Figure - available from: Ionics
This content is subject to copyright. Terms and conditions apply.
Source publication
In this study, the NiCo2O4 nanofibers derived from metal-organic frameworks (MOFs) are produced through electrospinning, in situ growth with following calcination. The electrode materials with various morphologies are developed by adjusting the in situ growth duration. The NiCo2O4-6 (NCO-6) nanofibers grown for 6 h exhibit large specific surface ar...
Similar publications
The growing scientific interest in one-dimensional (1D) nanostructures based on metal-oxide semiconductors (MOS) resulted in the analysis of their structure, properties and fabrication methods being the subject of many research projects and publications all over the world, including in Poland. The application of the method of electrospinning with s...
Citations
... Up to now, many conversion-type materials have been extensively investigated for LIBs due to their high theoretical capacities together with the cost-effectiveness [8][9][10][11][12]. Among various conversion-type materials, iron-based anodes have been particularly concerned relying on their high theoretical capacities, intrinsic safety and hypotoxicity features for lithium storage [13,14]. ...
Iron-based anode materials have aroused wide attention due to the multiple advantages of high capacity, abundant resources, eco-friendly and low-cost features, whereas the big volume changes upon cycling and low conductivity limit their practical applications. Herein, the dopamine N-doped carbon-encapsulated Fe3O4 and Fe7S8 hollow nanospheres (Fe3O4@NC and Fe7S8@NC) have been designed via a facile synthesis strategy. The hierarchical hollow structure of inner Fe3O4/Fe7S8 restrains the big volume fluctuation upon cycling. The outer tightly wrapped N-doped carbon shell effectively enhances the conductivity of overall electrode and meanwhile serves as the protective layer to inhibit the structure collapse. The strong chemical bonding effects between Fe3O4/Fe7S8 and N-doped carbon construct such stable structures. As expected, both two composites show excellent lithium storage performances owing to the cooperative effect of N-doped carbon shell and internal active material. The reversible capacity of Fe3O4@NC/Fe7S8@NC reaches as high as 830/690 mAh g⁻¹ over 1500/500 loops even at a high rate of 2 A g⁻¹. The excellent electrochemical performances of Fe3O4@NC/Fe7S8@NC demonstrate their potential merits as next-generation anodes for lithium-ion batteries.
... 30 Similarly, the characteristic peaks located at 779.3, 794.1, 781.7 and 796.1 eV for the Co 2p spectrum (Fig. 2c) were associated with Co 3+ 2p 3/2 and Co 3+ 2p 1/2 , Co 2+ 2p 3/2 and Co 2+ 2p 1/2 , respectively. 31 Another two satellite peaks located at 786.4 and 800.0 eV were on account of the splitting of the spin orbitals. For the O 1s spectrum (Fig. 2d), three distinct peaks at 528.7, 530.5 and 532.1 eV corresponding to O1 (Co-O and Fe-O bonds), O2 (oxygen vacancies) and O3 (-OH species), 32 respectively, were displayed. ...
A porous CoFe2O4/carbon composite nanofibers with metal-organic frameworks (MOFs) structure are prepared by electrospinning, in-situ growth followed by annealing. CoFe2O4 particles derived from prussian blue analogue (PBA) are firmly anchored...
Abstract
Due to their vast surface area and superior porosity structure, metal-organic frameworks (MOFs) derived materials have recently presented a significant promise for better lithium-ion batteries (LIBs). Herein, we synthesised MOF-derived porous NiCo2O4 nanofile arrays from a simple solvothermal technique followed by calcination at 450 °C. The prepared sample was characterized by X-ray diffraction, thermogravimetric, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy and Brunauer-Emmett-Teller. The acquired nanofile array morphology achieved a large specific surface area of 189 m2/g can shorten the Li ions (Li+) transport and enhance the electrochemical performance. As expected, the prepared electrode reveals a discharge-specific capacity of around 1120 mAh/g at a 0.1 C rate. At 2 C rate, the electrode's specific capacity can still reach 210 mAh/g after 100 cycles. The pseudocapacitive nature of NiCo2O4 was determined by kinetic analysis, revealing the diffusion-controlled faradaic behaviour. Our prepared electrode material is considered an attractive option for the anode material in rechargeable Li-ion batteries because it has been proven to have a relatively good specific capacity and cycling stability.
The lithium-ion (Li-ion) battery has received considerable attention in the field of energy conversion and storage due to its high energy density and eco-friendliness. Significant academic and commercial progress has been made in Li-ion battery technologies. One area of advancement has been the addition of nanofiber materials to Li-ion batteries due to their unique and desirable structural features including large aspect ratios, high surface areas, controllable chemical compositions, and abundant composite forms. In the past few decades, considerable research efforts have been devoted to constructing advanced nanofiber materials possessing conductive networks to facilitate efficient electron transport and large specific surface areas to support catalytically active sites, both for the purpose of boosting electrochemical performance. Herein, we focus on recent advancements of nanofiber materials with carefully designed structures and enhanced electrochemical properties for use in Li-ion batteries. The synthesis, structure, and properties of nanofiber cathodes, anodes, separators, and electrolytes, and their applications in Li-ion batteries are discussed. The research challenges and prospects of nanofiber materials in Li-ion battery applications are delineated.Graphic Abstract
The ongoing demand for the development of intelligent devices has greatly inspired the development of metallic nanostructure incorporated composite electrospun mats. The astounding characteristics of the metallic nanoparticle-loaded hybrid assemblies, such as antimicrobial, charge transfer, energy storage, etc., have been known to precisely contribute to the target applications with enhanced functional efficacy. In this review, the recent advances in the development of multifunctional transition metal-based electrospun nanofibrous materials (ENMs) for designing high-performance sensors, biomedical and electrochemical devices are discussed. The influence of various transition metals and their oxides on the physico-mechanical performance of various ENMs has been critically dealt with. Further, the currently employed fabrication techniques for designing ENM-based advanced engineered nanomaterials have also been thoroughly summarized. Finally, prospects on the future challenges in the development of ENMs are discussed. This review may provide insightful inspiration for designing, utilization, and performance enhancement for designing novel ENM-based devices. Thus, the review not only highlights the modern design principles and recent breakthroughs in emerging applications but also brings forth a fresh perspective for upcoming research in the field of transition metal-based ENMs.
