheet like calcium ferrite and graphene nanoplatelets nanocomposite: A multifunctional nanocomposite for high-performance supercapacitor and visible light driven photocatalysis. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2020.121646] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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27
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Zhang X, Khan IU, Huo S, Zhao Y, Liang B, Li K, Wang H. In-situ integration of nickel-iron Prussian blue analog heterostructure on Ni foam by chemical corrosion and partial conversion for oxygen evolution reaction. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.137211] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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28
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Bao H, Wang JA, Yuan W, Luo J. Estimation of the spatial distribution of Frenkel defects in NiFe 2O 4 by simulation of HAADF-STEM images. NANOSCALE 2020; 12:22668-22673. [PMID: 33155601 DOI: 10.1039/d0nr06183b] [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
Accurate determination of the atomic spatial configuration of Frenkel defects is important for understanding the mechanism and fully utilizing these defects to optimize the material properties. In this study, aberration-corrected scanning transmission electron microscopy (STEM) was used to identify the Fe vacancies and Fe Frenkel defect pairs, which have not been previously investigated, in NiFe2O4 (NFO). The spatial distribution of these point defects is determined by comparing the experimental and simulated images, where the experimental image intensities are consistent with the calculated image intensities. We confirmed the stabilities of the observed point defect configurations and calculated their electronic structures using density functional theory. A comprehensive understanding of the relationship between the Frenkel defect spatial configurations and electronic properties is obtained, which provides an alternative method to regulate the NFO performance.
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Affiliation(s)
- Haihong Bao
- Center for Electron Microscopy and Tianjin Key Lab of Advanced Functional Porous Materials, Institute for New Energy Materials & Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China.
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29
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Kumar V, Panda HS. Observation of morphology resembling Hydrangea macrophylla flower in SILAR-deposited MFe 2O 4 (M=Co 2+, Ni 2+, Mn 2+) nanocrystallites: synergetic effect on electrochemical performance. NANOTECHNOLOGY 2020; 31:415402. [PMID: 32554898 DOI: 10.1088/1361-6528/ab9e29] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The successive ionic layer adsorption and reaction (SILAR) experimental process has been used to develop a high-efficiency electrode of MFe2O4 (M = Ni, Co and Mn) on substrates at ambient temperature. Structural, morphological and electrochemical properties have been investigated using x-ray diffraction (XRD), a scanning electron microscope (SEM) and an electrochemical test station, respectively. A morphology resembling the Hydrangea macrophylla flower has been observed and tuned with varying Fe concentration. The formation of MFe2O4 demonstrates the efficient electrochemical behavior and the specific capacitance has been evaluated as ∼1380, ∼972 and ∼815 Fg-1 for CoFe2O4 (CF), NiFe2O4 (NF) and MnFe2O4 (MF), respectively, at a current density of 1 Ag-1. Also, the developed electrodes maintain excellent cyclic retention of ∼92%, ∼89% and ∼86% for CF, NF, and MF, respectively, up to 5000 cycles. Further, asymmetric solid-state supercapacitor (ASC) devices have been fabricated using the best compositions of MFe2O4 as a positive electrode and carbon black (CB) as a negative electrode, and successfully illuminate a 1.8 V commercial LED.
