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Evaluation of Tavorite-Structured Cathode Materials for Lithium-Ion Batteries Using High-Throughput Computing

Mueller T, Hautier G, Jain A, Ceder G ...see all

Chem. Mater (2011)

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Abstract

Cathode materials with structure similar to the mineral tavorite have shown promise for use in lithium-ion batteries, but this class of materials is relatively unexplored. We use high-throughput density-functional-theory calculations to evaluate tavorite-structured oxyphosphates, $uorophosphates, oxysulfates, and $uorosulfates for use as cathode materials in lithium-ion batteries. For each material we consider the insertion of both one and two lithium ions per redox-active metal, calculating average voltages and stability relative to a database of nearly 100,000 previously calculated compounds. To evaluate lithium mobility, we calculate the activation energies for lithium di!usion through the known tavorite cathode materials LiVO(PO4), LiV(PO4)F, and LiFe(SO4)F. Our calculations indicate that tavorite-structured materials are capable of very high rates of one-dimensional lithium di!usion, and several tavorite-structured materials may be capable of reversibly inserting two lithium ions per redox-active metal.

Author-supplied keywords

  • cathode material
  • computational
  • density functional theory
  • high-throughput
  • lithium-ion battery
  • tavorite

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Authors

  • Tim Mueller

  • Geoffroy Hautier

  • Anubhav Jain

  • Gerbrand Ceder

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