| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithium secondary battery with a large capacity and an excellent cycle property. <P>SOLUTION: The lithium secondary battery comprises a cathode activator, an anode activator made by compounding graphite particles 2 and Si fine particles 3, and an electrolyte. The electrolyte contains a solvent and polyether-denatured silicon oil formed by bonding a polyether chain to a part excluding the end of a polysiloxane straight chain, in which a solute composed of a lithium salt is added. The anode activator necessarily contains an Si-phase and an SiM-phase, and the lithium secondary battery composed of multi-phase alloy powder containing at least either an X-phase or an SiX-phase is adopted, wherein, the element M is at least one or more kinds out of Ni, Co, As, B, Cr, Cu, Fe, Mg, Mn, and Y; the element X is at least one or more kinds out of Ag, Cu, and Au; Cu is not selected concurrently for M and X. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
