| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve charge-discharge cycle performance without degrading the capacity per unit volume in a lithium secondary battery using a negative electrode having a negative electrode mixture layer formed on a surface of a negative electrode current collector, the mixture layer made of negative electrode active material particles of silicon and/or a silicon alloy and a binder by making the negative electrode mixture layer sufficiently adhere to the negative current collector. <P>SOLUTION: In the lithium secondary battery comprising a positive electrode 1, a negative electrode 2 and a nonaqueous electrolyte, the negative electrode has a negative electrode mixture layer made of negative electrode active material particles of silicon and/or a silicon alloy and a binder, the negative electrode mixture layer being formed on a surface of the negative current collector by sintering, and the negative electrode active material particles are partially embedded in the negative electrode current collector. <P>COPYRIGHT: (C)2007,JPO&INPIT |
