首页>
外国专利>
- - MANUFACTURING METHOD OF CARBON NANOTUBE-METAL OXIDE COMPOSITE CARBON NANOTUBE-METAL OXIDE COMPOSITE ANODE FOR SECONDARY CELL INCLUDING THE COMPOSITE AND THE SECONDARY CELL INCLUDING THE ANODE
- - MANUFACTURING METHOD OF CARBON NANOTUBE-METAL OXIDE COMPOSITE CARBON NANOTUBE-METAL OXIDE COMPOSITE ANODE FOR SECONDARY CELL INCLUDING THE COMPOSITE AND THE SECONDARY CELL INCLUDING THE ANODE
The present invention relates to a preparation method of a carbon nanotube-metal oxide composite, the carbon nanotube-metal oxide composite, an anode for a lithium ion battery including the composite, and the lithium ion battery including the anode for the lithium ion battery. The preparation method of the present invention comprises the steps of: ozonizing a carbon nanotube dispersion; mixing the ozonized carbon nanotube dispersion with a metal oxide dispersion to form a mixed dispersion; ice templating the mixed dispersion to form a carbon nanotube web in which a metal oxide is disposed on the surface of carbon nanotubes; and heat-treating the carbon nanotube web to form a strong covalent bond and a chelating bond with the metal oxide. A secondary battery including the composite according to the present invention can prevent decomposition of compositions of composite anode materials and can improve rate of charge and discharge, cycle stability and ion storage capacity accordingly by enabling a three-dimensional porous carbon structure to store metal oxide particles very firmly during charging/discharging when the secondary battery is operated. Therefore, the present invention may provide a secondary battery which can be stably used although the secondary battery is used for a long time.
展开▼
