ANODE ACTIVE MATERIALS, ANODE ELECTRODE FOR SECONDARY BATTERY, SECONDARY BATTERY USING THE SAME AND MANUFACTURING METHOD THEREOF

摘要

The present invention relates to a negative active material for a secondary battery, a negative electrode for a secondary battery, a secondary battery using the same, and a manufacturing method of the negative electrode for the secondary battery, wherein the negative active material for the secondary battery has a long life and a high battery capacity and is inexpensive by using, as a main ingredient, graphite which has excellent stability and a long life and by using, as an additive, a six-component Si alloy which has a high battery capacity. The negative electrode for the secondary battery in the present invention includes a negative electrode collector, and a negative active material formed on at least one surface of the negative electrode collector. The negative active material comprises 70-90 wt% of graphite and 10-30 wt% of a six-component Si alloy, and the six-component Si alloy is composed of amorphous nanofiber.