Super-MIEC Anodes for High-Rate Lithium-Ion Batteries
A mixed ionic and electronic conductors (MIEC) material for a battery includes a combination of niobium (Nb), tungsten
(W), titanium (Ti), and/or oxygen (0) forming a super- MIEC material with an increased alkali ion metal diffusivity. In one example,
the MIEC material is a Nb-W-Ti-0 material with an anion-to-cation ratio ranging from about 2.33 to about 2.8 where the anion is 0
and the cation is Nb, W, and Ti. The MIEC material may be a coarse-grained material that includes particles consisting essentially of
Nb, W, Ti, and/or O and having a dimension of at least 0.1 μm. The MIEC material may have an open pore structure with pores having
a pore diameter from about 2.5 A to about 2.8 A. The MIEC material may also include carbon (C) that coats each particle. The MIEC
material may be incorporated into an anode or a cathode of a lithium-ion battery.
Researchers
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mixed ionic electrical conductors formed of niobium-based materials for batteries and methods of making same
United States of America | Pending
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