Abstract:
The present invention relates to methods for manufacturing manganese oxide nanotubes/nanorods using an anodic aluminum oxide (AAO) template. In the inventive methods, the manganese oxide nanotubes/nanorods are manufactured in mild conditions using only a manganese oxide precursor and an anodic aluminum oxide template without using any solvent. The nanotubes/nanorods having uniform size can be easily obtained by adsorbing the manganese oxide precursor onto the surface of the anodic aluminum oxide template by a vacuum forming process using a vacuum filtration apparatus so as to maintain the shape of nanotubes/nanorods and drying the manganese oxide nanotubes. The manganese oxide nanotubes/nanorods made according to the inventive methods can be used as economic hydrogen reservoirs, the electrode of lithium secondary batteries, or the energy reservoirs of vehicles or other transport means.
Abstract:
Disclosed herein are a method of preparing Li-doped silica nanotubes using an anodic aluminum oxide (AAO) template, and a method of storing energy using the prepared Li-doped silica nanotubes. Unlike prior methods for preparing metal nanotubes, according to the disclosed preparation method, the Li-doped silica nanotubes having a uniform size can be easily obtained in mild conditions using a lithium precursor, a silica sol and an anodic aluminum oxide template. The preparation method comprises adsorbing the lithium precursor and the silica sol on the surface of the AAO template, drying the lithium precursor and the silica sol, adsorbed onto the AAO template, in a vacuum, to form nanotubes, and then drying the nanotubes. The Li-doped silica nanotubes prepared according to the disclosed method can be used as economical hydrogen storage materials, electrode materials for lithium secondary batteries, or energy storage sources for automobiles or other transportation means.
Abstract:
The present invention relates to methods for manufacturing manganese oxide nanotubes/nanorods using an anodic aluminum oxide (AAO) template. In the inventive methods, the manganese oxide nanotubes/nanorods are manufactured in mild conditions using only a manganese oxide precursor and an anodic aluminum oxide template without using any solvent. The nanotubes/nanorods having uniform size can be easily obtained by adsorbing the manganese oxide precursor onto the surface of the anodic aluminum oxide template by a vacuum forming process using a vacuum filtration apparatus so as to maintain the shape of nanotubes/nanorods and drying the manganese oxide nanotubes. The manganese oxide nanotubes/nanorods made according to the inventive methods can be used as economic hydrogen reservoirs, the electrode of lithium secondary batteries, or the energy reservoirs of vehicles or other transport means.
Abstract:
This invention relates to a negative active material for a lithium secondary battery, a method of preparing the same and a lithium secondary battery including the same. This negative active material exhibits high capacity and superior cycle-life characteristics and is thus usefully employed in a lithium secondary battery which shows high capacity during high-rate charge · discharge.