Synthesis and electrochemical properties of V2O5 nanostructures prepared via a precipitation process for lithium-ion battery cathodes

Electrochemical Behaviour of V2O5Xerogel and V2O5Xerogel/C Composite in an Aqueous LiNO3and Mg(NO3)2Solutions

“…2a and b. An analogous amorphous structure was evidenced by Wang et al [13] [18]. This stage of material we call xerogel, since such a term was already used elsewhere [13,19,20].…”

Graphene-modified nanostructured vanadium pentoxide hybrids with extraordinary electrochemical performance for Li-ion batteries

“…From the data, it is clear that the introduction of a small amount (that is, 2%) of graphene has a profound effect on the electrochemical performance of V 2 O 5 , and the V 2 O 5 -G shows the best electrochemical performance of any reported V 2 O 5 hybrids in the coin cell configuration, as summarized in Supplementary Table 2 (refs 5,7,[29][30][31][32][33][34][35][36][37][38][39][40][41][42][43]. However, all performance changes are rooted in the material structure.…”

Flame spray-pyrolyzed vanadium oxide nanoparticles for lithium battery cathodes

“…In the following anodic scanning, two broad peaks were observed at around 2.67 and 3.26 V vs. Li/Li + , respectively, corresponding to the lithium extraction processes. 24,25 Flame spray-pyrolyzed vanadium oxide nanoparticles for lithium battery... http://pubs.rsc.org/en/content/articlehtml/2009/cp/b821389p From Fig. 4b and c, it can be seen that the reversibility of the redox kinetics with cycling improves when the discharge cut-off potential is limited to 2.5 V vs. Li/Li + .…”

“…[21][22][23][24][25] These studies showed that crystalline V2O5 has a high specific charge but has poor cycle life behaviour since its crystal structure is damaged by prolonged charge/discharge cycles. Meanwhile, amorphous and low crystallinity V2O5 allows faster lithium-ion diffusion and displays superior cyclability.…”

“…Therefore, nanocrystalline V2O5 has a promise as alternative cathode material in lithium batteries. [24][25] Vanadia nanoparticles can be obtained by various physical and chemical techniques. Such powders have been prepared mostly by dry processes, such as vacuum evaporation, [26][27] and sputtering, 28 although wet processes such as electrodeposition 29 and sol-gel synthesis 30 seem to be more advantageous in producing nanoparticles-based thin films on a large scale.…”