The Experts below are selected from a list of 609612 Experts worldwide ranked by ideXlab platform
G. Muralidharan - One of the best experts on this subject based on the ideXlab platform.
-
Co_3S_4-CoS/rGO hybrid Nanostructure: promising material for high-performance and high-rate capacity supercapacitor
Journal of Solid State Electrochemistry, 2020Co-Authors: S. Nandhini, G. MuralidharanAbstract:The task of developing hybrid Nanostructured materials to enhance the energy and power density of energy storage devices has assumed greater significance in the past decade. The present research work demonstrates the hydrothermal preparation of graphene-blended Co_3S_4-CoS Nanostructures (CSG) and the fabrication of a symmetric supercapacitor device. The CSG was examined through structural, morphological, surface area and electrochemical characterization. The CSG Nanostructures yielded a maximum specific capacitance of 1003 F g^−1 at 5 A g^−1 with excellent rate capacitance (43%) at 50 A g^−1. The CSG Nanostructure shows 97% cycling stability over 2600 cycles. The well-blended structure, high conductivity and large surface area of CSG contribute to the best capacitive performance. A CSG-based symmetric supercapacitor device offered a great energy density of 26.7 W h kg^−1 at 1 A g^−1. The device exhibits good cyclic stability even after 5000 cycles. Three devices connected in series (4.5 V) were charged for 141 s at a current of 10 A could power up red and green LEDs for over 600 s and 480 s, respectively. The obtained electrochemical results and exceptional performance of symmetric devices endorse CSG to be a promising material for energy storage applications.
-
Co_3S_4-CoS/rGO hybrid Nanostructure: promising material for high-performance and high-rate capacity supercapacitor
Journal of Solid State Electrochemistry, 2020Co-Authors: S. Nandhini, G. MuralidharanAbstract:The task of developing hybrid Nanostructured materials to enhance the energy and power density of energy storage devices has assumed greater significance in the past decade. The present research work demonstrates the hydrothermal preparation of graphene-blended Co_3S_4-CoS Nanostructures (CSG) and the fabrication of a symmetric supercapacitor device. The CSG was examined through structural, morphological, surface area and electrochemical characterization. The CSG Nanostructures yielded a maximum specific capacitance of 1003 F g^−1 at 5 A g^−1 with excellent rate capacitance (43%) at 50 A g^−1. The CSG Nanostructure shows 97% cycling stability over 2600 cycles. The well-blended structure, high conductivity and large surface area of CSG contribute to the best capacitive performance. A CSG-based symmetric supercapacitor device offered a great energy density of 26.7 W h kg^−1 at 1 A g^−1. The device exhibits good cyclic stability even after 5000 cycles. Three devices connected in series (4.5 V) were charged for 141 s at a current of 10 A could power up red and green LEDs for over 600 s and 480 s, respectively. The obtained electrochemical results and exceptional performance of symmetric devices endorse CSG to be a promising material for energy storage applications.
S. Nandhini - One of the best experts on this subject based on the ideXlab platform.
-
Co_3S_4-CoS/rGO hybrid Nanostructure: promising material for high-performance and high-rate capacity supercapacitor
Journal of Solid State Electrochemistry, 2020Co-Authors: S. Nandhini, G. MuralidharanAbstract:The task of developing hybrid Nanostructured materials to enhance the energy and power density of energy storage devices has assumed greater significance in the past decade. The present research work demonstrates the hydrothermal preparation of graphene-blended Co_3S_4-CoS Nanostructures (CSG) and the fabrication of a symmetric supercapacitor device. The CSG was examined through structural, morphological, surface area and electrochemical characterization. The CSG Nanostructures yielded a maximum specific capacitance of 1003 F g^−1 at 5 A g^−1 with excellent rate capacitance (43%) at 50 A g^−1. The CSG Nanostructure shows 97% cycling stability over 2600 cycles. The well-blended structure, high conductivity and large surface area of CSG contribute to the best capacitive performance. A CSG-based symmetric supercapacitor device offered a great energy density of 26.7 W h kg^−1 at 1 A g^−1. The device exhibits good cyclic stability even after 5000 cycles. Three devices connected in series (4.5 V) were charged for 141 s at a current of 10 A could power up red and green LEDs for over 600 s and 480 s, respectively. The obtained electrochemical results and exceptional performance of symmetric devices endorse CSG to be a promising material for energy storage applications.