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Affiliation(s)
- Viresh Kumar
- Sustainable Energy Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology, Girinagar, Pune 411025, India
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30
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Zhou Y, Huang Z, Li J, Liao H, Wang H, Wang Y, Wu G. D-ribose directed one-step fabrication of modifier-free C/NiCo2O4 nanowires with advanced electrochemical performance. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136926] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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31
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Lei X, Li Y, Weng C, Liu Y, Liu W, Hu J, Yang C, Lin Z, Liu M. Construction of heterostructured NiFe 2O 4-C nanorods by transition metal recycling from simulated electroplating sludge leaching solution for high performance lithium ion batteries. NANOSCALE 2020; 12:13398-13406. [PMID: 32614005 DOI: 10.1039/d0nr02290j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
NiFe2O4 has been regarded as one of the promising candidates for lithium-ion battery (LIB) anode materials due to its high theoretical specific capacity. However, the large volume expansion and pulverization of NiFe2O4 during the charge/discharge process result in severe capacity fading. Herein, heterostructured NiFe2O4-C nanorods have been successfully fabricated by recovering transition metals from simulated electroplating sludge leaching solution. The constructed NiFe2O4-C heterointerface plays a vital role in accommodating volume change, stabilizing the reaction products and providing rapid electron and Li+ ion transportation ability, resulting in a high and stable Li+ accommodation performance. The fabricated NiFe2O4-C nanorods demonstrate a high specific capacity (889.9 mA h g-1 at 100 mA g-1), impressive rate capability (861.5, 704.5, 651.4, 579.6 and 502.1 mA h g-1 at 0.2, 0.6, 1.0, 2.0 and 5.0 A g-1) and cycling stability (650.2 mA h g-1 at 2 A g-1 after 500 cycles). This work exemplifies a facile and effective approach for the fabrication of high performance LIB electrode materials by recycling metals from electroplating sludge in an application-oriented manner.
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Affiliation(s)
- Xueqian Lei
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China.
| | - Youpeng Li
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China.
| | - Changzhou Weng
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China.
| | - Yanzhen Liu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China.
| | - Weizhen Liu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China.
| | - Junhua Hu
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Chenghao Yang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China.
| | - Zhang Lin
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China.
| | - Meilin Liu
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA
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32
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Wu L, Sun L, Li X, Zhang Q, Zhang Y, Gu J, Wang K, Zhang Y. CuCo 2 S 4 -rGO Microflowers: First-Principle Calculation and Application in Energy Storage. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001468. [PMID: 32519390 DOI: 10.1002/smll.202001468] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/30/2020] [Accepted: 04/30/2020] [Indexed: 06/11/2023]
Abstract
This paper demonstrates the ability of a CuCo2 S4 -reduced graphene oxide (rGO) composite to perform robust electrochemical performances applying to supercapacitors (SCs) and lithium ion batteries (LIBs). The first-principle calculation based on density functional theory is conducted to study the electronic property of CuCo2 O4 and CuCo2 S4 and provide a theoretical basis for this work. Then, the 3D spinel-structured CuCo2 O4 and CuCo2 S4 microflowers are synthesized and compared as electrodes for both SCs and LIBs. The CuCo2 S4 microflowers can provide a larger specific surface area, which enlarges the contact area between the electrode material and the electrolyte and contributes to high-efficiency electrochemical reactions. The reduced graphene oxides are coated on the CuCo2 S4 microflowers, therefore effectively increasing the conductivity, and further absorbing the stress produced in the reaction process. As an electrode of a symmetric supercapacitor, the optimized CuCo2 S4 -rGO composite exhibits an energy density of 16.07 Wh kg-1 and a maximum power density of 3600 W kg-1 . Moreover, the CuCo2 S4 -rGO composite can also be used as an anode for lithium ion batteries, exhibiting a reversible capacity of 1050 mAh g-1 after 140 cycles at the current density of 200 mA g-1 . The galvanostatic intermittence titration techniques also reveal superior Li-ion diffusion behavior of the CuCo2 S4 -rGO composite during redox reactions.
