Electrochemically active flame-made nanosized spinels: LiMn2O4, Li4Ti5O12 and LiFe5O8

Electrochemically active LiMn2O4, Li4Ti5O12, and LiFe5O8 particles with spinel structure (normal, mixed and mixed inverse) were made at production rates of 10-20gh-1 by flame spray pyrolysis (FSP), a scalable, one-step, dry process. These materials were characterized by X-ray diffraction and nitroge...

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Published inMaterials chemistry and physics Vol. 101; no. 2-3; pp. 372 - 378
Main Authors Ernst, F O, Kammler, H K, Roessler, A, Pratsinis, S E, Stark, W J, Ufheil, J, Novak, P
Format Journal Article
LanguageEnglish
Published 01.02.2007
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Summary:Electrochemically active LiMn2O4, Li4Ti5O12, and LiFe5O8 particles with spinel structure (normal, mixed and mixed inverse) were made at production rates of 10-20gh-1 by flame spray pyrolysis (FSP), a scalable, one-step, dry process. These materials were characterized by X-ray diffraction and nitrogen adsorption, and had a primary crystallite size in the range of 8-30nm and exhibited high temperature stability. Electrochemical properties, as measured by slow cyclic voltammetry, are reported for LiMn2O4 and Li4Ti5O12 as potential cathode and anode materials, respectively, in secondary lithium-ion batteries. LiFe5O8 nanoparticles were made also by FSP containing the electrochemically active beta-phase as shown by the corresponding cyclic voltammogram and specific charge-discharge spectra.
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ISSN:0254-0584
DOI:10.1016/j.matchemphys.2006.06.014