| 摘要 |
The present invention provides composite material in which Si and carbon are combined so as to form an unprecedented structure; method for fabricating the same; and negative electrode material for lithium-ion batteries ensuring high charge-discharge capacity and high cycle performance. By heating an aggregate of Si nanoparticles and using a source gas containing carbon, a carbon layer is formed on each of the Si particles. Walls 12 forming a space 13a containing Si particles 11 and a space 13b not containing Si particles 11 are constructed by this carbon layer. |
