Delithiation/lithiation behaviors of three polymorphs of LiVOPO4

LiVOPO4 is an attractive high-voltage cathode with rich polymorphs (α, β and αI). We present here a comparison of the behaviors of three LiVOPO4 polymorphs during delithiation/lithiation. Experimental and computational work suggests that α-LiVOPO4 suffers from more severe conductivity problems among...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2018, Vol.54 (94), p.13224-13227
Main Authors: He, Guang, Wang Hay Kan, Arumugam Manthiram
Format: Article
Language:English
Subjects:
High voltages
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Summary:LiVOPO4 is an attractive high-voltage cathode with rich polymorphs (α, β and αI). We present here a comparison of the behaviors of three LiVOPO4 polymorphs during delithiation/lithiation. Experimental and computational work suggests that α-LiVOPO4 suffers from more severe conductivity problems among the three forms. For the first time, our preliminary studies on lithiated β-Li2VOPO4 demonstrate that the orthorhombic structure of β-LiVOPO4 could be retained after lithiation, which is consistent with the finding for the other two forms.
ISSN:1359-7345
1364-548X
DOI:10.1039/c8cc07446a