| 摘要 |
<p>To relate to an anode active material for a secondary battery of a silicon oxide-based composite material and having high battery capacity and excellent charging and discharging characteristics and cycle characteristics, and a method for producing the same, and an anode and a lithium ion battery using the same.
To form the silicon oxide-based composite material having new structure as directly obtained by pyrolyzing polysilsesquioxane having specific structure under an inert gas atmosphere, and the formed silicon oxide-based composite material having scattering recognized in a region: 0.02 Å -1 < q < 0.2 Å -1 in a spectrum measured by a small-angle X-ray scattering method, having graphite carbon in which scattering is recognized at 1,590 cm -1 (G band/graphite structure) and 1,325 cm -1 (D band/amorphous carbon), and a peak intensity ratio (I D /I G ratio) of amorphous carbon to crystalline carbon being in a range of 2.0 to 5.0 in a spectrum measured by Raman spectroscopy, and being represented by a general formula SiO x C y (0.5 < x < 1.8, 1 < y < 5). The silicon oxide-based composite material is used as the anode active material, the anode is formed of the anode active material, and the lithium-ion secondary battery is formed using the anode.</p> |
