Rechargeable lithium batteries have been widely used for consumer electronics and are desirable for the development of hybrid electric vehicles and electric vehicles, due to their high energy density and good environm...
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Rechargeable lithium batteries have been widely used for consumer electronics and are desirable for the development of hybrid electric vehicles and electric vehicles, due to their high energy density and good environment *** enhanced electrochemical performance of electrodes depends on not only the material intrinsic characteristics, but also the designed ***-dimensional (1D) nanostructures can offer large surface area and efficient electron transport pathway to achieving high *** a functional nanostructure, nanoscroll with open ends/edges could provide easy radial expansion by interlayer sliding to buffer the swelling during lithiation/delithiation.
Lithium-ion batteries (LIBs) are receiving considerable attention as storage devices in the renewable and sustainable energy ***, facile fabrication of long-life and high-rate cathode materials for LIBs is required to...
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Lithium-ion batteries (LIBs) are receiving considerable attention as storage devices in the renewable and sustainable energy ***, facile fabrication of long-life and high-rate cathode materials for LIBs is required to facilitate practical application.
One-dimensional nanomaterials have attracted significant attention for a wide range of energy-related applications due to such unique advantages as short Li-ion insertion/extraction distance, facile strain relaxation ...
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One-dimensional nanomaterials have attracted significant attention for a wide range of energy-related applications due to such unique advantages as short Li-ion insertion/extraction distance, facile strain relaxation upon electrochemical cycling, enhanced electron transport, and very large surface to volume ratio.
Mechanical stability is of vital significance in commercial application of thermoelectric *** essential mechanical behaviours of a nanoporous skutterudite thermoelectric material have been studied by the molecular dyn...
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Mechanical stability is of vital significance in commercial application of thermoelectric *** essential mechanical behaviours of a nanoporous skutterudite thermoelectric material have been studied by the molecular dynamics method. The research results reveal that the nanoporous skutterudite is a typical non-linear elastic brittle material, and that the existence of nanopores can remarkably reduce the mechanical properties of the skutterudite. Further research results reveal that the elastic modulus of the nanoporous skutterudite decreases with the growing porosity, and the relationship between the elastic modulus and the porosity can be summarised by an inversely proportional scaling law. The ultimate stress reduces gradually with the decreasing inner nanopore spacing. The fracture strain first decreases and then levels off, which can be attributed to the interplay between the increased porosity and the reduced inner nanopore spacing.
The shear property of the thermoelectric material Bi2Te3 is inextricably linked with its layer structure. By the molecular dynamics method, the mechanism of shearing deformation was studied in this paper. In the simul...
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The shear property of the thermoelectric material Bi2Te3 is inextricably linked with its layer structure. By the molecular dynamics method, the mechanism of shearing deformation was studied in this paper. In the simulation,cubic single-crystal simulation cells with different layer directions inside were adopted, ensuring that the caxis of crystal lattice can be along, across and 45o deviated from the shear stress. Compared with all the calculation models, the results show that when the shear stress increases, slip occurs along the Te1-Te1 adjacent layers which are connected by the weak van der Waals bonding, and ultimately leads to structural fracture. Furthermore, size effect and loading modes can also impact the behavior of shearing deformation, however, in very different ways. Future efforts should be focused on the influence of the creation and motion of defectsduring the deformation as well as temperature effect and strain rate effect.
Rare earth metal oxides（REMO） as cathode electrocatalysts in direct borohydride fuel cell（DBFC） were *** REMO electrocatalysts tested showed favorable activity to the oxygen electro-reduction reaction and strong t...
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Rare earth metal oxides（REMO） as cathode electrocatalysts in direct borohydride fuel cell（DBFC） were *** REMO electrocatalysts tested showed favorable activity to the oxygen electro-reduction reaction and strong tolerance to the attack of BH 4-in alkaline *** simple membraneless DBFCs using REMO as cathode electrocatalyst and using hydrogen storage alloy as anodic electrocatalyst exhibited an open circuit of about 1 V and peak power of above 60 mW/cm *** DBFC using Sm 2 O 3 as cathode electrocatalyst showed a relatively better *** maximal power density of 76.2 mW/cm 2 was obtained at the cell voltage of 0.52 V.
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