[PDF] Top 20 Li and Na Storage Behaviours of MgFe2O4 Nanoparticles as Anode Materials for Lithium Ion and Sodium Ion Batteries

... ions, which leads to the high interface impedance, large volume expansion and slow ion diffusion[20]. As shown in Fig. 3a, there are two apparent plateaus at 0.79 and 0.37 V in the initial discharge process that ... See full document

... Rechargeable ion batteries were widely used in the area of electrochemical energy storage due to their high energy ...rechargeable ion batteries have been developed as energy ... See full document

... decrease at 0.1 A g -1 in the first ten cycles from about 1200 mAh g -1 to 300 mAh g -1 , and kept relatively stable at other large current densities during the following cycles. This may be attributed to the solid ... See full document

... followed an etching treatment and finally filled the material by carbon. SEM and HRTEM images of as-synthesized G/Si-C micro-sized particles revealed that graphene sheets wrapped the Si-C particles. Moreover, Figure 1.13 ... See full document

... by Li + when the 16c sites of the spinel structure exceed the storage limit ...nanosized materials that have larger specific surface area, leading to storage properties of surface region ... See full document

... Si nanoparticles only deliver the reversible capacity of 888 mAh g −1 and 425 mAh g −1 for the first and the 95 th cycles, ...active materials, better dispersion of Si nanoparticles, and good ... See full document

... the composites led to the increase of the specific capacity, but at the cost of cyclic stability. Our study indicates that the optimized composites (M-400) present the best electrochemical property, exhibiting a charge ... See full document

... for lithium-ion battery anodes because of its ultrahigh ...composite materials in which crystalline Si nanoparticles are embedded in amorphous Si-M 2 O 3 (M = ... See full document

... as anode for battery ...these materials that have a unique properties and meet anode materials ...energy storage and conversion, and ...energy storage and conversion mainly for ... See full document

... The crystalline metal oxide was present on the cotton fibers, as shown in the X-ray diffraction (XRD) spectrum in Figure 1A. This profile is consistent with the hexagonal phase of ZnO [42], while very broad peaks ... See full document

... excellent lithium storage properties as the anode of ...for lithium storage were extremely ...of lithium ions and ...as Li + active sites on the surface of graphene ... See full document

... inserting lithium is ca 9 Li per formula unit, indicating that Cr 3+ has been completely reduced to metal Cr and the extra lithium storage capacity may be derived from interfacial ... See full document

... advanced anode material for high-performance lithium-ion ...4 nanoparticles obtained are 10-30 nm in size and homogeneously anchor on ... See full document

... The SEM image shows that the as-synthesized sample has a morphology of irregular particles with a diameter of ca. 125 nm in Fig. 1. X-ray diffraction displays that these nanoparticles are crystalline not amorphous ... See full document

... for Li ion ...promising anode material for Li ion batteries because of its low cost, abundance, and low ...with lithium through intermetallic LiAl formation which offers a ... See full document

... proposed to use urea as a carbon and nitrogen source to optimize the electrochemical properties of materials. The results showed that the presence of the N-doped carbon coating layer could form a three-dimensional ... See full document

... reported by Demourgues et al. [2]. It is confirmed that titanium oxyhydroxy-fluoride had the HTB structure without observed impurity. The atom mole ratio [F]/[Ti] is 1.2 which is confirmed by analyzing the results of ... See full document

... electrode materials are essential to meet the demanding requirements these ...shortened Li ? transport dis- tance, permitting batteries to operate at higher ...nanostructured materials, hollow ... See full document

... By pyrolysis of sisal fibers, a new microporous sisal fiber carbons (SFCs) were obtained [12, 13], and then the composites of sulfur/SFCs were prepared by simple hydrothermal method. As anode materials for ... See full document

... electrode materials is used in the ...The lithium sheet acts as the reference electrode and the counter electrode, the polypropylene microporous film Celgard 2032 as the separator, the prepared negative ... See full document