Study of lithium insertion into electrochemically synthesized sodium-vanadium oxide

Doron Aurbach, Boris Markovsky, Gregory Salitra, Yair Cohen, Elena Shembel, Raisa Apostolova, Victor Nagirny

Research output: Contribution to journalConference articlepeer-review

9 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)486-490
Number of pages5
JournalJournal of Power Sources
Volume97-98
DOIs
StatePublished - Jul 2001
Event10th International Meeting on Lithium Batteries - Como, Italy
Duration: 28 May 20012 Jun 2001

Keywords

  • Electrochemical behavior
  • Electrode surface chemistry
  • Impedance spectroscopy
  • Li-ion diffusion coefficient
  • Rechargeable Li batteries
  • Sodium-vanadium oxides

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