A Kinetic Two‐Phase and Equilibrium Solid Solution in Spinel Li 4+   x  Ti 5 O 12 | Zendy

Wagemaker M. | Zendy; Simon D. R. | Zendy; Kelder E. M. | Zendy; Schoonman J. | Zendy; Ringpfeil C. | Zendy; Haake U. | Zendy; LützenkirchenHecht D. | Zendy; Frahm R. | Zendy; Mulder F. M. | Zendy

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A Kinetic Two‐Phase and Equilibrium Solid Solution in Spinel Li 4+ x Ti 5 O 12

Author(s) -

Wagemaker M.,

Simon D. R.,

Kelder E. M.,

Schoonman J.,

Ringpfeil C.,

Haake U.,

LützenkirchenHecht D.,

Frahm R.,

Mulder F. M.

Publication year - 2006

Publication title -

advanced materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.707

H-Index - 527

eISSN - 1521-4095

pISSN - 0935-9648

DOI - 10.1002/adma.200601636

Subject(s) - materials science , spinel , solid solution , phase (matter) , kinetic energy , thermodynamics , chemistry , analytical chemistry (journal) , metallurgy , quantum mechanics , physics , organic chemistry , chromatography

The zero strain Li 4+x Ti 5 O 12 material as a two‐phase system is, in contrast to common knowledge, unstable at room temperature (see figure), and it is fast Li insertion that leads to a kinetically induced effective two‐phase reaction. The solid‐solution‐induced disorder, resulting from the mixed 8a/16c occupation, is most likely responsible for the high rate capabilities in Li 4+ x Ti 5 O 12 .

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