-
Co_3S_4-CoS/rGO hybrid Nanostructure: promising material for high-performance and high-rate capacity supercapacitor
Journal of Solid State Electrochemistry, 2020Co-Authors: S. Nandhini, G. MuralidharanAbstract:The task of developing hybrid Nanostructured materials to enhance the energy and power density of energy storage devices has assumed greater significance in the past decade. The present research work demonstrates the hydrothermal preparation of graphene-blended Co_3S_4-CoS Nanostructures (CSG) and the fabrication of a symmetric supercapacitor device. The CSG was examined through structural, morphological, surface area and electrochemical characterization. The CSG Nanostructures yielded a maximum specific capacitance of 1003 F g^−1 at 5 A g^−1 with excellent rate capacitance (43%) at 50 A g^−1. The CSG Nanostructure shows 97% cycling stability over 2600 cycles. The well-blended structure, high conductivity and large surface area of CSG contribute to the best capacitive performance. A CSG-based symmetric supercapacitor device offered a great energy density of 26.7 W h kg^−1 at 1 A g^−1. The device exhibits good cyclic stability even after 5000 cycles. Three devices connected in series (4.5 V) were charged for 141 s at a current of 10 A could power up red and green LEDs for over 600 s and 480 s, respectively. The obtained electrochemical results and exceptional performance of symmetric devices endorse CSG to be a promising material for energy storage applications.
Liuzhang Ouyang - One of the best experts on this subject based on the ideXlab platform.
-
Recent advances and remaining challenges of Nanostructured materials for hydrogen storage applications
Progress in Materials Science, 2017Co-Authors: Xuebin Yu, Ziwei Tang, Liuzhang OuyangAbstract:Abstract The rapid and extensive development of advanced Nanostructures and nanotechnologies has driven a correspondingly rapid growth of research that presents enormous potential for fulfilling the practical requirements of solid state hydrogen storage applications. This article reviews the most recent progress in the development of Nanostructured materials for hydrogen storage technology, demonstrating that Nanostructures provide a pronounced benefit to applications involving molecular hydrogen storage, chemical hydrogen storage, and as supports for the nanoconfinement of various hydrides. To further optimize hydrogen storage performance, we emphasize the desirability of exploring and developing nanoporous materials with ultrahigh surface areas and the advantageous incorporation of metals and functionalities, Nanostructured hydrides with excellent mechanic stabilities and rigid main construction, and Nanostructured supports comprised of lightweight components and enhanced hydride loading capacities. In addition to highlighting the conspicuous advantages of Nanostructured materials in the field of hydrogen storage, we also discuss the remaining challenges and the directions of emerging research for these materials.
G P Srivastava - One of the best experts on this subject based on the ideXlab platform.
-
Lattice dynamics of silicon Nanostructures
NANOTECHNOLOGY, 2006Co-Authors: G P SrivastavaAbstract:The lattice dynamical results of silicon Nanostructures with all three different degrees of confinement (nanoslabs, nanowires, nanodots) are systematically analysed and presented using an adiabatic bond charge model. In the direction of propagation of these structures, it is found that the phonon branches change from flat, for the smallest Nanostructures, to dispersive as the Nanostructure size increases. It is also noted that in the direction of confinement all but the acoustic branches are generally flat, with very little dispersion. The trends in the variations of the lowest and highest confined modes at the Brillouin zone centre with Nanostructure size are investigated. In particular, analytic expressions for the size variation of the highest mode with the dimensionality of the Nanostructures have been presented. Also, an analytic fit has been presented for the size variation of the lowest non-zero acoustic mode with structure size. Finally, numerical calculations based upon Fermi's Golden Rule formula of the dependence of the lifetime of the lowest confined mode on Nanostructure size and temperature have also been obtained and discussed.
Aldo R. Boccaccini - One of the best experts on this subject based on the ideXlab platform.
-
Biodegradable Nanostructures: Degradation process and biocompatibility of iron oxide Nanostructured arrays.
Materials science & engineering. C Materials for biological applications, 2017Co-Authors: Yuyun Yang, Juncen Zhou, Rainer Detsch, Nicola Taccardi, Svenja Heise, Sannakaisa Virtanen, Aldo R. BoccacciniAbstract:Abstract Surface Nanostructures like titanium oxide nanotubes and nanopores have revealed excellent functionalization performance and good corrosion resistance. In certain cases, biodegradability is, however, an advantageous feature for implant materials. Recently iron-based materials have been studied as promising degradable biomaterials. In order to functionalize biodegradable iron-based materials, oxide Nanostructured arrays have been used as a surface functionalization approach. In this study, two different iron oxide Nanostructures, nanopores and nanotube arrays with different thicknesses, were fabricated on pure iron by an anodization method. The influence of anodization conditions on the morphology of the novel Nanostructures was investigated. The degradation behavior is essential to the biomedical application of iron oxide Nanostructured arrays. Hence electrochemical and immersion tests in simulated body fluid (SBF) solution were conducted to reveal details and the mechanism of the degradation process. Surface composition and morphology of immersed iron oxide Nanostructures were investigated. Furthermore, indirect contact cell experiments were carried out by employing extracts from immersion solution of iron oxide Nanostructures on human osteoblast-like MG-63 cells. Results of the in vitro tests indicated no cytotoxicity caused by the extracts of the nanoarrays on pure iron. The current understanding of the degradation process and cytocompatibility of iron oxide Nanostructures gained from this work is essential for their further study and for considering biomedical application of such Nanostructures.
