Novel nanocomposite with organosilicon or organogermanium polymer preparation method thereof and anode active material for lithium secondary battery containing the same

摘要

The present invention relates to a novel nanocomposite with organosilicon or organogermanium polymer, a preparation method thereof, and an anode active material for a lithium secondary battery containing the same. A lithium secondary battery using a novel nanocomposite with organosilicon or organogermanium polymer of the present invention as an anode active material has seven times excellent capacity value and stable battery properties without large stress of a structure than an existing electrode of graphite materials; can maintain capacity without loss of Li sources; has excellent capacity recovery rate of returning to an initial capacity; and has excellent cycle lifespan, thereby being used by replacing an existing lithium secondary comprising an electrode of graphite materials.