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Affiliation(s)
- Lin Wu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, P. R. China
| | - Li Sun
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, P. R. China
| | - Xiaowei Li
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, P. R. China
| | - Qiuyu Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, P. R. China
| | - Yuanxing Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, P. R. China
| | - Jialin Gu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, P. R. China
| | - Ke Wang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, P. R. China
| | - Yihe Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, P. R. China
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33
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Rajasekhara Reddy G, Siva Kumar N, Deva Prasad Raju B, Shanmugam G, Al-Ghurabi EH, Asif M. Enhanced Supercapacitive Performance of Higher-Ordered 3D-Hierarchical Structures of Hydrothermally Obtained ZnCo 2O 4 for Energy Storage Devices. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1206. [PMID: 32575653 PMCID: PMC7353117 DOI: 10.3390/nano10061206] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/10/2020] [Accepted: 06/15/2020] [Indexed: 12/04/2022]
Abstract
The demand for eco-friendly renewable energy resources as energy storage and management devices is increased due to their high-power density and fast charge/discharge capacity. Recently, supercapacitors have fascinated due to their fast charge-discharge capability and high-power density along with safety. Herein, the authors present the synthesis of 3D-hierarchical peony-like ZnCo2O4 structures with 2D-nanoflakes by a hydrothermal method using polyvinylpyrrolidone. The reaction time was modified to obtain two samples (ZCO-6h and ZCO-12h) and the rest of the synthesis conditions were the same. The synthesized structures were systematically studied through various techniques: their crystalline characteristics were studied through XRD analysis, their morphologies were inspected through SEM and TEM, and the elemental distribution and oxidation states were studied by X-ray photoelectron spectroscopy (XPS). ZCO-12h sample has a larger surface area (55.40 m2·g-1) and pore size (24.69 nm) than ZCO-6h, enabling high-speed transport of ions and electrons. The ZCO-12h electrode showed a high-specific capacitance of 421.05 F·g-1 (31.52 C·g-1) at 1 A·g-1 and excellent cycle performance as measured by electrochemical analysis. Moreover, the morphologic characteristics of the prepared hierarchical materials contributed significantly to the improvement of specific capacitance. The excellent capacitive outcomes recommend the 3D-ZnCo2O4 hierarchical peony-like structures composed of 2D-nanoflakes as promising materials for supercapacitors with high-performance.
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Affiliation(s)
| | - Nadavala Siva Kumar
- Department of Chemical Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia; (E.H.A.-G.); (M.A.)
| | | | - Gnanendra Shanmugam
- Department of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Korea
| | - Ebrahim H. Al-Ghurabi
- Department of Chemical Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia; (E.H.A.-G.); (M.A.)
| | - Mohammad Asif
- Department of Chemical Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia; (E.H.A.-G.); (M.A.)
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34
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Boosting the electrochemical properties of polyaniline by one-step co-doped electrodeposition for high performance flexible supercapacitor applications. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114064] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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35
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Synthesis of magnetic g-C3N4/NiFe2O4 nanocomposites for enhanced visible-light photocatalytic performance. APPLIED NANOSCIENCE 2020. [DOI: 10.1007/s13204-020-01362-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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Mohammadi Zardkhoshoui A, Hosseiny Davarani SS. Formation of graphene-wrapped multi-shelled NiGa 2O 4 hollow spheres and graphene-wrapped yolk-shell NiFe 2O 4 hollow spheres derived from metal-organic frameworks for high-performance hybrid supercapacitors. NANOSCALE 2020; 12:1643-1656. [PMID: 31872846 DOI: 10.1039/c9nr09108d] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
To construct a supercapacitor (SC) with considerable performance, synthesis of an electrode material with a highly porous structure is necessary. Herein, an efficient metal-organic framework (MOF)-derived procedure is offered to construct a graphene wrapped multi-shelled NiGa2O4 hollow sphere (GW-MSNGOHS) positive electrode material and a graphene-wrapped yolk-shell NiFe2O4 hollow sphere (GW-YS-NFOHS) negative electrode material with a highly porous nature in SCs. The GW-MSNGOHS and GW-YS-NFOHS electrodes exhibit excellent capacities (∼411.25 mA h g-1 and 254.25 mA h g-1, respectively, at 1 A g-1), reasonable rate performances (75.85%, and 62.7%, respectively), and outstanding cyclability (98.9% and 90.9%, respectively). Benefiting from the reasonably engineered negative and positive electrodes, the fabricated asymmetric device (GW-MSNGOHS//GW-YS-NFOHS) can show an excellent energy density (ED) of 118.97 W h kg-1 at a power density (PD) of 1702 W kg-1, an exceptional robustness of 92.1%, and an excellent capacity (Cs) of 140.2 mA g-1.
