| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a carbon-semimetal oxide of which the theoretical capacity is large in comparison with graphite and which is used for a negative electrode active material for a lithium ion battery to show superior cycle characteristics, and provide a manufacturing method of the carbon-semimetal oxide and an electrode or the like using the composite material. <P>SOLUTION: The composite material used for the negative electrode active material for the lithium ion battery contains a carbon material with pores each having a pore diameter of 10 nm or less, and one or more kinds of semimetal oxides selected from the group composed of silicon monoxide, silicon dioxide, tin monoxide, and tin dioxide. The semimetal oxides exist in the pores of the carbon material. <P>COPYRIGHT: (C)2011,JPO&INPIT |
