V2O5 electrode materials

The benefit of a hybrid phase for the intercalation-deintercalation of mobile species such as Li+ cations is well illustrated by the study of conductive polymers such as polyaniline or polypyrrole intercalated into a V2O5 framework as potential electrode materials in lithium batteries [34]. For PANI/V2O5, an oxidative post-treatment performed under an oxygen atmosphere allowed the authors to compare the conductivity attributed to the polymer, as in absence of reduced cations, there was no electronic hopping between ions, and the conductive state was due only to the... 

Among the transition metal oxides, mention should also be made of the vanadium oxides, the most studied as positive electrode materials being V2O5, V Oii, and LiV30g, which insert lithium in the potential domain of 3 V vs. Li/Li+. For the vanadium oxides, too, doping and suitable structure have been shown to improve their electrochemical performance, and recently a sol-gel process has yielded high-capacity (500-600 Ah kg ) materials delivering 500 Wh kg at 4 mA cm" [137]. 

Another transition metal oxide used as the electrode material in XO, sensors is Cr2O3 [275-281]. Other binary oxides used for XO,. sensors include ZnO [264], V2O5 [282], and SnO2 [278, 279], which has also been used for CO sensors [283]. Indium oxide (In2O3) has been used in a CO sensor and tested in engine exhaust gas [284]. Oxides used as electrodes in sensors for hydrocarbons include Ga2O3 [285],... 

Kuwabata, S., et al. 2000. Charge-discharge properties of chemically prepared composites of V2O5 and polypyrrole as positive electrode materials in rechargeable Li batteries. Electrochim... 

Performance testing of the electrodes can be seen in Table 4.3 [83]. V2O5 shows the highest specific capacitance but exhibits poor cycle life capacitance fades considerably after only a few hundred cycles. The high capacitance, better cycle stability, and potential as a positive electrode material for composites make manganese the emerging alternative to RUO2. 

V2O5 is a solid-state compound with many catalytic and electronic uses including an electrode material for rechargeable lithium batteries. Its structure [60] is... 

The main positive electrode materials for lithium-ion batteries, LiCo02, LiNi02, LiMn204, and LiFeP04, were discussed in Chapters 2 through 5. In this chapter, several other important positive electrode materials will be discussed, including Li-rich layered Mn oxides, phosphates, sulfates, silicates, borates, titanates, V2O5, and other oxides [1]. 

V2O5 would be an attractive positive electrode material since it can achieve a high energy density for lithium-ion batteries. Due to its layered structure, it... 

Pyrrolium- and piperidinium-based ILs can also be used in other battery systems and electrode materials such as the Li//S cell, silicon negative electrode, V2O5, and LiNiosMnj 5O4. 

This chapter provides the relationships between structural and electrochemical properties of lamellar compounds the 3d-transition metal oxides currently studied as for their potential use in LiBs. First, we examine briefly three binary layered oxides, M0O3, V2O5, and LiVsOg which were proposed as intercalation compounds since at the end of 1970s. Then, the ternary layered oxides are considered. Starting from the historical and prototype compound LiCo02, which is the dominant positive electrode material employed by all Li-ion cell manufacturers so far, we state the broad family of layered oxides such as LiM Oy and their derivatives the... 

Recently, it was reported by Pyun et al. thatthe CTs of transition metal oxides such as Lii 8CoO2 [14,77-79], l i,, AiO. [11,12], Li, sMii.O [17,80,81], Lij + 8[Ti5/3Lii/3]O4 [11, 28], V2O5 [11, 55] and carbonaceous materials [18, 82-84] hardly exhibit a typical trend of diffusion-controlled lithium transport - that is, Cottrell behavior. Rather, it was found that the current-potential relationship would hold Ohm s law during the CT experiments, and it was suggested that lithium transport at the interface of electrode and electrolyte was mainly limited by internal cell resistance, and not by lithium diffusion in the bulk electrode. This concept is referred to as cell-impedance-controlled lithium transport. 

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