REVERSIBLE LITHIUM INTERCALATION IN ALKALI METAL VANADIUM BRONZES (MX V6O13 + DELTA, WHERE M = K, Rb OR Cs)

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Authors
  1. Andrukaitis, E.
Corporate Authors
Chief of Research and Development, Ottawa ONT (CAN) Director Research and Development Air
Abstract
Thermal treatment of electrochemically prepared crystalline solid solutions of ammonium hexavanadates containing K, Rb or Cs formed adherent electrodes on a conducting substrate without the need for binders. These Mx V6O13 + delta bronzes where M = K, Rb or Cs belong to the ternary system V2O4-V2O5-M2O. By controlling the electrodeposition/decomposition processes, various alkali metal to vanadium ratios (0.0 to 0.65) and oxygen to vanadium ratios (2.2 to2.5) were studied. The RbV6O13 + delta bronzes have not been studied, they are reversible to lithium insertion. For maximum capacity, only small amounts of the alkali metal could be present. Voltage plateaus for small M/V ratio bronzes were similar to V2O5 for electrodes made by thermal decomposition in air, and to V6O13 when heated under a vacuum atmosphere.
Keywords
Thermal decomposition;Lithium intercalation
Date of publication
01 Dec 1995
Number of Pages
7
Reprinted from
Journal of Power Sources, vol 54, 1995, p 470-474
DSTKIM No
96-02908
CANDIS No
180665
Format(s):
Document Image stored on Optical Disk;Hardcopy

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