| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a positive electrode for a nonaqueous electrolyte secondary battery having high capacity and high safety in high temperature storage, and to provide the nonaqueous electrolyte secondary battery having the positive electrode. <P>SOLUTION: The positive electrode for the nonaqueous electrolyte secondary battery has a positive mix layer made of a positive mix containing a positive active material, a conductive auxiliary, and a binder, the positive mix contains a lithium transition metal composite oxide represented by general formula Li<SB>(1+δ)</SB>Mn<SB>x</SB>Ni<SB>y</SB>Co<SB>(1-x-y)</SB>O<SB>2</SB>(0≤δ≤0.05; 0.1<x≤0.5; 0.1<y≤0.5; and 0.6<x+y≤1.0), carbon material having a specific surface area of 50-1000 m<SP>2</SP>/g is contained as the conductive auxiliary, and the neutralization amount (A) obtained by neutralization titration of supernatant liquid obtained by immersing 2.5 g of the positive mix in 50 g of neutral water with a sulfuric acid solution having a concentration of 0.01 mol/l is 4.5 ml or less. The nonaqueous electrolyte secondary battery includes the positive electrode. <P>COPYRIGHT: (C)2007,JPO&INPIT |