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37
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Li S, Pan J, Li F, Zhang L, Chai D, Zhang Z, Xin J. Bimetallic FeNi-MIL-88-derived NiFe2O4@Ni–Mn LDH composite electrode material for a high performance asymmetric supercapacitor. Dalton Trans 2020; 49:10203-10211. [DOI: 10.1039/d0dt00251h] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A novel NiFe2O4@Ni–Mn LDH/NF composite was synthesized by deriving bimetallic FeNi-MIL-88, and has potential application as a high-performance supercapacitor.
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Affiliation(s)
- Shaobin Li
- College of Materials Science and Engineering
- Qiqihar University
- Qiqihar 161006
- China
| | - Jing Pan
- College of Materials Science and Engineering
- Qiqihar University
- Qiqihar 161006
- China
| | - Fengbo Li
- College of Chemical and Environmental Engineering
- Harbin University of Science and Technology
- Harbin 150040
- China
| | - Li Zhang
- College of Materials Science and Engineering
- Qiqihar University
- Qiqihar 161006
- China
| | - Dongfeng Chai
- Center of Teaching Experiment Management Equipment
- Qiqihar University
- Qiqihar 161006
- China
| | - Zhuanfang Zhang
- Center of Teaching Experiment Management Equipment
- Qiqihar University
- Qiqihar 161006
- China
| | - Jianjiao Xin
- Center of Teaching Experiment Management Equipment
- Qiqihar University
- Qiqihar 161006
- China
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38
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Li P, Ruan C, Xu J, Xie Y. A high-performance asymmetric supercapacitor electrode based on a three-dimensional ZnMoO 4/CoO nanohybrid on nickel foam. NANOSCALE 2019; 11:13639-13649. [PMID: 31290908 DOI: 10.1039/c9nr03784e] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A two-step hydrothermal route was employed to fabricate a ZnMoO4/CoO nanohybrid supported on Ni foam. The ZnMoO4/CoO nanohybrid shows a three-dimensional criss-crossed structure. The specific surface area is enhanced from 45 m2 g-1 of ZnMoO4 to 67 m2 g-1 of the ZnMoO4/CoO nanohybrid. Furthermore, the existence of electroactive CoO is in favor of reducing the charge transport resistance. The ZnMoO4/CoO nanohybrid electrode possesses a high capacitance of 4.47 F cm-2 at 2 mA cm-2, which is much higher than those of ZnMoO4 (1.07 F cm-2) and CoO (2.47 F cm-2). The ZnMoO4/CoO nanohybrid electrode also exhibits an ultrahigh cycling stability with 100.5% capacitance retention after 5000 cycles at 20 mA cm-2. In addition, an asymmetric all-solid-state supercapacitor was assembled using the ZnMoO4/CoO nanohybrid as the positive electrode and exfoliated graphite carbon paper as the negative electrode. The asymmetric supercapacitor exhibits a superior energy density of 58.6 W h kg-1 at a power density of 800 W kg-1 and a considerable cycling stability with 81.8% capacitance retention after 5000 cycles at 5 A g-1. The ZnMoO4/CoO nanohybrid demonstrates its tremendous advantages and possibilities as a positive electrode material in energy storage applications. Moreover, for a better understanding of the electrochemical behavior, a combined study of experimental measurements and density functional theory calculations is also applied to illustrate the high-performance of the ZnMoO4/CoO nanohybrid.
