Fabrication and electrochemical performance of 0.6Li2MnO3-0.4Li(Ni1/3Co1/3Mn1/3)O2 microspheres by two-step spray-drying process.

ABSTRACT: 0.6Li2MnO3-0.4Li(Ni1/3Co1/3Mn1/3)O2 composite microspheres with dense structures are prepared by a two-step spray-drying process. Precursor powders with hollow and porous structures prepared by the spray-drying process are post-treated at a low temperature of 400 °C and then wet-milled to obtain a slurry with high stability. The slurry of the mixture of metal oxides is spray-dried to prepare precursor aggregate powders several microns in size. Post-treatment of these powders at high temperatures (>700 °C) produces 0.6Li2MnO3-0.4 Li(Ni1/3 Co1/3 Mn1/3)O2 composite microspheres with dense structures and high crystallinity. The mean size and geometric standard deviation of the composite microspheres post-treated at 900 °C are 4 μm and 1.38, respectively. Further, the initial charge capacities

SUBMITTER: Son MY 

PROVIDER: S-EPMC4148668 | biostudies-literature | 2014 Aug

REPOSITORIES: biostudies-literature