TY - JOUR
T1 - Study of lithium insertion into electrochemically synthesized sodium-vanadium oxide
AU - Aurbach, Doron
AU - Markovsky, Boris
AU - Salitra, Gregory
AU - Cohen, Yair
AU - Shembel, Elena
AU - Apostolova, Raisa
AU - Nagirny, Victor
PY - 2001/7
Y1 - 2001/7
N2 - We report herein on the electroanalytical behavior of LixNayV2O5 electrodes that were synthesized electrochemically from aqueous solutions of vanadyl and sodium sulphates, followed by thermal annealing (300°C). The electrodes were comprised of monolithic layers deposited on a stainless steel plate. A capacity above 200 mAh/g could be obtained at relatively high rates (>C/3 h) and prolonged cycling (hundreds of charge-discharge cycles). As evident from FTIR and XPS measurements, the electrodes develop surface films due to interactions with CO2 in the air and solution species. Electroanalytical data obtained from slow scan rate cyclic voltammetry (SSCV), potentiostatic intermittent titration (PITT), and impedance spectroscopy (EIS) are discussed.
AB - We report herein on the electroanalytical behavior of LixNayV2O5 electrodes that were synthesized electrochemically from aqueous solutions of vanadyl and sodium sulphates, followed by thermal annealing (300°C). The electrodes were comprised of monolithic layers deposited on a stainless steel plate. A capacity above 200 mAh/g could be obtained at relatively high rates (>C/3 h) and prolonged cycling (hundreds of charge-discharge cycles). As evident from FTIR and XPS measurements, the electrodes develop surface films due to interactions with CO2 in the air and solution species. Electroanalytical data obtained from slow scan rate cyclic voltammetry (SSCV), potentiostatic intermittent titration (PITT), and impedance spectroscopy (EIS) are discussed.
KW - Electrochemical behavior
KW - Electrode surface chemistry
KW - Impedance spectroscopy
KW - Li-ion diffusion coefficient
KW - Rechargeable Li batteries
KW - Sodium-vanadium oxides
UR - http://www.scopus.com/inward/record.url?scp=0035396020&partnerID=8YFLogxK
U2 - 10.1016/s0378-7753(01)00518-3
DO - 10.1016/s0378-7753(01)00518-3
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SN - 0378-7753
VL - 97-98
SP - 486
EP - 490
JO - Journal of Power Sources
JF - Journal of Power Sources
T2 - 10th International Meeting on Lithium Batteries
Y2 - 28 May 2001 through 2 June 2001
ER -