LITHIUM INTERCALATION INTO THE COPPER, NICKEL OR MANGANESE VANADATES Me(VO3)2 - yH20

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Authors
  1. Andrukaitis, E.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
Divalent transition metal vanadates, containing, cobalt, nickel or manganese, were found to reversibly intercalate lithium. By a precipitation method, a hydrated divalent metal vanadate was formed, with stoichiometry Me(VO3)2-yH2O, where Me = Co, Ni or Mn. Composite electrodes of Co and Ni vanadates dried in the 100-300C range had initial energy densities in the range of 1.1 to 1.5 Wh/g of active cathode material, at average voltages from 1.3 to 1.8 V (versus Li). The specific capacity faded quickly for Co(VO3)2 (15 to 30%) over the first 10 cycles because of partial amorphization of the structure and then stabilized to fade < 1%/cycle. Capacity of the divalent transition metal vanadates was related to the transition metal ion present, with Co and Ni vanadates yielding the highest specific capacities for a transition metal vanadate electrode.
Keywords
Lithium intercalation
Report Number
DCIEM-98-P-27 — Research Paper; Reprint
Date of publication
01 Jan 1997
Number of Pages
4
Reprinted from
Journal of Power Sources, vol 68, 1997, p 652-655
DSTKIM No
98-01431
CANDIS No
508214
Format(s):
Hardcopy;Document Image stored on Optical Disk

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