| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a positive electrode having a high energy density, an excellent heavy load characteristic, and an excellent low-temperature characteristic and safety and provide a non-aqueous electrolyte secondary battery using such a positive electrode. <P>SOLUTION: The positive electrode 3 includes positive electrode active material layers 15 and 16 located on the sides of a positive electrode current collector 13 and containing LiXMn<SB>2-</SB>YMYO<SB>4</SB>provided that the conditions 0.95≤x≤1.25 and 0.01≤y≤0.20 should be met (where M is one or more metals selected among Ti, Cr, Fe, Co, Ni, Zn, Al) and Li<SB>x</SB>Ni<SB>1-y</SB>M<SB>y</SB>O<SB>2</SB>provided that the conditions 0.95≤x≤1.25 and 0.01≤y≤0.40 should be met (where M is one or more metals selected among Ti, Cr, Fe, Co, Mn, Zn, Al, Mo, W), wherein the thickness T<SB>1</SB>of the positive electrode current collector 13 and the total (T<SB>2</SB>+T<SB>3</SB>) of the thicknesses of the positive electrode active material layers 15 and 16 should meet the conditions 2.5≤(T<SB>2</SB>+T<SB>3</SB>)/T<SB>1</SB>and (T<SB>2</SB>+T<SB>3</SB>)≤250 μm. <P>COPYRIGHT: (C)2004,JPO |
