Study of Mex(VO3)2 vanadates, (Me = Co, Ni, Mn, 1 < x < 2) for lithium rechargeable cells

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TypeArticle
Journal titleJournal of Power Sources
Volume81-82
Pages651655; # of pages: 5
SubjectLithium insertion; Transition metal oxides; Vanadate; Vanadium oxide
AbstractTransition metal vanadates, Mex(VO3)2.2H2O, where Me = Co, Ni and Mn and 1.0 < x < 2.0, were found to reversibly insert lithium. The efficiency of reversible insertion depended on both the transition metal present and the stoichiometric ratio of Me:V in the vanadate structure. The Ni and Co vanadates gave the highest specific capacities using lithium metal coin cells, with initial specific capacities above 0.7 A h/g (1.0 W h/g) when x is near 1.0. The operating voltage of these materials was in the range of 1.0 to 2.0 V. Lithium ion coin cells using LiCoO2 coupled with the vanadates, were also examined. These were found to deliver about 200 mA h/g, with average voltages of 2.5 to 2.0 V for values of x from 1.1 to 1.2.
Publication date
LanguageEnglish
AffiliationNRC Institute for Chemical Process and Environmental Technology (ICPET-ITPCE); National Research Council Canada
Peer reviewedYes
NRC number51875
51775
NPARC number13063725
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Record identifier4fb69661-8965-4e8d-8167-8e7ea35f9fd0
Record created2011-04-05
Record modified2016-05-09
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