Improved Capacity Retention for LiVO2 by Cr Substitution

Xiaohua Ma;Hautier, Geoffroy;Anubhav Jain,;Robert Doe;Gerbrand Ceder
(2013) Journal of the Electrochemical Society — Vol. 160, n° 2, p. A279-A284 (2013)

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Authors
  • Xiaohua Ma
    Author
  • Hautier, GeoffroyUCLouvain
    Author
  • Anubhav Jain,
    Author
  • Robert Doe
    Author
  • Gerbrand Ceder
    Author
Abstract
We present a layered Li-intercalation oxide that operates on the V3+/V4+ redox couple. The stabilization effect of adding a +3 element into the layered LiVO2 has been studied by first principles calculations. We identified Cr substitution into LiVO2 to be promising for stabilizing a layered material based on the V redox couple. Layered LiCrxV1-xO2 (x = 0.1, 0.2, 0.4, 0.5) has been synthesized and tested electrochemically. The improved capacity retention confirms that the structural stability of delithiated LiVO2 is improved by Cr doping.
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Xiaohua Ma, Hautier, G., Anubhav Jain, Robert Doe, & Gerbrand Ceder. (2013). Improved Capacity Retention for LiVO2 by Cr Substitution. Journal of the Electrochemical Society, 160(2), A279-A284. https://doi.org/10.1149/2.046302jes (Original work published 2013)