| abstract |
An object of the present invention is to degrade battery characteristics by reacting a lithium-containing metal oxide having a spinel structure, which is an active material, with an electrolytic solution due to heat during reflow soldering. A half-width of 111 diffraction lines in X-ray diffraction measurement of a lithium-containing metal oxide having a spinel structure is 0.35 ° or less in 2θ as measured by CuKα1 ray, and a BET specific surface area is 10 m 2 / g or less. By setting the average particle diameter to 5 μm or more by a laser diffraction method, a high-capacity non-aqueous electrolyte secondary battery capable of reflow soldering can be manufactured. [Selection diagram] None |