Current time in Korea 01:04 Nov 25 (Wed) Year 2020 KCS KCS Publications
KCS Publications
My Journal  Log In  Register
HOME > Search > Browsing(BKCS) > Archives

Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 31, Number 5
BKCSDE 31(5)
May 20, 2010 

Electrochemical Characteristics of Lithium Vanadium Oxide for Lithium Secondary Battery
Hyung Sun Kim*, Byung Won Cho
Lithium vanadium oxide, Anode material, Lithium battery
The pure crystalline Li1.1V0.9O2 powder has been prepared by a simple solid state reaction of Li2CO3 and V2O3 precursors under nitrogen gas containing 10 mol % hydrogen gas flow. The structure of Li1.1V0.9O2 powder was analyzed using Xray diffraction (XRD) and scanning electron microscope (SEM). The stoichiometric Li1.1V0.9O2 powder was used as anode active material for lithium secondary batteries. Its electrochemical properties were investigated by cyclic voltammetry and constant current methods using lithium foil electrode. The observed specific discharge capacity and charge capacity were 360 mAh/g and 260 mAh/g during the first cycle, respectively. In addition, the cyclic efficiency of this cell was 72.2% in the first cycle. The specific capacity of Li1.1V0.9O2 anode rapidly declines as the current rate increases and retains only 30 % of the capacity of 0.1C rate at 1C rate. The crystallinity of the Li1.1V0.9O2 anode decrease as discharge reaction proceeds. However, the relative intensity of main peaks was almost recovered when the cell was charged up to 1.5 V.
1267 - 1269
Full Text