Cation-substituted spinel oxide and oxyfluoride cathodes for lithium ion batteries

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United States of America Patent

PATENT NO 8722246
SERIAL NO

12752779

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Abstract

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The present invention includes compositions and methods of making cation-substituted and fluorine-substituted spinel cathode compositions by firing a LiMn2−y−zLiyMzO4 oxide with NH4HF2 at low temperatures of between about 300 and 700° C. for 2 to 8 hours and a η of more than 0 and less than about 0.50, mixed two-phase compositions consisting of a spinel cathode and a layered oxide cathode, and coupling them with unmodified or surface modified graphite anodes in lithium ion cells.

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Patent Owner(s)

  • BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Choi, Wonchang Austin, US 5 63
Manthiram, Arumugam Austin, US 43 666

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