| 摘要 |
The present invention provides a lithium secondary battery using, as a lithium ion occluding agent for a negative electrode, a substantially amorphous oxide powder in which a product V.d of a total volume V in cm3/g of pores with a diameter of 100 nm or less and a true density d in g/cm3 measured by a helium displacement method is 0.1 through 0.5. Thus, the lithium secondary battery can attain an excellent charge-discharge cycle characteristic.
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