| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a non-aqueous electrolyte lithium ion second battery which has excellent cycle characteristic and can exhibit a high output. <P>SOLUTION: The non-aqueous electrolyte lithium ion second battery 5 includes an anode 61 having a compound containing lithium, a cathode 62 containing a cathode active substance in which potential changes with the insertion and desorption of Li, and a non-aqueous electrolyte which is made by dissolving the electrolyte in an organic solvent. The anode 61 contains a compound represented by a general formula of Li<SB>x</SB>Ni<SB>1-y</SB>M<SB>y</SB>O<SB>2</SB>(wherein x is a value decreased by electric charge and increased by electric discharge as the anode active substance, 0≤y≤0.8, M is one type or more of metal element selected from the group composed of Co, Al, Mg and Mn). In the cathode 62, the cathode active substance in which the minimum value of the open circuit potential of the anode 61 and the cathode 62 when the anode active substance represented by the above general formula is in a range of x≤0.89 becomes 1.9 V or lower, is combined with the anode active substance, and used. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
