A Kinetic Two-Phase and Equilibrium Solid Solution in Spinel Li4+xTi5O12

A Kinetic Two-Phase and Equilibrium Solid Solution in Spinel Li4+xTi5O12

The zero strain Li4+xTi5O12 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/16...

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Veröffentlicht in:Advanced materials (Weinheim) 2006-12, Vol.18 (23), p.3169-3173
Hauptverfasser: Wagemaker, M., Simon, D. R., Kelder, E. M., Schoonman, J., Ringpfeil, C., Haake, U., Lützenkirchen-Hecht, D., Frahm, R., Mulder, F. M.
Format: Artikel
Sprache:eng
Schlagworte:
Batteries
Lithium-ion batteries
Phase-change materials
Spinels
Thermoresponsive materials
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Zusammenfassung:The zero strain Li4+xTi5O12 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 Li4+xTi5O12.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200601636