Studies on the effect of titanium addition on LiCoO2

Abstract

The lithiated transition metal oxide has been used as the cathode materials for lithium ion rechargeable batteries. Among the various cathode materials, LiCoO 2 has been widely used. There are lot of reports on the substituted LiCoO 2 replacing small amount of Cobalt with other transition and nontransitional metals. Here, we focus on to a tetravalent transition metal atom such as titanium, as an addition in LiCoO 2 and studied its performance. The titled cathode material was synthesized by solid-state reaction method. Thermogravimetric/differential thermal analysis, X-ray diffraction, X-ray fluorescence, scanning electron microscopy, and particle size analysis were carried out to assess the effect of addition of titanium on LiCoO 2 . Electrochemical studies were carried out by cyclic voltammetry and life cycle analyzer.

Promising vanadium oxide and hydroxide nanostructures: from energy storage to energy saving

“…Vanadium sources are known to be abundant in the crustal rock of earth, which causes the low-cost advantages over the conventional LIB cathode material, LiCoO 2 , due to the high cost of Co source now. 7 Unfortunately, the vanadium oxides in LIB application still greatly suffers from limited cyclability, due to the kinetic limitations for deep discharge that arises from the irreversible phase transitions. 8,9 In this case, the established nanostructures open up an important avenue in the advancement of LIB applications by bringing short diffusion distance during the lithium intercalation/deintercalation processes and to accommodate the volume variations occurring during cycling, giving the possibility of improving capacity retention.…”

Vanadium oxide nanowires for Li-ion batteries

“…The intercalation of Li ion into the V 2 O 5 interlayer space causes the formation of Li x V 2 O 5 phase, which would not change the original structural frameworks, and the intercalation process is still fully reversible, leading to the advantage of the Li-ion batteries with a high output voltage. 5 Vanadium sources are known to be abundant in the crustal rock of earth, causing the low cost, which is another advantage of vanadium oxides compared with LiCoO 2 with high price because of the relatively limited source of Co. 6 These advantages make vanadium oxides such as V 2 O 5 , VO 2 , hydrated vanadium oxides, silver vanadium oxides (SVO), LiV 3 O 8 , etc. receive much attention for application in Li-ion battery.…”