STUDY OF LITHIUM INSERTION INTO MexV2O5 + x/2y Me = COPPER, IRON OR CHROMIUM

PDF

Authors
  1. Andrukaitis, E.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
Transition metal vanadates, containing copper, iron or chromium, with the stoichiometry MexV2O5 + x/2, where Me = Cu, Fe and/or Cr, and a monoclinic-brannerite structure were formed by thermal decomposition above 550C of hydrated metal vanadates (Me(VO3)2.2H2O). Intercalation of lithium into composite electrodes containing a 85:10:5 mixture of MexV2O5 + x/2, graphite and PTFE gave initial specific capacities in the range of 0.4 to 0.7 Ah/g to 1.0 V vs. Li (0.7 to 1.3 Wh/g). The specific capacity fade over the first few cycles was largely caused by structural changes taking place in the MexV2O5 + x/2 structure. The capacity and reversibility of transition metal vanadates was related to the transition metal ion present in the order Cu>Cr>Fe. They had reasonable reversibility towards Li intercalation with higher capacities compared to vanadium based oxides studied in the past.
Keywords
Lithium intercalation
Report Number
DCIEM-98-P-28 — Research Paper; Reprint
Date of publication
01 Jan 1997
Number of Pages
4
Reprinted from
Journal of Power Sources, vol 68, 1997, p 656-659
DSTKIM No
98-01432
CANDIS No
508215
Format(s):
Hardcopy;Document Image stored on Optical Disk

Permanent link

Document 1 of 1

Date modified: