Electrochemically Active Nanoparticles Made by Flame Spray Pyrolysis

Authors: 
Ernst, F. O., ETH Zürich
Ufheil, J., Paul Scherrer Institute
Novak, P., Paul Scherrer Institute
Pratsinis, S. E., Swiss Federal Institute of Technology, Particle Technology Laboratory, ETH Zurich


Electroactive Co3O4, Mn3O4, LiMn2O4, Li4Ti5O12, and LiFe5O8 particles with spinel structure (normal, normal distorted, mixed, and mixed inverse) were made by flame spray pyrolysis at production rates of 10 to 20 g/h. These materials were characterized by X-ray diffraction and nitrogen adsorption and had a primary crystallite size in the range of 8 to 30 nm and exhibited high temperature stability. The electrochemical properties are reported exemplarily for LiMn2O4 and Li4Ti5O12 as potential cathode and anode material, respectively, in secondary lithium-ion batteries.