DESCRIPTION (COMPLETE) OCR NOT PREPARE
DUE TO PRINT PROBLEM

We Claim:
1. A method for regulating terminal voltage of a cathode for a lithium secondary battery when electric potential difference (voltage) between a cathode and an anode is OV during over discharge, which comprises forming a cathode by adding to a cathode active material containing a first lithium transition metal oxide as herein before described capable of lithium ion intercalation/deintercalation, a second lithium transition metal oxide as herein before described of which an irreversible capacity in the first charge/discharge cycle is greater than that of the first lithium transition metal oxide, as an additive.
2. The method as claimed in claim 1, wherein the additive is added to the extent of providing irreversibly lithium ions at least in such an amount as to compensate for an irreversible lithium-consuming reaction in an anode caused by the SEI film formation on the surface of an anode during the first charge.
3. The method as claimed in claim 1, wherein the additive is a lithium nickel oxide represented by the following formula 1, or a lithium nickel oxide represented by the following formula 1 that is surface-coated with an oxide other than lithium nickel oxides:
[Formula 1]
(Formula Removed)
wherein, x is a number satisfying -0.5