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Affiliation(s)
- Pengxi Li
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
| | - Chaohui Ruan
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
| | - Jing Xu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
| | - Yibing Xie
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
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39
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Abbas SK, Atiq S, Saleem M, Riaz S, Naseem S, Anwar MS. Fluoride ion assisted growth of hierarchical flowerlike nanostructures of Co/Ni ferrites and their magnetoresistive response. RSC Adv 2019; 9:17581-17590. [PMID: 35520564 PMCID: PMC9064568 DOI: 10.1039/c9ra03295a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 05/28/2019] [Indexed: 01/11/2023] Open
Abstract
One-dimensional nanorod arrays exhibiting hierarchical flowerlike morphologies, of Co and Ni based ferrites were synthesized by hydrothermal treatment and using ammonium fluoride (NH4F) as a mineralizing agent. The effects of NH4F concentration and synthesis temperature were probed to control the morphology of these nanorods that were formed as a result of crystal nucleation. It was observed that a higher concentration of NH4F leads to several other nucleation sites above these nanorods while controlled concentration of precursors and NH4F results in the synthesis of floral patterns. The specific geometries of these nanorods leads to a shape anisotropy effect resulting in increased magnetic coercive fields. To study the effect of magnetic field on the resistance and current density, impedance spectroscopy and I–V–R characteristics, respectively, were performed. Nanorods show enhanced values for resistance with the increase in magnetic field confirming the effect of magnetoresistive coupling while a decrease in current densities with increasing magnetic field highlights the potential of these structures for magnetoresistive applications. One-dimensional nanorod arrays of Co/Ni ferrites emerging into hierarchical flowerlike morphologies, prepared by hydrothermal treatment, using ammonium fluoride (NH4F) as a mineralizing agent.![]()
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Affiliation(s)
- Syed Kumail Abbas
- Centre of Excellence in Solid State Physics, University of the Punjab Lahore-54590 Pakistan
| | - Shahid Atiq
- Centre of Excellence in Solid State Physics, University of the Punjab Lahore-54590 Pakistan
| | - Murtaza Saleem
- Department of Physics, Syed Babar Ali School of Science and Engineering (SSE), Lahore University of Management Sciences (LUMS) Opposite Sector U, D.H.A. Lahore 54792 Pakistan
| | - Saira Riaz
- Centre of Excellence in Solid State Physics, University of the Punjab Lahore-54590 Pakistan
| | - Shahzad Naseem
- Centre of Excellence in Solid State Physics, University of the Punjab Lahore-54590 Pakistan
| | - M Sabieh Anwar
- Department of Physics, Syed Babar Ali School of Science and Engineering (SSE), Lahore University of Management Sciences (LUMS) Opposite Sector U, D.H.A. Lahore 54792 Pakistan
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40
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Chen K, Zhang Z, Xia K, Zhou X, Guo Y, Huang T. Facile Synthesis of Thiol-Functionalized Magnetic Activated Carbon and Application for the Removal of Mercury(II) from Aqueous Solution. ACS OMEGA 2019; 4:8568-8579. [PMID: 31459947 PMCID: PMC6648564 DOI: 10.1021/acsomega.9b00572] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 05/06/2019] [Indexed: 05/31/2023]
Abstract
To improve the adsorption capacity, reduce the disposal cost, and enhance the separation efficiency of common activated carbon as an adsorbent in wastewater treatment, a novel thiol-modified magnetic activated carbon adsorbent of NiFe2O4-PAC-SH was successfully synthesized with a facile and safe hydrothermal method without any toxic and harmful reaction media. The as-prepared NiFe2O4-PAC-SH can effectively remove mercury(II) ions from aqueous solution. The maximal adsorption capacities from the experiment and Langmuir fitting achieve 298.8 and 366.3 mg/g at pH 7, respectively, exceeding most of adsorptive materials. The as-prepared NiFe2O4-PAC-SH has an outstanding regeneration performance, remarkable hydrothermal stability, and efficient separation efficiency. The data of kinetics, isotherms, and thermodynamics show that the adsorption of mercury(II) ions is spontaneous and exothermic. Ion exchange and electrostatic attraction are the main adsorption factors. The experimental results exhibit that the NiFe2O4-PAC-SH can be a prominent substitute for conventional activated carbon as an adsorbent.
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Affiliation(s)
- Kuan Chen
- Center
for Separation and Purification Materials & Technologies and Jiangsu Provincial
Key Laboratory of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Zhenzong Zhang
- Center
for Separation and Purification Materials & Technologies and Jiangsu Provincial
Key Laboratory of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Kai Xia
- Center
for Separation and Purification Materials & Technologies and Jiangsu Provincial
Key Laboratory of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Xiaoji Zhou
- Center
for Separation and Purification Materials & Technologies and Jiangsu Provincial
Key Laboratory of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Yongfu Guo
- Center
for Separation and Purification Materials & Technologies and Jiangsu Provincial
Key Laboratory of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Tianyin Huang
- Center
for Separation and Purification Materials & Technologies and Jiangsu Provincial
Key Laboratory of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
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41
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Wei W, Wu J, Cui S, Zhao Y, Chen W, Mi L. α-Ni(OH) 2/NiS 1.97 heterojunction composites with excellent ion and electron transport properties for advanced supercapacitors. NANOSCALE 2019; 11:6243-6253. [PMID: 30882128 DOI: 10.1039/c9nr00962k] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
It is recognized that an effective strategy to promote the industrialization of supercapacitors is to enhance the ion and electronic conductivities of electrode materials. In this work, it is demonstrated that the NO/NS-8 heterojunction material obtained via an epitaxial growth method based on ion exchange can be used as an outstanding electrode material for supercapacitors. The construction of heterojunctions between α-Ni(OH)2 and NiS1.97 allows the components to provide each other with ion or electron transport paths and endows NO/NS-8 with excellent ion and electron transport properties; this leads to a high utilization rate of active materials and an unprecedented high specific capacitance (up to 2375.8 F g-1 at 1 mV s-1 in a three-electrode system). Using the as-prepared NO/NS-8 heterojunction material as an electroactive material, an asymmetric supercapacitor with long cycle life (62.8% capacitance retention after 10 000 cycles at a current density of 5 A g-1) and high energy and power densities (128.4 W h kg-1 at a power density of 402.9 W kg-1 and 63.8 W h kg-1 at 7662.7 W kg-1) is finally demonstrated. This work provides a novel strategy for developing unique heterojunction materials for energy storage.
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Affiliation(s)
- Wutao Wei
- Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, China.
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42
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Gao M, Le K, Du W, Wang Z, Wang F, Liu W, Liu J. Enhanced supercapacitive performance of the CoFe2O4/CoFe2S4 composite nanoflake array induced by surface sulfidation. NEW J CHEM 2019. [DOI: 10.1039/c9nj02306b] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The CoFe2O4/CoFe2S4 composite nanoflake array was prepared by surface sulfidation and exhibited outstanding electrochemical performance.
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Affiliation(s)
- Mengjiao Gao
- Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials
- Ministry of Education and College of Materials Science and Engineering
- Shandong University
- Jinan
- China
| | - Kai Le
- Institute of Crystal Materials
- Shandong University
- Jinan
- China
| | - Wenjing Du
- Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials
- Ministry of Education and College of Materials Science and Engineering
- Shandong University
- Jinan
- China
| | - Zhou Wang
- Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials
- Ministry of Education and College of Materials Science and Engineering
- Shandong University
- Jinan
- China
| | - Fenglong Wang
- Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials
- Ministry of Education and College of Materials Science and Engineering
- Shandong University
- Jinan
- China
| | - Wei Liu
- Institute of Crystal Materials
- Shandong University
- Jinan
- China
| | - Jiurong Liu
- Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials
- Ministry of Education and College of Materials Science and Engineering
- Shandong University
- Jinan
- China
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